Title :
MMSE diversity combining for wide-band digital cellular radio
Author :
Clark, Martin V. ; Greenstein, Larry J. ; Kennedy, William K. ; Shafi, Mansoor
Author_Institution :
Dept. of Electr. & Electron. Eng., Canterbury Univ., New Zealand
fDate :
6/1/1992 12:00:00 AM
Abstract :
A study of minimum mean-square error (MMSE) diversity combining for wide-band digital cellular radio, designed to combat intersymbol interference (ISI) caused by frequency selective fading is outlined. The systems analyzed use binary phase-shift keying (BPSK), quarternary phase-shift keying (QPSK) or 16-level quadrature amplitude modulation (16-QAM) with cosine rolloff spectral shaping, and space diversity with selection, maximal ratio or MMSE combining. A set of performance curves is presented for selected combining schemes showing the influence of the following system parameters: the diversity order (1 to 4); the cosine rolloff factor; the power delay spectrum (with its associated delay spread); the signal-to-interference ratio; and the number of modulation levels (2, 4 and 16)
Keywords :
amplitude modulation; cellular radio; digital radio systems; diversity reception; interference suppression; intersymbol interference; phase shift keying; 16-QAM; 16-level quadrature amplitude modulation; BPSK; ISI; MMSE diversity combining; QPSK; binary phase-shift keying; cosine rolloff factor; cosine rolloff spectral shaping; delay spread; diversity order; frequency selective fading; intersymbol interference; maximal ratio combining; minimum mean-square error; modulation levels; performance curves; power delay spectrum; quarternary phase-shift keying; space diversity; the signal-to-interference ratio; wide-band digital cellular radio; Binary phase shift keying; Delay; Diversity reception; Fading; Frequency diversity; Intersymbol interference; Land mobile radio cellular systems; Phase shift keying; Quadrature phase shift keying; Wideband;
Journal_Title :
Communications, IEEE Transactions on
