Jorswieck, E.E.JorswieckJungnickel, V.V.JungnickelHaustein, T.T.HausteinPohl, V.V.PohlHelmolt, C. vonC. vonHelmolt2022-03-092022-03-092002https://publica.fraunhofer.de/handle/publica/34093510.1109/VTC.2002.10026602-s2.0-0036059877In 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.enerror statisticsmimo systemspacket radio networksrayleigh channelsreceiving antennassignal detectiontime-varying channelstransmitting antennassingle-user mimo transmission linkflat fadingfrequency selective rayleigh fadingtime dispersionperformancesignal separation algorithmsmismatch caseuncoded bit error ratezero-forcing detectionsuboptimal algorithmnumerical simulationsreduced complexity621conference paper