Distributed Space-Time Coding for Full-Duplex Asynchronous Cooperative Communications

In this paper, we propose two distributed linear convolutional space-time coding (DLC-STC) schemes for full-duplex (FD) asynchronous cooperative communications. The DLC-STC Scheme 1 is for the case of the complete loop channel cancellation, which achieves the full asynchronous cooperative diversity....

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Vydané v:IEEE transactions on wireless communications Ročník 11; číslo 7; s. 2680 - 2688
Hlavní autori: Liu, Yi, Xia, Xiang-Gen, Zhang, Hailin
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York, NY IEEE 01.07.2012
Institute of Electrical and Electronics Engineers
Predmet:
Applied sciences
Asynchronous cooperative diversity
Channel estimation
Coding, codes
cooperative communications
Delay
distributed space-time coding
Encoding
Exact sciences and technology
full-duplex transmission
Generators
High definition video
Information, signal and communications theory
Interference
Relays
Signal and communications theory
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Performance evaluation
Space-time codes
Relay
full-duplex transmission
distributed space-time coding
Convolutional code
Control system
Asynchronous cooperative diversity
Full duplex transmission
Duplex process
Simulation
Coding
Control method
Delay time
cooperative communications
Asynchronous transmission
ISSN:1536-1276
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Popis
Shrnutí:In this paper, we propose two distributed linear convolutional space-time coding (DLC-STC) schemes for full-duplex (FD) asynchronous cooperative communications. The DLC-STC Scheme 1 is for the case of the complete loop channel cancellation, which achieves the full asynchronous cooperative diversity. The DLC-STC Scheme 2 is for the case of the partial loop channel cancellation and amplifying, where some loop signals are used as the self-coding instead of treated as interference to be directly cancelled. We show this scheme can achieve full asynchronous cooperative diversity. We then evaluate the performance of the two schemes when loop channel information is not accurate and present an amplifying factor control method for the DLC-STC Scheme 2 to improve its performance with inaccurate loop channel information. Simulation results show that the DLC-STC Scheme 1 outperforms the DLC-STC Scheme 2 and the delay diversity scheme if perfect or high quality loop channel information is available at the relay, while the DLC-STC Scheme 2 achieves better performance if the loop channel information is imperfect.
ISSN:1536-1276
DOI:10.1109/TWC.2012.060212.112214