TY - JOUR
T1 - A family of distributed space-time trellis codes with asynchronous cooperative diversity
AU - Li, Yabo
AU - Xia, Xiang Gen
PY - 2007/4
Y1 - 2007/4
N2 - 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.
AB - 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.
KW - Asynchronous cooperative diversity
KW - Multiple-input multiple-output (MIMO)
KW - Sensor networks
KW - Space-time trellis codes
UR - https://www.scopus.com/pages/publications/34247204138
U2 - 10.1109/TCOMM.2007.894117
DO - 10.1109/TCOMM.2007.894117
M3 - Article
AN - SCOPUS:34247204138
SN - 1558-0857
VL - 55
SP - 790
EP - 800
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 4
ER -