Title :
Adaptive equaliser for differentially coherent receiver
Author :
Sehier, P. ; Kaleh, G. Kawas
Author_Institution :
Alcatel ATFH, Levallois-Perret, France
Abstract :
The authors propose to combine adaptive equalisation and differentially coherent reception. An appropriate LMS algorithm is deduced to adapt the equaliser. They determine the optimum equaliser coefficients which minimise the mean-squared error between the input to the threshold detector and the desired symbol. The system of equations to solve is not linear as in the coherent reception. It is of the third order and requires computer calculations. The error probability of the differential detector with and without equaliser is calculated for BPSK. Simulation results are also given.<>
Keywords :
adaptive filters; digital communication systems; equalisers; phase shift keying; probability; signal detection; BPSK; LMS algorithm; adaptive equalisation; adaptive filters; differential detector; differentially coherent reception; digital communication systems; error probability; mean-squared error; optimum equaliser coefficients; third order equations;
Journal_Title :
Communications, Speech and Vision, IEE Proceedings I
