DocumentCode :
777585
Title :
A Family of Distributed Space-Time Trellis Codes With Asynchronous Cooperative Diversity
Author :
Li, Yabo ; Xia, Xiang-Gen
Author_Institution :
Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE
Volume :
55
Issue :
4
fYear :
2007
fDate :
4/1/2007 12:00:00 AM
Firstpage :
790
Lastpage :
800
Abstract :
In current cooperative communication schemes, to achieve cooperative diversity, synchronization between terminals is usually assumed, which may not be practical since each terminal has its own local oscillator. In this paper, based on the stack construction proposed by Hammons and El Gamal, we first construct a family of space-time trellis codes for BPSK modulation scheme that is characterized to possess the full cooperative diversity order without the synchronization assumption. We then generalize this family of the space-time trellis codes from BPSK to higher order QAM and PSK modulation schemes based on the unified construction proposed by Lu and Kumar. Some diversity product properties of space-time trellis codes are studied and simplified decoding methods are discussed. Simulation results are given to illustrate the performance of the newly proposed codes
Keywords :
decoding; diversity reception; phase shift keying; quadrature amplitude modulation; space-time codes; trellis coded modulation; BPSK modulation scheme; QAM; asynchronous cooperative diversity; cooperative communication schemes; decoding methods; distributed space-time trellis codes; Binary phase shift keying; Convolutional codes; Diversity methods; Local oscillators; MIMO; Modular construction; Modulation coding; Receiving antennas; Relays; Sensor systems; Asynchronous cooperative diversity; multiple-input multiple-output (MIMO); sensor networks; space–time trellis codes;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2007.894117
Filename :
4155128
Link To Document :
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