Forward error correction of FSK alphabets for noncoherent transmissions over AWGN channel

Author

Durand, Céline ; Boutros, Joseph ; Bejjani, Elie

Author_Institution

ComElec Dept., ENST Univ., Paris, France

Volume

4

Issue

10

fYear

2000

Firstpage

318

Lastpage

320

Abstract

We show that several coding schemes, in particular turbo encoding, dramatically improve the performance of a noncoherently detected frequency shift-keying modulation with correlated signals. The proposed a posteriori probability (APP) decoder based on bit-by-bit decisions proves to be highly flexible and more efficient than a classical block decisions decoding scheme. Moreover, the choice of the FSK modulation tone spacing is important. Simulation results show that the turbo-coded FSK exhibits the lowest error probability when compared to TCM, convolutional and lattice encoding schemes.

Keywords

AWGN channels; decoding; error statistics; forward error correction; frequency shift keying; modulation coding; signal detection; turbo codes; AWGN channel; FSK alphabets; FSK modulation tone spacing; TCM; a posteriori probability decoder; bit-by-bit decisions; convolutional encoding; correlated signals; error probability; forward error correction; lattice encoding; noncoherent transmissions; noncoherently detected frequency shift-keying; simulation results; turbo encoding; turbo-coded FSK; Convolution; Convolutional codes; Decoding; Encoding; Error probability; Forward error correction; Frequency modulation; Frequency shift keying; Modulation coding; Turbo codes;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.880821

Filename

880821