Aj. Weiss et B. Friedlander, FADING EFFECTS ON ANTENNA-ARRAYS IN CELLULAR COMMUNICATIONS, IEEE transactions on signal processing, 45(5), 1997, pp. 1109-1117
In future application of antenna arrays to wireless communications, it
is envisioned that known signal waveforms (e.g., synchronization data
stream) will be used for estimating the array response for all the re
levant links, Once the array response is known, it will be used for se
paration and reconstruction of the unknown data stream, Since the arra
y response matrix is estimated with finite precision, we examine the e
rror effects on the signal reconstruction errors, The results are pres
ented in the form of output signal-to-interference ratio (SIR) and out
put signal-to-noise ratio (SNR) for uncorrelated signals, We obtain cl
osed-form expressions for the average output SNR and SIR for Rayleigh,
Ricean, and Nagakami fading, It is shown that in the presence of slow
ly fading channels, the diversity advantage of the array decreases as
the number of signals (or interferers) increases.