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MIMO Receiver Using Reduced Complexity Sequence Estimation With Channel Estimation and Tracking

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2 Author(s)
Yau Hee Kho ; Res. Centre, Univ. of Canterbury, Christchurch ; Taylor, D.P.

A sequence-based multiple-input-multiple-output receiver incorporating channel estimation and tracking for a frequency selective fading environment is developed. It employs near-maximum likelihood sequence estimation using the partitioned Viterbi algorithm and offers linearly increasing complexity with the number of transmit antennas. The receiver implements channel estimation and tracking using a vector-polynomial-based generalized recursive least squares algorithm. The resulting integrated receiver can operate in a continuously time-varying Rayleigh or Rician fading environment. Simulation results show that it offers a good tradeoff between complexity and performance. Further complexity reduction can be achieved using tentative decisions as reference signals to the estimator and a reduced complexity form of the estimator.

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:58 ,  Issue: 2 )

Date of Publication:

Feb. 2009

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