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., Univ. of Delaware, Newark, DE, USA
Abstract :
In current cooperative communication schemes, to achieve cooperative diversity, synchronization between terminals is usually assumed which may no 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 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; modulation coding; phase shift keying; quadrature amplitude modulation; space-time codes; trellis codes; BPSK; PSK modulation scheme; asynchronous cooperative diversity; binary phase shift keying; distributed space-time trellis code; higher order QAM; local oscillator; quadrature amplitude modulation; simplified decoding method; stack construction; unified construction; Binary phase shift keying; Convolutional codes; Diversity methods; Local oscillators; Modular construction; Modulation coding; Phase shift keying; Quadrature amplitude modulation; Relays; Sensor systems;
Conference_Titel :
Information Processing in Sensor Networks, 2005. IPSN 2005. Fourth International Symposium on
Print_ISBN :
0-7803-9201-9
DOI :
10.1109/IPSN.2005.1440944
