TY - JOUR
T1 - An effective distributed space-time code for two-path successive relay network
AU - Tian, Feng
AU - Zhang, Wei
AU - Ma, Wing Kin
AU - Ching, P. C.
AU - Poor, H. Vincent
N1 - Funding Information:
W. Zhang is with the School of Electrical Engineering & Telecommunications, University of New South Wales, Sydney, Australia (e-mail: [email protected]). His work was supported in part by the Australian Research Council Discovery Project DP1094194.
Funding Information:
F. Tian, W.-K. Ma, and P. C. Ching are with the Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong SAR of China (e-mail: {ftian, wkma, pcching}@ee.cuhk.edu.hk). Their work was partially supported by a grant from the Research Grants Council of the HK SAR China (Project no. CUHK411709).
Funding Information:
H. V. Poor is with the Department of Electrical Engineering, Princeton University, Princeton, NJ 08544 USA (e-mail: [email protected]). His work was supported in part by the U.S. National Science Foundation under Grant CNS-09-05398. Digital Object Identifier 10.1109/TCOMM.2011.060911.100686
PY - 2011/8
Y1 - 2011/8
N2 - Two-path successive relaying has recently been proposed as a mechanism for recovering the multiplexing loss of conventional relay networks; however, the full diversity cannot be guaranteed with this method. In this paper, distributed space-time block coding (STBC) is proposed for a two-path successive decode-and-forward relay network that can achieve both full rate and full diversity when perfect decoding is enabled at the relays. For the case of imperfect decoding, selection relaying is proposed with the distributed STBC to recover the full diversity. For the practical scenario in which the inter-relay channel is subject to fading, the two-path successive relaying transmission may not always be successful; for such cases an adaptive relaying scheme is proposed that can select a proper transmission mode between two-phase relaying transmission and two-path successive relaying transmission based on the channel quality of the relay network. Analytical results show that the proposed distributed STBC can offer both full diversity and a large symbol rate gain.
AB - Two-path successive relaying has recently been proposed as a mechanism for recovering the multiplexing loss of conventional relay networks; however, the full diversity cannot be guaranteed with this method. In this paper, distributed space-time block coding (STBC) is proposed for a two-path successive decode-and-forward relay network that can achieve both full rate and full diversity when perfect decoding is enabled at the relays. For the case of imperfect decoding, selection relaying is proposed with the distributed STBC to recover the full diversity. For the practical scenario in which the inter-relay channel is subject to fading, the two-path successive relaying transmission may not always be successful; for such cases an adaptive relaying scheme is proposed that can select a proper transmission mode between two-phase relaying transmission and two-path successive relaying transmission based on the channel quality of the relay network. Analytical results show that the proposed distributed STBC can offer both full diversity and a large symbol rate gain.
KW - Cooperative communications
KW - Relay network
KW - diversity technique
KW - space-time block codes
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U2 - 10.1109/TCOMM.2011.060911.100686
DO - 10.1109/TCOMM.2011.060911.100686
M3 - Article
AN - SCOPUS:80052040760
SN - 0090-6778
VL - 59
SP - 2254
EP - 2263
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 8
M1 - 5910114
ER -