Space-time turbo codes: decorrelation properties and performance analysis for fading channels

Author

Vishwanath, Sriram ; Yu, Wei ; Negi, Rohit ; Goldsmith, Andrea

Author_Institution

Dept. of Electr. Eng., Stanford Univ., CA, USA

Volume

2

fYear

2000

fDate

2000

Firstpage

1016

Abstract

This paper studies the decorrelation property of the constituent codes in space-time turbo codes (STTCs), where different constituent codes are transmitted over different antennas. We show that the time correlation between constituent codes falls of with respect to STTC block length N as 1/√N for large N, and hence goes to zero as N→∞. We then use this result to obtain analytical expressions for the frame error rate (FER) of STTCs in flat fading. The decorrelation property of STTCs helps explain the exceptional performance of STTCs on slowly varying flat fading channels

Keywords

channel coding; concatenated codes; convolutional codes; decorrelation; error statistics; fading channels; random processes; turbo codes; FER; STTC block length; antennas; channel coding; decorrelation properties; frame error rate; parallel concatenated code; performance analysis; random permutation; recursive convolutional encoders; slowly varying flat fading channels; space-time turbo codes; time correlation; Convolutional codes; Decorrelation; Error analysis; Fading; Performance analysis; Receiving antennas; Space time codes; Transmitters; 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.2000.891291

Filename

891291