A family of distributed space-time trellis codes with asynchronous cooperative diversity

被引：76
|
作者：
Li, Yabo [1 ]
Xia, Xiang-Gen [1 ]
机构：
[1] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2007年 / 55卷 / 04期
基金：
美国国家科学基金会;
关键词：
asynchronous cooperative diversity; multiple-input multiple-output (MIMO); sensor networks; space-time trellis codes;
D O I：
10.1109/TCOMM.2007.894117
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：790 / 800
页数：11
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