Title :
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
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;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891291
