Joint Channel Estimation and Interference Suppressions for MB-OFDM UWB Systems

S. M. Riazul Islam, Asif Iqbal, Kyung Sup Kwak

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

New channel estimation technique is proposed for multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) systems. Several steps have been carried out to achieve this purpose. In first step, refined least square (LS) channel estimation is found out by using subspace-based narrowband interference (NBI) estimation method with prilimonary LS channel. In second step, low rank least square minimum mean squared error (LMMSE) channel estimation is performed using this refined LS channel estimation. Finally, Blackman windowing is applied on low rank LMMSE channel to reduce the spectral leakage and hence to increase the channel estimation accuracy. Before starting the actual channel estimation, an ICI mitigation filter is used to minimize the reduction of signal-to-interference ratio (SIR) due to imperfect frequency synchronization. Link level simulation (LLS) urges that our proposed technique has improved performance.
Original languageEnglish
Title of host publication2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)9781424437092
ISBN (Print)9781424437085
DOIs
Publication statusPublished - 14 Oct 2010
Externally publishedYes
Event6th International Conference on Wireless Communications, Networking and Mobile Computing - Chengdu, China
Duration: 23 Sep 201025 Sep 2010
Conference number: 6

Publication series

NameInternational Conference on Wireless Communications, Networking and Mobile Computing
PublisherIEEE
ISSN (Print)2161-9646
ISSN (Electronic)2161-9654

Conference

Conference6th International Conference on Wireless Communications, Networking and Mobile Computing
Abbreviated titleWiCOM 2010
Country/TerritoryChina
CityChengdu
Period23/09/1025/09/10

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