Differential transmission for amplify-and-forward broadband cooperative communications

A distributed differential space-time-frequency (STF) coding scheme is proposed for single-relay assisted cooperative communication networks over frequency-selective fading channels. Using full diversity rotation and Cayley transformation at the source node, our proposed scheme can achieve both spat...

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Published in:2008 Third International Conference on Communications and Networking in China pp. 410 - 414
Main Authors: Zhenzhen Gao, Shihua Zhu, Jing Xu
Format: Conference Proceeding
Language:English
Published: IEEE 01.08.2008
Subjects:
Broadband communication
Channel estimation
Channel state information
Design engineering
Diversity methods
Frequency diversity
Frequency-selective fading channels
Knowledge engineering
Relays
Wireless communication
ISBN:9781424423736, 1424423732
Online Access:Get full text
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Abstract A distributed differential space-time-frequency (STF) coding scheme is proposed for single-relay assisted cooperative communication networks over frequency-selective fading channels. Using full diversity rotation and Cayley transformation at the source node, our proposed scheme can achieve both spatial and multipath diversity without any instantaneous channel state information at the destination node. Both theoretic analysis and simulation results demonstrate that a diversity gain of L 3 + min(L 1 , L 2 ) can be achieved by the scheme, where L 1 , L 2 , and L 3 are the channel memory length for the source-to-relay (S rarr R), relay-to-destination (R rarr D), and source-to-destination (S rarr D) links, respectively. This simple transmission scheme needs neither complicated processing at the relay node, nor channel estimation at the destination node. Furthermore, a rate of 1.5 real symbols per channel use can be achieved when the relay node retransmits the information symbols to the destination node.
AbstractList A distributed differential space-time-frequency (STF) coding scheme is proposed for single-relay assisted cooperative communication networks over frequency-selective fading channels. Using full diversity rotation and Cayley transformation at the source node, our proposed scheme can achieve both spatial and multipath diversity without any instantaneous channel state information at the destination node. Both theoretic analysis and simulation results demonstrate that a diversity gain of L 3 + min(L 1 , L 2 ) can be achieved by the scheme, where L 1 , L 2 , and L 3 are the channel memory length for the source-to-relay (S rarr R), relay-to-destination (R rarr D), and source-to-destination (S rarr D) links, respectively. This simple transmission scheme needs neither complicated processing at the relay node, nor channel estimation at the destination node. Furthermore, a rate of 1.5 real symbols per channel use can be achieved when the relay node retransmits the information symbols to the destination node.
Author Shihua Zhu
Jing Xu
Zhenzhen Gao
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  surname: Jing Xu
  fullname: Jing Xu
  organization: Dept. of Inf. & Commun. Eng., Xian Jiaotong Univ., Xian
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Snippet A distributed differential space-time-frequency (STF) coding scheme is proposed for single-relay assisted cooperative communication networks over...
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StartPage 410
SubjectTerms Broadband communication
Channel estimation
Channel state information
Design engineering
Diversity methods
Frequency diversity
Frequency-selective fading channels
Knowledge engineering
Relays
Wireless communication
Title Differential transmission for amplify-and-forward broadband cooperative communications
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