Noncoherent space-time equalization

TitleNoncoherent space-time equalization
Publication TypeConference Paper
Year of Publication2002
AuthorsSchober, R., and P. S. Pasupathy
Conference NameCommunications, 2002. ICC 2002. IEEE International Conference on
Pagination797 - 801 vol.2
Keywordsadjacent channel interference, BERfor, CCI, channel phase variations, cochannel interference, coherent receivers, decision feedback equalisers, diversity, diversity reception, error statistics, fading, fading channels, filter optimization, interference suppression, interfering users suppression, intersymbol interference, ISI, multiple receive antennas, noncoherent decision-feedback equalization, noncoherent linear equalization, noncoherent space-time equalization, radiofrequency interference, receiving antennas, signal-to-distortion ratio approximation, simulations, synchronization, wireless channels

In this paper, noncoherent equalization is combined with multiple receive antennas. The resulting noncoherent space-time equalization (NSTE) schemes are analyzed and compared with the corresponding coherent receivers. In particular, noncoherent linear equalization (NLE) and noncoherent decision-feedback equalization (NDFE) are considered. For both NLE and NDFE novel approximations for the signal-to-distortion ratio (SDR) are given and verified by simulations. It is shown that NSTE can suppress interfering users and exploit diversity as effectively as coherent STE. However, NSTE is more robust against channel phase variations than coherent STE combined with synchronization.


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