Title :
Noncoherent space-time equalization
Author :
Schober, Robert ; Pasupathy, Pas S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
Abstract :
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.
Keywords :
decision feedback equalisers; diversity reception; error statistics; fading channels; interference suppression; radiofrequency interference; receiving antennas; BERfor; CCI; ISI; adjacent channel interference; channel phase variations; cochannel interference; coherent receivers; diversity; fading; filter optimization; interfering users suppression; intersymbol interference; multiple receive antennas; noncoherent decision-feedback equalization; noncoherent linear equalization; noncoherent space-time equalization; signal-to-distortion ratio approximation; simulations; synchronization; wireless channels; Costs; Decision feedback equalizers; Fading; Frequency synchronization; Interchannel interference; Intersymbol interference; Noise robustness; Radiofrequency interference; Receiving antennas; Wireless communication;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.996965
