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Interference mitigation in coexistence of WLAN network with radar

Coexistence between 802.11 wireless local area network (WLAN) and radars operating in co/adjacent channel scenarios (notably 5 GHz) is a problem of considerable importance that requires new innovations. We propose a modified Wi-Fi link design that mitigates the interference from a pulsed search rada...

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Main Authors:	Mehrnoush, Morteza, Roy, Sumit
Format:	Conference Proceeding
Language:	English
Subjects:	Interference Interference Mitigation Network Coexistence OFDM Radar Radar antennas Receivers Wireless fidelity WLAN 802.11
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creator	Mehrnoush, Morteza Roy, Sumit
description	Coexistence between 802.11 wireless local area network (WLAN) and radars operating in co/adjacent channel scenarios (notably 5 GHz) is a problem of considerable importance that requires new innovations. We propose a modified Wi-Fi link design that mitigates the interference from a pulsed search radar such that the WLAN network continues to operate outside the exclusion region with no noticeable performance degradation. For low density parity check (LDPC) encoding adopted in high throughput WLANs such as 802.11n and .ac, the modified receiver includes a new interleaver and a log-likelihood ratio (LLR) mapping function to successfully mitigate the impact of radar interference. We evaluate, via simulations, the impact of interleaver length and LLR mapping function parameters to determine the optimum combination that yields the desirable frame error rate (FER) performance.
doi_str_mv	10.1109/RADAR.2017.7944208
format	conference_proceeding
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ispartof	2017 IEEE Radar Conference (RadarConf), 2017, p.0257-0262
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recordid	cdi_ieee_primary_7944208
source	IEEE Xplore All Conference Series
subjects	Interference Interference Mitigation Network Coexistence OFDM Radar Radar antennas Receivers Wireless fidelity WLAN 802.11
title	Interference mitigation in coexistence of WLAN network with radar
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