Low complexity decision directed channel tracking for MIMO WLAN system

Chen, Ying, Jayalath, Dhammika, & Abhayapala, Thushara D. (2005) Low complexity decision directed channel tracking for MIMO WLAN system. In International Symposium on Intelligent Signal Processing and Communication Systems, 2005 (ISPACS 2005)., 13-16 December 2005, Hong Kong.



It is expected that the next generation wireless local area networks will be predominantly based on MIMO-OFDM physical layer. The performance of coherent MIMO-OFDM based systems critically depends on the availability of accurate channel estimations. Preambles, at the beginning of each packet, are used to estimate the channels in IEEE 802.11n systems. However, in mobile communication, when the channel is time varying, the channel variations within a given packet increases the packet error rate (PER) in the system. So the channel variations have to be tracked by the receiver. This paper proposes a low complexity channel tracking scheme for 802.11n systems to improve the PER. The delay introduced by the channel tracking scheme is within the acceptable limits.

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ID Code: 13770
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: WLAN, MIMO, OFDM, Channel Tracking
ISBN: 0780392663
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > COMMUNICATIONS TECHNOLOGIES (100500) > Communications Technologies not elsewhere classified (100599)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2005 IEEE
Copyright Statement: Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Deposited On: 16 Jun 2008 00:00
Last Modified: 10 Aug 2011 13:34

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