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Full diversity distributed space-time trellis codes for asynchronous cooperative communications

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2 Author(s)
Yabo Li ; Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE ; Xia, Xiang-Gen

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 space-time trellis codes from BPSK to higher order QAM and PSK modulation schemes based on the unified construction proposed by Lu and Kumar. And also, simplified decoding methods are discussed. Simulation results are given to illustrate the performance of the newly proposed codes

Published in:

Information Theory, 2005. ISIT 2005. Proceedings. International Symposium on

Date of Conference:

4-9 Sept. 2005