Title :
Adaptive MLSE for DPSK in time- and frequency-selective channels
Author :
Baas, Nicholas J. ; Taylor, Desmond P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Canterbury Univ., Christchurch
fDate :
9/1/2008 12:00:00 AM
Abstract :
An adaptive equalizer structure based on a state space formulation and maximum likelihood sequence estimation (MLSE) is developed for a time-varying, frequency-selective channel. Differential phase shift keying (DPSK) is assumed at the transmitter and effective differential decoding is performed at the receiver. The standard models of a time-varying linear channel and the Karhunen-Loeve (KL) expansion underpin the receiver structure. Analytical and simulation results for the receiver are shown. The resulting receiver is a per-survivor structure.
Keywords :
decoding; differential phase shift keying; maximum likelihood sequence estimation; receivers; time-varying channels; transmitters; DPSK; Karhunen-Loeve expansion underpin; adaptive MLSE; adaptive equalizer structure; differential decoding; differential phase shift keying; frequency-selective channels; maximum likelihood sequence estimation; receiver; state space formulation; time-selective channels; time-varying channel; transmitter; Adaptive equalizers; Analytical models; Differential phase shift keying; Differential quadrature phase shift keying; Frequency estimation; Maximum likelihood decoding; Maximum likelihood estimation; State estimation; State-space methods; Transmitters; Adaptive equalizers; Kalman filtering; Viterbi detection;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2008.060159
