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

Yabo Li; Xiang Gen Xia

doi:10.1109/TCOMM.2007.894117

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

Yabo Li^*, Xiang Gen Xia

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

88 Citations (Scopus)

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.

Original language	English
Pages (from-to)	790-800
Number of pages	11
Journal	IEEE Transactions on Communications
Volume	55
Issue number	4
DOIs	https://doi.org/10.1109/TCOMM.2007.894117
Publication status	Published - Apr 2007
Externally published	Yes

Keywords

Asynchronous cooperative diversity
Multiple-input multiple-output (MIMO)
Sensor networks
Space-time trellis codes

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10.1109/TCOMM.2007.894117

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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.",

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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

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

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