Performance Analysis of Outer Reed Solomon Coding Scheme IEEE 802.11-19/0364r0
Explore the performance analysis of the Outer Reed Solomon coding scheme for IEEE 802.11-19/0364r0, focusing on metrics like PER, throughput, Eb/N0, SNR, MCS, and channels. The study delves into coding rates, AWGN, LoS, NLoS scenarios, and the impact on various modulation schemes such as BPSK, QPSK, 16-QAM, and 64-QAM. Findings emphasize the importance of selecting the right performance metrics to evaluate novel schemes effectively.
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Mar 2019 doc.: IEEE 802.11-19/0364r0 Performance Analysis of Outer RS Coding Scheme Date: 2019-03-12 Authors: Name Stephan Sand, Paul Unterhuber, Mohammad Soliman, Martin Schmidhammer, Fabian de Ponte-M ller Affiliations German Aerospace Center (DLR) Address M nchener Stra e 20, 82234 We ling, Germany Phone 0049-8153-28-1464 0049-8153-28-2291 0049-8153-28-1990 0049-8153-28-1539 0049-8153-28-2882 email stephan.sand@dlr.de, paul.unterhuber@dlr.de, mohammad.soliman@dlr.de, martin.schmidhammer@dlr.de, fabian.pontemueller@dlr.de Submission Slide 1 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Abstract Outer Reed Solomon (RS) Code was proposed in [1] and further analyzed in [2]. The following results are based on simulator [2] analyzing the influence of different performance metrics, MCS, and channels: PER/Throughput vs. Eb/N0 or SNR: BPSK/QPSK/16-QAM/64-QAM and different coding rates AWGN, highway LoS and NLoS Results show that carful selection of performance metric needed to evaluate performance gains of novel schemes. Submission Slide 2 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Introduction Outer Reed Solomon (RS) code proposed in [1]: Fig. 1 Reed Solomon outer coding (taken from [1]) Submission Slide 3 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Definitions ?? ?? Signal-to-noise-ratio ??? = Energy-per-bit-to-noise-ratio ?? ??=? ?? ?? ? ??????? ?????????? with spectral efficency ?= number of bits per packet ?? ?????number of data bits per OFDM symbol ?????number of data symbols per OFDM symbol ?????number of complex samples per packet Submission Slide 4 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Definitions ??????? ???????? Average Packet Error Rate ??? = Average Throughput ?? = ? ??? ????????? packet duration ???????= ??????????+?????, Note: Simulations stopped after 100 packet errors or 105packets number of bits per packet ?? ?????number of complex samples per packet ?????sampling period Submission Slide 5 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Spectral Efficency for Different MCS R=1/2, BPSK -3.0 R=3/4, BPSK -3.1 R=1/2, QPSK -3.2 R=3/4, QPSK -3.4 R=1/2, 16-QAM -3.6 R=3/4, 16-QAM -3.9 R=2/3, 64-QAM -4.3 R=3/4, 64-QAM -4.6 ? Outer RS coding scheme [dB] ? 802.11p [dB] -2.5 0.5 -2.7 0.4 -2.8 0.4 -3.0 0.4 -3.2 0.4 -3.5 0.4 -3.9 0.4 -4.1 0.5 ?802.11? ??? Submission Slide 6 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 AWGN (1/2) Comparison of PER in relation to SNR and Eb/N0: PER vs. Eb/N0 for fair comparison, accounts for additional energy on overhead Marginal gain for BPSK/QPSK/16-QAM, significant gain only for 64-QAM Submission Slide 7 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 AWGN (2/2) Comparison of throughput in relation to SNR and Eb/N0: Throughput vs. Eb/N0 for fair comparison, accounts for additional energy on overhead and channel use Outer RS coding scheme has lower throughput for all MCS and AWGN Slide 8 Submission Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Highway LoS (1/2) Comparison of PER in relation to SNR and Eb/N0: PER vs. Eb/N0 for fair comparison, accounts for additional energy on overhead Marginal gain for BPSK/QPSK/16-QAM, significant gain only for 64-QAM Submission Slide 9 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Highway LoS (2/2) Comparison of throughput in relation to SNR and Eb/N0: Throughput vs. Eb/N0 for fair comparison, accounts for additional energy on overhead and channel use Outer RS coding scheme has lower throughput for all MCS and Highway LoS channel Submission Slide 10 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Highway NLoS (1/2) Comparison of PER in relation to SNR and Eb/N0: PER vs. Eb/N0 for fair comparison, accounts for additional energy on overhead Marginal gain for BPSK/QPSK(R=3/4), possibly significant gains for QPSK(R=1/2),16-QAM, 64-QAM Submission Slide 11 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Highway NLoS (2/2) Comparison of throughput in relation to SNR and Eb/N0: Throughput vs. Eb/N0 for fair comparison, accounts for additional energy on overhead and channel use Outer RS coding scheme has lower throughput for all MCS and Highway NLoS channel Submission Slide 12 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 Conclusions PER vs. Eb/N0 and PER vs. SNR: PER vs. Eb/N0 for fair comparison: Accounts for additional energy on overhead Marginal gains for outer RS coding scheme for BPSK/QPSK/16-QAM Significant gain only for 64-QAM Throughput vs. Eb/N0 and Throughput vs. SNR: Throughput vs. Eb/N0 for fair comparison: Accounts for additional energy on overhead and channel use Outer RS coding scheme has lower throughput for all MCS and channels (AWGN, H-LoS, H-NLoS) Careful selection of metric to evaluate performance gains of novel schemes Submission Slide 13 Stephan Sand, German Aerospace Center (DLR)
Mar 2019 doc.: IEEE 802.11-19/0364r0 References [1] O. Haran, Backward compatible PHY feasibility, IEEE 802.11- 18/1214r0 [2] I. Sarris, "V2X Reed-Solomon Simulation Model," IEEE 802.11- 18/1956r1. Submission Slide 14 Stephan Sand, German Aerospace Center (DLR)
