Receiver design for MIMO-OFDM transmission over time variant channels

T. Y. Al-Naffouri*, O. Awoniyi, O. Oteri, A. Paulraj

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

27 Scopus citations


This paper considers receiver design for Space Time Block Coded MIMO OFDM transmission over frequency selective time-variant channels. The receiver employs the expectation-maximization (EM) algorithm for joint channel and data recovery. It makes collective use of the data and channel constraints that characterize the communication problem. The data constraints include pilots, the finite alphabet constraint, and space-time block coding. The channel constraints include the finite delay spread and frequency and time correlation. The receiver employs an EM-based Kalman filter for channel estimation. The receiver is able to recover the channel (which varies from one space-time block to the next) and the data with no latency and to reduce the number of pilots needed. Simulations show that the receiver outperforms other least-squares based iterative receivers.

Original languageEnglish (US)
Number of pages6
StatePublished - 2004
Externally publishedYes
EventGLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States
Duration: Nov 29 2004Dec 3 2004


OtherGLOBECOM'04 - IEEE Global Telecommunications Conference
Country/TerritoryUnited States
CityDallas, TX

ASJC Scopus subject areas

  • General Engineering


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