Title :
Improved blind turbo detector
Author :
Ha, Panbong ; Honary, Bahram
Author_Institution :
Dept. of Electron. Eng., Changwon Nat. Univ., Changwon, South Korea
Abstract :
The subject of turbo coding in the presence of an intersymbol interference (ISI) channel whose characteristics are unknown is investigated. An iterative blind turbo detector, is presented, which combines the channel estimation, the channel equalization, and the turbo decoding. Simulation results are presented for rate 1/2 recursive systematic convolutional (RSC) codes and rate 1/3 turbo codes with BPSK modulation, transmitted over an ISI channel having severe frequency distortion. We can improve the performance when we use a good choice of RSC encoder of which the denominator is a primitive polynomial
Keywords :
blind equalisers; convolutional codes; intersymbol interference; iterative decoding; phase shift keying; polynomials; signal detection; telecommunication channels; turbo codes; BPSK; ISI channel; MAP algorithm; RSC encoder; channel equalization; channel estimation; code rate; denominator; frequency distortion; intersymbol interference channel; iterative blind turbo detector; iterative decoding; performance improvement; primitive polynomial; recursive systematic convolutional codes; simulation results; turbo coding; turbo decoding; Binary phase shift keying; Blind equalizers; Channel estimation; Convolutional codes; Detectors; Frequency; Intersymbol interference; Iterative decoding; Modulation coding; Turbo codes;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851314
