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Performance analysis of IEEE 802.11n solutions combining MIMO architectures with iterative decoding and sub-optimal ML detection via MMSE and zero forcing GIS solutions

Research output: Contribution to journalArticle

  • MK Abdul Aziz
  • PN Fletcher
  • AR Nix
Original languageEnglish
Pages1451 - 1456
Number of pages5
JournalIEEE Wireless Communications and Networking Conference, 2004 (WCNC 2004)
Journal publication dateMar 2004


The paper presets the performance of two newly proposed IEEE 802.11n candidate solutions by suggesting extensions to 802.11a. The new solutions incorporate a MIMO architecture for the wireless links between the network terminals. The FEC block in the PHY layer chain is also enhanced with a Turbo encoder to provide interleaving gains for the larger sized PSDUs (1-4095 bytes). Due to the ambitious data rate targets identified in 802.11n, where 'on-air' data rates of up to 320 Mbit/s are quoted, a large MIMO architecture comprising 6 transmit and 6 receive antenna elements is adopted. ML detection using such large configurations is often prohibitively complex due to an unrealistic enumerated symbol list. In this paper we propose zero-forcing and MMSE-GIS solutions to ease complexity at the receiver. PER results for these new schemes are presented and Link throughputs are compared to demonstrate the viability of the chosen solutions and their benefits over the existing 802.11a standard.

Additional information

ISBN: 0780383443 Publisher: Institute of Electrical and Electronics Engineers (IEEE) Name and Venue of Conference: Wireless Communications and Networking Conference, 2004 Rose publication type: Conference contribution Sponsorship: The authors wish to acknowledge the financial and technical support of QinetiQ Ltd. Terms of use: Copyright © 2004 IEEE. Reprinted from Proceedings of IEEE Wireless Communications and Networking Conference, 2004. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or 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 must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Research areas

  • 802.11a, 802.11n, MMSE-GIS, MIMO, ZF-GIS


Wireless Communications and Networking Conference, 2004

Duration21 Mar 200425 Mar 2004
CountryUnited States
CityAtlanta, Georgia

Event: Conference



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