Combined turbo equalization and turbo decoding

Author

Raphaeli, Dan ; Zarai, Yoram

Author_Institution

Dept. of Electr. Eng.-Syst., Tel Aviv Univ., Israel

Volume

2

fYear

1997

fDate

3-8 Nov 1997

Firstpage

639

Abstract

In this paper, the subject of turbo coding in the presence of intersymbol interference channel is investigated. An iterative decoder structure is presented, which combines the channel equalization and the turbo decoding. At each iteration extrinsic information from the channel detector is fed into the turbo decoders, and then their extrinsic information is fed back to the channel detector. Simulation results are presented for turbo code with BPSK and and PSK modulations, transmitted over several ISI channels having severe frequency distortion. The performances are about 1 dB from the ISI channel capacity at bit error rate of 10^-5

Keywords

channel capacity; concatenated codes; convolutional codes; decoding; equalisers; intersymbol interference; iterative methods; phase shift keying; BPSK modulation; ISI channels; PSK modulation; bit error rate; channel capacity; channel equalization; extrinsic information; intersymbol interference channel; iterative decoder; severe frequency distortion; simulation results; turbo codes; turbo decoding; turbo equalization; Binary phase shift keying; Bit error rate; Channel capacity; Detectors; Frequency; Intersymbol interference; Iterative decoding; Modulation coding; Phase shift keying; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

0-7803-4198-8

Type

conf

DOI

10.1109/GLOCOM.1997.638408

Filename

638408