Recursive Detection of M-Ary Signals over Fast Varying Mobile Communication Channel
Abstract: Mobile radio is
characterized by a fast time varying channel. Conventional detectors which
designed optimal for non-fading channel exhibit a limited performance in fast
time varying channel. In this paper a recursive detector for M-ary signals over
fast time varying mobile communication channel is introduced. The proposed detector
continuously estimates the channel directly within the metric calculation of
the log-likelihood function in a recursive manner. The estimation of the
channel is performed by the covariance form of the recursive least square
approach. The performance of the detector is evaluated in terms of the
misdetection probability. The effects of timing and phase offsets on the
performance of detector are examined by simulation. Simulation results show
that the proposed detector can accommodate the fast time varying channel with
adequate performance.
Author: Ahmed El-Sayed
El-Mahdy
Journal Code: jptkomputergg130033
