Title :
Bias terms in the optimal quadratic receiver
Author :
Mämmelä, Aarne ; Taylor, Desmond P.
Author_Institution :
Dept. of Electr. & Electron. Eng., Canterbury Univ., Christchurch, New Zealand
Abstract :
The bias terms in the likelihood functions of the optimal quadratic receiver are compared. In a Rician-fading frequency-nonselective channel with additive white Gaussian noise (AWGN) the terms are identical, and can be neglected if the transmitted signals have identical envelopes. In diversity systems including the RAKE the channels may have correlation and different average powers but no crosstalk between the channels or intersymbol interference (ISI) is allowed.
Keywords :
Gaussian noise; Rician channels; correlation methods; diversity reception; fading; intersymbol interference; maximum likelihood detection; optimisation; radio receivers; white noise; AWGN; ISI; RAKE; Rician-fading frequency-nonselective channel; additive white Gaussian noise; average power; bias terms; correlation; diversity systems; intersymbol interference; likelihood functions; optimal quadratic receiver; transmitted signals envelope; AWGN; Additive white noise; Correlators; Covariance matrix; Crosstalk; Equations; Frequency; Gaussian noise; Intersymbol interference; RAKE receivers;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.660803
