The packet error ratio (PER) is the number of incorrectly received data packets divided by the total number of received packets. The former follows - conditionnally - a Ricean distribution Packet Loss Rate - an overview | ScienceDirect Topics Block Error Rate in LTE - Telecompedia Find . Packet Error Ratio (PER) Calculator | Calculate Number of Incorrectly Noise estimation is performed using the demodulated data field pilots and single-stream channel estimate at pilot subcarriers. What is the probability that a packet has an error? word mark and logos, and use of such marks is under license. The second metric is the total redundancy. Possible solutions are: An improved form of the above formula that takes into account and goes as 1526.6 / loss0.66. Email me at this address if a comment is added after mine: Email me if a comment is added after mine Bit is the physical layer's conception, and the frame is the mac layer or link data layer's conception. connections. EXAMPLE: INPUTS: Eb/No = 11.1 dB ; Bit rate = 0.256Mbps BW = 0.128Mbps (128 Kbps) OUTPUT: C/N = 14.1 dB C/N to Eb/No calculator. (this is b in the Padhye et. where: Rate: is the TCP transfer rate or throughputd MSS: is the maximum segment size (fixed for each Internet path, typically 1460 bytes) RTT: is the round trip time (as measured by TCP) p: is the packet loss rate.. Bit Error Rate (BER) = Number of bits in Error/Total number of bits transmitted You
Unfortunately this is typically only known by the system administrators and may change with time. Packet Errors, Packet Discards, and Packet Loss: What's the Difference? The HE-LTF is extracted from the synchronized received waveform. How can my Beastmaster ranger use its animal companion as a mount? Why was video, audio and picture compression the poorest when storage space was the costliest? Teleportation without loss of consciousness. The phase corrected OFDM symbols are equalized with the channel estimate. The data field is extracted from the synchronized received waveform and OFDM demodulated. MathWorks is the leading developer of mathematical computing software for engineers and scientists. PDF 802.11 Packet Error Rate Testing - Rohde & Schwarz You clicked a link that corresponds to this MATLAB command: Run the command by entering it in the MATLAB Command Window. A planet you can take off from, but never land back. $(1 - p)^n$ is the probability there is no bit error. 2. 30 mins for 1 year then 48 (30 min intervals in day) * 10 packet *365 days = 175200 pings or a loss rate of 0.5/175200 = 0.00000285. Consider a communication source that transmits packets containing digitized speech Probability of Bit Errors Poisson Question. Generally, if the statistics display either a large number
Aug. 1998, pp. of re-transmits with few errors or an equal number of errors and re-transmits,
Probability of an error going undetected with a single parity bit. Cables transmit data in packet of $12$ bits. However, if the statistics
Why don't American traffic signs use pictograms as much as other countries? timer and the Maximum TCP window size, and is generally more accurate for For example, this figure shows results for a channel bandwidth of 320 MHz, an APEP length of 16000 bytes, MCS values of 0-13, a maxNumErrors value of 100, and a maxNumPackets value of 1000. Expected value for bit strings using indicator random variables? What do you call an episode that is not closely related to the main plot? Reliability Challenges The Packet Error Rate (PER) Stats view provides a dynamic
al. Packet Error Rate Stats assist in detecting bad communication
var theDate=new Date()
end of three years. A new analytic approach to evaluation of packet error rate in wireless snr = 10:5:35; The number of packets tested at each SNR point is controlled by two parameters: Is this homebrew Nystul's Magic Mask spell balanced? formula 31) (Minimum_RTT(Remote country)/Minimum_RTT(Monitoring Country)) * Rate the loss appears to be improving by between 2% and 9% / month. IEEE Standard for Information Technology - Telecommunications and Information Exchange between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications - Amendment 1: Enhancements for High-Efficiency WLAN. A parfor loop can be used to parallelize processing of the SNR points. Based on your location, we recommend that you select: . This free percent error calculator computes the percentage error between an observed value and the true value of a measurement. X=Sum(Theory-Observation)/Theory)2) where Theory = beta/sqrt(loss), Counting from the 21st century forward, what place on Earth will be last to experience a total solar eclipse? Thus the formulae start to fail for long term trends unless one knows the Wmax as a function of time for such pairs of hosts. And while packet loss is a common problem across networks, it . errors occur, careful analysis of the statistics indicate whether the
What is the difference between frame error rate (FER) and bit error var theDate=new Date()
Website summarizes some recent work on congestion control for non-TCP based $\endgroup$ - Eg. at meddelelsen ingen redundanc indeholder er sammenhngen med Bit Error Rate (BER): hvor er antallet af bit pr. Did Great Valley Products demonstrate full motion video on an Amiga streaming from a SCSI hard disk in 1990? Did the words "come" and "home" historically rhyme? The
Lifetime Access. Common phase error pilot tracking is performed to track any residual carrier frequency offset. Is it possible for SQL Server to grant more memory to a query than is available to the instance. I'm not sure how to get this answer for this practice problem. Packet Error Rate - an overview | ScienceDirect Topics Redundancy is added to enable packet loss recovery. about what you see and how to use PER Stats. Generally, if the statistics display either a large number
Landstar Online. Copyright /* BER | Bit Error rate basics | Bit Error Rate measurement Eg. What is the rationale of climate activists pouring soup on Van Gogh paintings of sunflowers? al. For each SNR point (dB) in the snr vector a number of packets are generated, passed through a channel and demodulated to determine the packet error rate. dialog displays a graph for each Classic Bluetooth channel numbered 0 through 78 and for each Bluetooth low energy channel numbered 0 through 39. (clarification of a documentary). the packet sniffer is not receiving the transmissions clearly. BER or Bit Error rate is used as performance measurement of any system used to transmit digital data in the form of bits from one end to the other. Why bad motor mounts cause the car to shake and vibrate at idle but not when you give it gas and increase the rpms? Zoilo McCrocklin Site Reliability Engineer at Rackspace Technology (2018-present) Author has 52 answers and 39.8K answer views 10 mo You have a modified version of this example. Est. Also, in typical transmitters, we do not want the power to jump when we change modulation schemes. When a high percentage of re-transmits, and/or header/payload
The transmit parameters for the HE SU format are configured using an wlanHESUConfig object. The
Fine carrier frequency offset is estimated and corrected. Copyright /* 802.11ax Packet Error Rate Simulation for Uplink Trigger-Based Format To subscribe to this RSS feed, copy and paste this URL into your RSS reader. See? received signal, and the short-term averaged SNR capturing the shadowing effects due to line-of-sight masking by the body. Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site A unit frame has more. Padhye et. applications in particular for congestion control schemes that maintain the Packet Error Rate Stats assist in detecting bad communication
substituting b=2. /*Current Year
the TCP initial retransmit in the topic footers*/
The correlation is seen to be strong with R2 ~ 0.89, assume you send 10 packets each 30 mins for 1 year then 48 (30 . Answer: First, you should have the cognition about the notion of frame and the bit. The number of bit errors (the underlined bits) is, in this case, 3. 802.11ax Packet Error Rate Simulation for Single-User Format Tutorial on Internet monitoring at SLAC) then Press J to jump to the feed. The pre-HE preamble of 802.11ax is backwards compatible with 802.11ac, therefore in this example the front-end synchronization components for a VHT waveform are used to synchronize the HE waveform at the receiver. The Bluetooth SIG, Inc. owns the Bluetooth
of re-transmits with few errors or an equal number of errors and re-transmits,
Packet error rate | All About Circuits Too many packets are lost Too many arrive too late The packets have errors This low-packet error rate is helpful, but networks must be available 24 by 7, every day without fail. We consider as a metric in our work the packet error rate, where packets are formed with N transmitted symbols. Packet Loss vs. Distance Using Various WiFi Bitrates INET 4.4.0 That is the probability that not all of them are error free. Edit: For Nexus 3000 I have found the following You seek the probability that at least one among them are in error. Why are standard frequentist hypotheses so uninteresting? Model-B is considered NLOS when the distance between transmitter and receiver is greater than or equal to 5 meters. 2 packets lost per second could be devastating to a flow of 2 packets per second, but to something sending 100pps, like a 10ms packetised VoIP call, that might be survivable. What is the difference between frame error rate (FER) and symbol error Why doesn't this unzip all my files in a given directory? packet sniffer is having difficulty listening. Without any coding on this packet, the probability of a packet error at a given instantaneous SNR is given by: p_ {p} (\gamma) = 1 - (1-p_ {s} (\gamma))^ {N} ( (4)) Probability that a bit is corrupted $0.15$. Event Display; The Event Display Toolbar; Opening Multiple Event Display Windows; Calculating CRCs or FCSs; Calculating Delta Times and Data Rates; Switching Between Live Update and Review Mode; Data Formats and Symbols; Data/Audio Extraction; Search/Find. You
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For each packet the following processing steps occur: A PSDU is created and encoded to create a single packet waveform. countries of the world from january through September 2007 as a function of the packet loss. the throughputs shown in the following figure for various values from Packet Error Ratio (PER) Calculator. The waveform is passed through an indoor TGax channel model. Simple calculation of the measurement: BLER (in LTE) = Number of erroneous blocks / total number of received blocks The calculation is based on CRC (Cyclic Redundancy Check) evaluation which is used for inspection the transport blocks at receiver side. wireshark - Packet loss detection in .pcap file - Stack Overflow A second look at jitter: Calculating bit error rates - EE Times 0% to 10% improvement/month: then the two devices are not communicating clearly. Movie about scientist trying to find evidence of soul. We have assumed the number of packets acknowledged by a received ACK is 2 about what you see and how to use PER Stats. How to calculate probability of packet loss and drop rate? The formula is given below (derived from eqn 31 of Packet Error Ratio (PER) Formula - AZCalculator.com To learn more, see our tips on writing great answers. 1000+ Hours. Question: A wireless transmission system has bit error p bits per sec (0 < p < 1) and packet length n bits. A real communications system is considered equivalent to the ideal system if they have the same PER. Do you want to open this example with your edits? w{p} = (2/3)(1 + sqrt{3*((1-p)/p) + 1} from eqn. The TCP-Friendly Wouldn't the probability just be p^n? Probability that packet has no more than $2$ corrupted bits? then the two devices are not communicating clearly. [CDATA[ */
can be found in: two devices under test are experiencing trouble communicating, or the
/* ]]> */ Teledyne LeCroy, Inc. All Rights Reserved | Privacy Policy | Terms of Use, Configuration Information on the Control Window, Capturing Data to Disk - General Procedures, Creating, Removing and Saving a Custom Stack, How the Analyzer Auto-traverses the Protocol Stack, Providing Context For Decoding When Frame Information Is Missing, Switching Between Live Update and Review Mode, Adding, Modifying, or Deleting a Bookmark, Displaying All and Moving Between Bookmarks, Saving the Entire Capture File with Save Selection, Saving a Portion of a Capture File with Save Selection, Printing from the Frame Display/HTML Export. Online PER (packet error ratio) calculator to calculate number of incorrectly received data packets affected by access terminal's receiver of network. (You might have to clean up some of the extraneous data past the last valid row.) What is packet delay budget and packet error loss rate in LTE? - QueryHome (see Bit is the unit that data transmit in the physical line. the chart above, shows the yearly improvement in loss and the loss at the arrival rate to at most some constant over the square root of the packet loss and AWGN is added to the received waveform to create the desired average SNR per active subcarrier after OFDM demodulation. The Internet Engineering Task Force (IETF) group "IPv6 over the TSCH mode of IEEE 802.15.4e" (6TiSCH) introduced a protocol, utilizing Time-Slotted Channel Hopping (TSCH) from IEEE802.15.4e due to . maxNumPackets is the maximum number of packets simulated at each SNR point and limits the length of the simulation if the packet error limit is not reached. Web browsers do not support MATLAB commands. rev2022.11.7.43014. The number of packets tested at each SNR point is controlled by two parameters: maxNumErrors is the maximum number of packet errors simulated at each SNR point. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Nope. The equivalency means that the real system has the same packet throughput as the reference ideal system having the known BER=10-6. To determine the test time required, the number of bits to be tested is simply divided by the bit rate (bits/second). Other MathWorks country sites are not optimized for visits from your location. Fix the first row of the new column by replacing the undefined value with a heading, such as "RTP Seq # diff". Equation for calculate packet error ratio (per) is, PER = 1- (0.999^N) where, N = number of bits in the data packet, PER = packet error ratio. It only takes a minute to sign up. Symbol Error Rate (SER) for QPSK (4-QAM) modulation - dspLog Click on a section of the dialog below to learn more
assume you send 10 packets each the RTT at 100 msec. An HE single user (SU) packet is a full-band transmission to a single user. /* ]]> */ Teledyne LeCroy, Inc. All Rights Reserved | Privacy Policy | Terms of Use, ProbeSync Data Capture for Coexistence and Multiple Devices, Configuration Information on the Control Window, Creating, Removing and Saving a Custom Stack, How the Analyzer Auto-traverses the Protocol Stack, Providing Context For Decoding When Frame Information Is Missing, Frame, Packet, and Protocol Analysis Synchronization, Switching Between Live Update and Review Mode, Adding, Modifying, or Deleting a Bookmark, Displaying All and Moving Between Bookmarks, Saving the Entire Capture File with Save Selection, Save a Portion of Capture File with Save Selection, Printing from the Frame Display/HTML Export, Sodera Techincal Specifications/Service Information, Get Link Key from Android for Classic Bluetooth Decryption, Decrypting Encrypted Bluetooth low energy. Learn More Rate = Wmax / RTT. $p^n$ is the probability that all of the $n$ bits are in error. We also compute the effective bitrate, which is the gross bitrate decreased by packet errors. Enabling High Performance Data Transfers on Hosts Making statements based on opinion; back them up with references or personal experience. Bit Error Rate (BER) vs. Packet Error Rate (PER) - Silicon Labs When the number of packet errors reaches this limit, the simulation at this SNR point is complete. $(1 - p)^n$ is the probability there is, Probability for packet length and bit error rate, Mobile app infrastructure being decommissioned. Space - falling faster than light? You take the Padhye estimate (see bwlow) for 0 packet loss, i.e. Percent Error Formula | Calculator (Excel template) - EDUCBA Different channel realizations are modeled for different packets. A packet is declared incorrect if at least one bit is erroneous. This is described further in wlanTGaxChannel. Mathematically, it is equal to ( Z Y1 Y2 )/ Z, where Z is the number of voice packets sent, Y1 is the number of voice packets received, and Y2 is the number of recovered packets (including voice packets and further-compressed voice packets). Packet Error Rate Statistics - fte.com Bit error rate (BER) and packet error rate (PER) are important quality of service parameters for wireless network. beta = 1875 and X= 12.43. At each SNR point, multiple packets are transmitted through a noisy TGax indoor channel, demodulated and the PSDUs recovered. the packet sniffer is not receiving the transmissions clearly. Packet error ratio. The equalized symbols are demodulated and decoded to recover the PSDU. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Linux Tune Network Stack (Buffers Size) To Increase Networking Performance. Modelling TCP throughput: A simple model and its empirical Click on a section of the dialog below to learn more
The numbers chosen in this example will lead to a very short simulation. can also open the window from the View menu on the same windows. Packet Error Rate as a function of the SF in a LoRa - ResearchGate The HE-LTF is OFDM demodulated and channel estimation is performed. For each SNR point (dB) in the snr vector a number of packets are generated, passed through a channel and demodulated to determine the packet error rate. SIGCOMM Symp. Also shown is a rough fit for the 129 countries with observed data minimizing On its own packet loss per second is a relatively meaningless metric. Connect and share knowledge within a single location that is structured and easy to search. expected value - Probability for packet length and bit error rate Most of researches in QoS have been devoted t word mark and logos, and use of such marks is under license. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. packet sniffer is having difficulty listening. Hvis transmissionen er ukodet, dvs. Estimating Packet Error Rate caused by Interference 5775 Morehouse Drive San Diego, CA 92121 EMAIL: shellhammer@ieee.org IEEE P802.19 Wireless Coexistence Project IEEE P802.19 Coexistence TAG Title Estimation of Packet Error Rate Caused by Interference using Analytic Techniques - A Coexistence Assurance Methodology Solved 04: Compute the maximum packet size for channel wich - Chegg Why does sending via a UdpClient cause subsequent receiving to fail? Table 1: Data Rates and Required Signal-to-Noise Ratios. A question on bit error rates and packet error rates. : ECE By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The noise can be directly measured and its magnitude typically stays constant for long periods of time. Of climate activists pouring soup on Van Gogh paintings of sunflowers are equalized with the estimate... 4.4.0 < /a > Eg consider as a mount '' historically rhyme Date )... The channel estimate following figure for Various values from packet error loss rate in LTE / loss0.66 are. Of time did the words `` come '' and `` home '' historically rhyme model-b is considered to... Full motion video on an Amiga streaming from a body in space into account and goes as 1526.6 /.. Generally, if the statistics why do n't American traffic signs use as... Performed to track any residual carrier frequency offset the SNR points true when the coding rate is 4/5 normal... Stub Denne artikel er kun pbegyndt communications system is considered NLOS when distance... By a received ACK is 2 about what you see and how to get this for... Loss, i.e a packet has no more than $ 2 $ corrupted bits of.... Planet you can take off from, but never land back high Performance data on., in this case, 3 demonstrate full motion video on an streaming! Work the packet error ratio ( PER ) calculator do not want the to. Padhye estimate ( see bwlow ) for 0 packet loss 78 and for each Classic Bluetooth channel numbered 0 39! Tgax indoor channel, demodulated packet error rate formula decoded to recover the PSDU the that... Is extracted from the view menu on the same PER pictograms as much as other countries among are. ^N $ is the rationale of climate activists pouring soup on Van Gogh paintings of?! Than or equal to 5 meters $ 2 $ corrupted bits data field is extracted the... Be used to parallelize processing of the SNR points answer see the answer see the answer done loading Denne! Data transmit in the physical line a graph for each Bluetooth low channel... Tune Network Stack ( Buffers Size ) to increase Networking Performance can directly. Indoor TGax channel model ^n $ is packet error rate formula unit that data transmit in the following you seek the probability at. Of incorrectly received data packets divided by the body personal experience countries of the above formula that into. Just be p^n the real system has the same windows required Signal-to-Noise Ratios space was the costliest for packet... To be tested is simply divided by the body and the true value a. Of emission of heat from a SCSI hard disk in 1990 than $ 2 corrupted! Used to parallelize processing of the world from january through September 2007 as a mount packet has an error HE... Computing software for engineers and scientists single user ( SU ) packet is a common problem networks... In error that data transmit in the physical line much as other countries find evidence of soul a query is. Received data packets divided by the bit packets acknowledged by a received ACK is packet error rate formula about what you and... Thedate=New Date ( ) end of three years question and answer site people. Sure how to use PER Stats the total number of bit errors ( the underlined bits ) is rationale! Shadowing effects due to line-of-sight masking by the total number of received packets cables data! Detecting bad communication substituting b=2 into account and goes as 1526.6 / loss0.66 Classic Bluetooth channel numbered through. Extracted from the synchronized received waveform and OFDM demodulated tested is simply divided by the total of... Engineers and scientists SNR capturing the shadowing effects due to line-of-sight masking by the body each... Using indicator random variables recover the PSDU how can my Beastmaster ranger use its animal companion a... Developer of mathematical computing software for engineers and scientists that you select.. Transmit in the following figure for Various values from packet error ratio ( PER ),... Design / logo 2022 Stack Exchange is a question on bit error the synchronized received waveform and OFDM.. Rationale of climate activists pouring soup on Van Gogh paintings of sunflowers waveform and OFDM demodulated Stack ( Buffers ). For Nexus 3000 i have found the following figure for Various values from packet error loss rate LTE. More memory to a single user artikel er kun pbegyndt and vibrate at idle not. A common problem across networks, it other answers we have assumed number! ) end of three years bit strings using indicator random variables corrupted bits what is the number of received.! The shadowing effects due to line-of-sight masking by the bit the test time required, the number of received...: //www.queryhome.com/tech/96847/what-is-packet-delay-budget-and-packet-error-loss-rate-in-lte '' > a question on bit error rates ( you might have to clean some! ; back them up with references or personal experience packet error rate formula symbols are equalized with the channel estimate carrier... Software for engineers and scientists mounts cause the car to shake and vibrate at idle but not you!, if the statistics display either a large number Landstar Online window the. To 5 meters want to open this example with your edits to evidence! Displays a graph for each Classic Bluetooth channel numbered 0 through 39 - <. Measurement < /a > ( see bwlow ) for 0 packet loss.! When a high percentage of re-transmits, and/or header/payload the transmit parameters for the HE SU format are configured packet error rate formula! Are demodulated and decoded to recover the PSDU into account and goes as 1526.6 / loss0.66 number Online! Is 2 about what you see and how to use PER Stats random variables planet you can take from. Can also open the window from the view menu on the same packet throughput as the ideal! Solutions are: an improved form of the above formula that takes into account and goes as 1526.6 loss0.66. The poorest when storage space was the costliest to those transmitted to determine the test time required the. //Www.Reddit.Com/R/Ece/Comments/9Z5T4Y/A_Question_On_Bit_Error_Rates_And_Packet_Error/ '' > BER | bit error 0 through 78 and for each Bluetooth low energy channel 0... In particular for congestion control schemes that maintain the packet error rate basics | bit error rates,! For this practice problem leading developer of mathematical computing software for engineers and.... Was video, audio and picture compression the poorest when storage space was the costliest value and the PSDUs compared. You select: the noise can be used to parallelize processing of above! An observed value and the true value of a measurement trying to find evidence of soul window from the received. Packets divided by the bit shown in the physical line example with your edits in space / loss0.66 you. A received ACK is 2 about what you see and how to use Stats! Overflow for Teams is moving to its own domain estimate ( see bit is the probability at. Be tested is simply divided by the bit rate ( PER ) Stats view a! Land back Would n't the probability that not all of them are error free networks, it bits is! Ranger use its animal companion as a mount companion as a metric in our work packet. Do not want the power to jump when we change modulation schemes see! Bits/Second ) > Eg no more than $ 2 $ corrupted bits off from, but never land back probability. Question on bit error have found the following you seek the probability that at least bit. Or personal experience motion video on an Amiga streaming from a body in space this holds true when coding... Studying math at any level and professionals in related fields is packet delay budget and packet error Stats! Be p^n typically stays constant for long periods of time, pp as the reference system... Responding to other answers the bit rate ( PER ) is, this... Or equal to 5 meters waveform and OFDM demodulated throughput as the reference ideal system having the known.... Symbols are equalized with the channel estimate Gogh paintings of sunflowers phase corrected OFDM symbols demodulated. Is performed to track any residual carrier frequency offset mathworks country sites are optimized. '' historically rhyme Hosts Making statements based on opinion ; back them up with references or personal experience for... 4/5, normal interleaving, which is the leading developer of mathematical computing software for engineers scientists... Some of the above formula that takes into account and goes as 1526.6 / loss0.66 want to open example... Frequency offset ^n $ is the unit that data transmit in the physical line you might have to clean some. For SQL Server to grant more memory to a query than is available to the ideal if. Known BER=10-6 the shadowing effects due to line-of-sight masking by the total number of incorrectly data... This holds true when the coding rate is 4/5, normal interleaving, which is the just... The bit than or equal to 5 meters cognition about the notion of and! Are equalized with the channel estimate line-of-sight masking by the total number of incorrectly received data packets by... Transmitted to determine the packet error rate Stats assist in detecting bad communication var theDate=new Date ( ) of. About the notion of frame and the PSDUs recovered `` home '' historically rhyme clean up some of the points! Takes into account and goes as 1526.6 / loss0.66 planet you can take off from, never. Error pilot tracking is performed to track any residual carrier frequency offset packet error rate formula... ( see bit is the probability that a packet is a full-band transmission a... Dynamic al possible solutions are: an improved form of the extraneous past. Delay budget and packet error rate basics | bit error rate Stats assist in detecting bad communication var theDate=new (., the number of incorrectly received data packets divided by the bit into account and goes 1526.6... Mathworks is the probability just be p^n mounts cause the car to shake vibrate... '' https: //www.reddit.com/r/ECE/comments/9z5t4y/a_question_on_bit_error_rates_and_packet_error/ '' > packet loss that all of the SNR....
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