Explore the key discussions in the September 2019 document related to IEEE 802.11-19/1470r0. Topics include preamble power boost, RL-SIG evaluation, NGV frame format, simulation settings, and LTF boosting for different scenarios. Gain valuable insights into the proposed power boost levels and performance evaluations.
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
September 2019 doc.: IEEE 802.11-19/1470r0 11bd Frame Format: Simulations Date: 2019-09-15 Authors: Name Affiliations Address Phone email Prashant Sharma Marvell 5488 Marvell Ln, Santa Clara, CA 95054 psharma@marvell.com Rui Cao ruicao@marvell.com Hongyuan Zhang hongyuan@marvell.com Submission Slide 1 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Introduction In previous meetings, preamble power boost and R- LSIG have been decided. In this contribution, we will propose the preamble power boost level, and evaluate the auto-detection performance with RL-SIG. Submission Slide 2 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 NGV Frame Format: Recap 10MHz NGV Portion L-SIG RL-SIG LSTF LLTF LSTF+LLTF: power boost by x1 dB and x2 dB for BPSK modulation [1] Simulations to determine x1 and x2 value R-LSIG added after L-SIG [2]. RL-SIG provide better L-SIG decoding performance, ideally 3dB RL-SIG can also been used to auto-detect NGV PPDU format. 20MHz PPDU preamble will repeat 10MHz preamble. Submission Slide 3 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Simulation Settings LTF Boost 10MHz PPDU: 11ac 20MHz DC2 + LDPC. Pkt size: 300 bytes baseline. Midamble Period 10 symbols Format Repeated 2x-Compressed (RC-LTF) No CFO Real carrier sensing and timing. PER plots for LTF Boost LTF Boost = 0, 1, 2 ,3 dB STF Boost = 3 dB BPSK & BPSK DCM Submission Slide 4 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Rural LOS LTF Boost: 11bd, RealTiming, LDPC, Midamble, CFO-OFF, 300 Bytes CH:Rural LOS 0 10 LTFBoost0dB LTFBoost1dB LTFBoost2dB LTFBoost3dB BPSK BPSK-DCM PER -1 10 -2 10 -3 -2 -1 0 1 2 SNR (dB) L-LTF power boost doesn t have much impact on the performance Submission Slide 5 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Highway LOS LTF Boost: 11bd, RealTiming, LDPC, Midamble, CFO-OFF, 300 Bytes CH:Highway LOS 0 10 LTFBoost0dB LTFBoost1dB LTFBoost2dB LTFBoost3dB BPSK BPSK-DCM PER -1 10 -2 10 -2 -1 0 1 2 3 SNR (dB) L-LTF power boost doesn t have much impact on the performance Submission Slide 6 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Urban Approaching LOS LTF Boost: 11bd, RealTiming, LDPC, Midamble, CFO-OFF, 300 Bytes CH:Urban Approaching LOS 0 10 LTFBoost0dB LTFBoost1dB LTFBoost2dB LTFBoost3dB BPSK BPSK-DCM PER -1 10 -2 10 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 SNR (dB) L-LTF power boost doesn t have much impact on the performance Submission Slide 7 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Highway NLOS LTF Boost: 11bd, RealTiming, LDPC, Midamble, CFO-OFF, 300 Bytes CH:Highway NLOS 0 10 LTFBoost0dB LTFBoost1dB LTFBoost2dB LTFBoost3dB BPSK BPSK-DCM PER -1 10 -2 10 -1 0 1 2 3 4 5 SNR (dB) L-LTF power boost doesn t have much impact on the performance Submission Slide 8 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Urban Crossing NLOS LTF Boost: 11bd, RealTiming, LDPC, Midamble, CFO-OFF, 300 Bytes CH:Urban Crossing NLOS 0 10 LTFBoost0dB LTFBoost1dB LTFBoost2dB LTFBoost3dB BPSK BPSK-DCM PER -1 10 -2 10 -2 -1 0 1 2 3 4 5 SNR (dB) L-LTF power boost doesn t have much impact on the performance Submission Slide 9 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Simulation Settings Preamble Boost 10MHz PPDU: 11ac 20MHz DC2 + LDPC. Pkt size: 300 bytes baseline. Midamble Period 10 symbols Format Repeated 2x-Compressed (RC-LTF) CFO: Uniform [-10 10]ppm on both Tx and Rx side. Real carrier sensing and timing. PER plots for Preamble Boost (STF Boost & LTF Boost) Preamble Boost = 0, 1, 2 ,3, 6 dB LTF Boost = STF Boost BPSK & BPSK DCM Submission Slide 10 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Rural LOS Preamble Boost: 11bd, RealTiming, LDPC, Midamble-10, CFO-ON, 300 Bytes CH:Rural LOS 0 10 Boost0dB Boost1dB Boost2dB Boost3dB Boost6dB BPSK BPSK-DCM PER -1 10 -2 -1 0 1 2 3 4 SNR (dB) L-STF power boost shows significant performance gain for BPSK-DCM BPSK also shows some gain 3db power boost seems reasonable Submission Slide 11 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Highway LOS Preamble Boost: 11bd, RealTiming, LDPC, Midamble-10, CFO-ON, 300 Bytes CH:Highway LOS 0 10 Boost0dB Boost1dB Boost2dB Boost3dB Boost6dB BPSK BPSK-DCM PER -1 10 -2 -1 0 1 2 3 4 SNR (dB) L-STF power boost shows significant performance gain for BPSK-DCM BPSK also shows some gain 3db power boost seems reasonable Submission Slide 12 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Urban Approaching LOS Preamble Boost: 11bd, RealTiming, LDPC, Midamble-10, CFO-ON, 300 Bytes CH:Urban Approaching LOS 0 10 Boost0dB Boost1dB Boost2dB Boost3dB Boost6dB BPSK BPSK-DCM PER -1 10 -2 -1 0 1 2 3 4 SNR (dB) L-STF power boost shows significant performance gain for BPSK-DCM BPSK also shows some gain 3db power boost seems reasonable Submission Slide 13 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Highway NLOS Preamble Boost: 11bd, RealTiming, LDPC, Midamble-10, CFO-ON, 300 Bytes CH:Highway NLOS 0 10 Boost0dB Boost1dB Boost2dB Boost3dB Boost6dB BPSK BPSK-DCM PER -1 10 0 1 2 3 4 5 6 7 8 SNR (dB) L-STF power boost shows significant performance gain for BPSK-DCM BPSK also shows some gain 3db power boost seems reasonable Submission Slide 14 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Urban Crossing NLOS Preamble Boost: 11bd, RealTiming, LDPC, Midamble-10, CFO-ON, 300 Bytes CH:Urban Crossing NLOS 0 10 Boost0dB Boost1dB Boost2dB Boost3dB Boost6dB BPSK BPSK-DCM PER -1 10 -1 0 1 2 3 4 5 6 SNR (dB) L-STF power boost shows significant performance gain for BPSK-DCM BPSK also shows some gain 3db power boost seems reasonable Submission Slide 15 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Simulation Settings Autodetection performance using RL-SIG 10MHz PPDU: 11ac 20MHz DC2 + LDPC. Pkt size: 300 bytes baseline. Midamble Period 10 symbols Format Repeated 2x-Compressed (RC-LTF) CFO: Uniform [-10 10]ppm on both Tx and Rx side. Ideal Timing P_error plots Missed RL-SIG detection (repetition check) RL-SIG PER Data PER Submission Slide 16 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Rural LOS Autodetection: 11bd, IdealTiming, LDPC, Midamble-10, CFO-ON, 300 Bytes CH:Rural LOS 0 10 PMiss RLSIG PER Perror -1 10 -2 10 -5 -4 -3 -2 -1 0 1 2 SNR (dB) Submission Slide 17 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Highway LOS Autodetection: 11bd, IdealTiming, LDPC, Midamble-10, CFO-ON, 300 Bytes CH:Highway LOS 0 10 PMiss RLSIG PER Perror -1 10 -2 10 -5 -4 -3 -2 -1 0 1 2 SNR (dB) Submission Slide 18 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Urban Approaching LOS Autodetection: 11bd, IdealTiming, LDPC, Midamble-10, CFO-ON, 300 Bytes CH:Urban Approaching LOS 0 10 PMiss RLSIG PER Perror -1 10 -2 10 -5 -4 -3 -2 -1 0 1 2 3 SNR (dB) Submission Slide 19 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Discussions Preamble power boost: L-STF power boost shows most gain up to 3dB. L-LTF power boost does not show much improvement. Better keep the same power from L-STF to L-LTF to maintain the same preamble detection behavior with existing scheme in 11p products. x1 = 3dB and x2 = 3dB is a good combination RL-SIG autodetection: Performance is sufficiently good, so no extra preamble pattern is needed. Submission Slide 22 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Reference [1] Bo Sun and etc., 802.11 NGV SG Proposed PAR , IEEE 802.11-18/0861r9. [2] Rui Cao and etc., Potential PHY Designs for NGV , IEEE 802.11-19/0016r0. [3] Dongguk Lim and etc., Consideration on Features for 11bd , 802.11-19/0009r0. Submission Slide 23 Prashant Sharma and etc., Marvell
September 2019 doc.: IEEE 802.11-19/1470r0 Straw Poll 1 Do you agree to add the following text into Section 3 of SFD? 11bd L-STF shall be boosted by 3dB when NGV data portion is modulated with BPSK. 11bd L-LTF shall be boosted by 3dB when NGV data portion is modulated with BPSK. Y: N: A: Submission Slide 24 Prashant Sharma and etc., Marvell
