Channel estimation in a proposed IEEE802.11n OFDM MIMO WLAN system

I. Tai Lu, Kun Ju Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Effects of improved channel estimation are studied for a proposed IEEE 802.11n OFDM MIMO system. Three channel estimation methods are considered: maximum likelihood (ML), time-domain truncation (TDT) and model-based (MB). TDT and MB are particularly useful when the channel delay spread is short. For an MMSE receiver, MB shows a 1-2.5dB improvement over ML on the packet error rate performance for TGn channels B and D for various modulation and coding schemes. TDT is a simplified version of MB and shows a 1-2dB improvement over ML at low SNRs. But improvements diminish when transmit beamforming is also employed.

Original languageEnglish (US)
Title of host publication2007 IEEE Sarnoff Symposium, SARNOFF
StatePublished - 2007
EventIEEE Sarnoff Symposium, SARNOFF 2007 - Princeton, NJ, United States
Duration: Apr 30 2007May 2 2007

Publication series

Name2007 IEEE Sarnoff Symposium, SARNOFF


OtherIEEE Sarnoff Symposium, SARNOFF 2007
Country/TerritoryUnited States
CityPrinceton, NJ


  • Channel estimation
  • IEEE802.11n
  • MIMO

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Electrical and Electronic Engineering
  • Communication


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