DCM SQPSK Modulation for Channel Aggregation in OFDM Mode
Explore the DCM SQPSK modulation options for channel aggregation in OFDM mode, focusing on performance improvements for IEEE 802.11-17/1655r2 standard. Investigate SQPSK modulation methods, simulation assumptions, and compare different options for better performance gains in 11ad.CB and 11ad.CR channels.
Download Presentation
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
NOV 2017 doc.: IEEE 802.11-17/1655r2 DCM SQPSK for channel aggregation in OFDM mode Date: 2017-11-06 Authors: Name Affiliations Address Phone email Sunwoong Yun LG Electronics Seocho LG sunwoong.yun@lge.com R&D Lab, Korea Turgeneva 30, Nizhny Novgorod 603024, Russia Artyom Lomayev Intel artyom.lomayev@intel.com SungJin Park LG Electronics allean.park@lge.com Saehee Bang LG Electronics saehee.bang@lge.com JinMin Kim LG Electronics jinmin1230.kim@lge.com Jinsoo Choi LG Electronics js.choi@lge.com Sanggook Kim LG Electronics sanggook.kim@lge.com Slide 1 LG
NOV 2017 doc.: IEEE 802.11-17/1655r2 Introduction SQPSK modulation for channel aggregation is not defined in current draft This presentation investigate several options for DCM SQPSK modulation for channel aggregation (2.16GHz+2.16GHz or 4.32GHz+4.32GHz) in OFDM mode and propose a method with better performance Slide 2 LG
NOV 2017 doc.: IEEE 802.11-17/1655r2 Simulation Assumption Channel aggregation(2.16GHz+2.16GHz or 4.32GHz+4.32GHz) SISO transmission 11ad CR, CB NLOS channel model Ideal channel estimation 11ad LDPC code(1/2) PPDU length 8192 bytes Static Tone Pairing(STP) subcarriers mapping Receiver Algorithm : MRC in frequency domain Slide 3 LG
NOV 2017 doc.: IEEE 802.11-17/1655r2 Option 1 : SQPSK in each aggregated channel The first half of data symbols are mapped to the first half of channel 1. Its conjugated repetitions are mapped to second half of the channel 1 The second half of data symbols are mapped to the first half of channel 2. Its conjugated repetitions are mapped to the second half of the channel 2 168 data symbols 168 data symbols Bits[2m, 2m+1] conj(S(n)) S(n) S(m) conj(S(m)) 168 subcarriers 168 subcarriers 168 subcarriers 168 subcarriers Aggregated channel 1 Aggregated channel 2 Slide 4 LG
NOV 2017 doc.: IEEE 802.11-17/1655r2 Option 2 : SQPSK across the aggregated channels The data symbol ?(?) is mapped to the aggregated channel 1. Its conjugated repetition S(m) is mapped to aggregated channel 2. 336 data symbols Bits[2m, 2m+1] S(n) conj(S(m)) S(m) conj(S(n)) 336 subcarriers 336 subcarriers Aggregated channel 1 Aggregated channel 2 Slide 5 LG
NOV 2017 doc.: IEEE 802.11-17/1655r2 Simulated PER of DCM SQPSK 11ad CB channel SNR gain at 1% and 0.1% PER PER Option2 Option1 Gain 1% 0.1% -1.48dB -1.2dB -1.46dB -1.1dB ~0.02dB ~0.1dB Slide 6 LG
NOV 2017 doc.: IEEE 802.11-17/1655r2 Simulated PER of DCM SQPSK 11ad CR channel SNR gain at 1% and 0.1% PER PER Option2 Option1 Gain 1% 0.1% 0.75dB 1.87dB 1.07dB 2.63dB ~ 0.4dB ~0.8dB Slide 7 LG
NOV 2017 doc.: IEEE 802.11-17/1655r2 Conclusion In this contribution, we compared the performance of Option1 : SQPSK modulation in each aggregated channel Option2 : SQPSK modulation across the aggregated channels Based on simulation, option2 have better performance 11ad CB : 0.02dB @ 1% PER, 0.1dB @ 0.1% PER 11ad CR : 0.4dB @ 1% PER, 0.8dB @ 0.1% PER We propose that DCM SQPSK modulation across the aggregated channels may be used for OFDM transmission mode Slide 8 LG
NOV 2017 doc.: IEEE 802.11-17/1655r2 SP Do you agree to define DCM SQPSK across aggregated channels as described in (11-17- 1656-00-00ay-Draft text for DCM SQPKS for channel aggregation in OFDM mode)? Slide 9 LG
