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On the performance of signal detection algorithms in flat-fading and frequency-selective MIMO channels

 
: Jorswieck, E.; Jungnickel, V.; Haustein, T.; Pohl, V.; Helmolt, C. von

:

Institute of Electrical and Electronics Engineers -IEEE-:
IEEE 55th Vehicular Technology Conference, VTC Spring 2002. Vol.1 : May 6 - 9, 2002, Birmingham, Alabama
Piscataway: IEEE Operations Center, 2002
ISBN: 0-7803-7484-3
S.40-44
Vehicular Technology Conference (VTC) <55, 2002, Birmingham>
Englisch
Konferenzbeitrag
Fraunhofer HHI ()
error statistics; mimo systems; packet radio networks; rayleigh channels; receiving antennas; signal detection; time-varying channels; transmitting antennas; single-user mimo transmission link; flat fading; frequency selective rayleigh fading; time dispersion; performance; signal separation algorithms; mismatch case; uncoded bit error rate; zero-forcing detection; suboptimal algorithm; numerical simulations; reduced complexity

Abstract
In this work, we study a single-user MIMO transmission link in flat and frequency selective Rayleigh fading. The impact of the time dispersion in the channel on the performance of the signal separation algorithms is analyzed. We discuss the mismatch case in which the receiver assumes a flat-fading channel but is confronted actually with a frequency-selective MIMO channel. We give an analytical formula for the uncoded bit error rate in the mismatch case for zero-forcing detection. It is shown how to generalize the well known signal detection algorithms for flat-fading MIMO channels to the frequency-selective case. In particular, the performance and complexity of these algorithms is compared. A suboptimal algorithm with reduced complexity is proposed and compared to the optimal algorithms. All theoretical results are confirmed by numerical simulations.

: http://publica.fraunhofer.de/dokumente/N-12812.html