Block turbo codes for space-time systems

Author

Cavalec-Amis, K. ; Pyndiah, R.

Author_Institution

ENST de Bretagne, Brest, France

Volume

2

fYear

2000

fDate

2000

Firstpage

1021

Abstract

Advances in the field of information theory have shown that wireless systems using multiple transmitters and multiple receivers can significantly improve the spectral efficiency. Systems using transmit and receive diversity associated with coding such as space time trellis codes have since been developed. A scheme using convolutional turbo codes (CTC) with two transmitters and two receivers has been proposed previously. It exhibits significant gains over space time trellis codes (up to 6 dB at a BER of 10^-5). Our purpose is to extend that study to block turbo codes (BTC). We use the (32, 26, 4) extended BCH product code with two kinds of modulation (QPSK and 16-QAM). Simulations show that BTC associated with transmit and receive diversity perform as well as CTC in terms of the coding gains while achieving higher spectral efficiencies

Keywords

BCH codes; block codes; decoding; error statistics; interleaved codes; phase shift keying; quadrature amplitude modulation; turbo codes; 16-QAM; BER; QPSK; block turbo codes; coding gain; convolutional turbo codes; extended BCH product code; information theory; interleaving device; modulation; multiple receivers; multiple transmitters; receive diversity; soft input output decoder; space time trellis codes; space-time systems; spectral efficiency; transmit diversity; wireless systems; Attenuation; Constellation diagram; Decoding; Gaussian noise; Interleaved codes; Product codes; Quadrature phase shift keying; Signal to noise ratio; Transmitting antennas; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-6451-1

Type

conf

DOI

10.1109/GLOCOM.2000.891292

Filename

891292