TY - JOUR
T1 - On the distortion exponents of layered broadcast transmission in multi-relay cooperative networks
AU - Wang, Jing
AU - Liang, Jie
AU - Muhaidat, Sami
N1 - Funding Information:
Manuscript received August 18, 2009; accepted June 03, 2010. Date of publication June 14, 2010; date of current version September 15, 2010. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Anna Scaglione. This work was supported in part by the Natural Sciences and Engineering Research Council (NSERC) of Canada under Grants RGPIN312262-05, EQPEQ330976-2006, and STPGP350416-07. The material in this paper was presented in part at the IEEE International Symposium on Information Theory, Seoul, Korea, June 28–July 3, 2009.
PY - 2010/10
Y1 - 2010/10
N2 - In this paper, we consider the transmission of a Gaussian source over a cooperative relay network, and analyze its end-to-end distortion at high signal-to-noise ratio, in terms of the distortion exponent. Our contributions are threefold. First, we extend the existing distortion exponent analyses to cooperative networks with an arbitrary number of relays. Second, we derive the distortion exponents when the layered source coding with broadcast transmission strategy is used in multi-relay networks under three cooperation protocols, based on repetition, relay selection, and spacetime coding, respectively. Our analyses reveal the impacts of the number of relays, bandwidth ratio and cooperation protocol on the distortion exponent. Third, we prove the successive refinability of the diversity-multiplexing tradeoffs of the three multi-relay cooperation protocols.
AB - In this paper, we consider the transmission of a Gaussian source over a cooperative relay network, and analyze its end-to-end distortion at high signal-to-noise ratio, in terms of the distortion exponent. Our contributions are threefold. First, we extend the existing distortion exponent analyses to cooperative networks with an arbitrary number of relays. Second, we derive the distortion exponents when the layered source coding with broadcast transmission strategy is used in multi-relay networks under three cooperation protocols, based on repetition, relay selection, and spacetime coding, respectively. Our analyses reveal the impacts of the number of relays, bandwidth ratio and cooperation protocol on the distortion exponent. Third, we prove the successive refinability of the diversity-multiplexing tradeoffs of the three multi-relay cooperation protocols.
KW - Cooperative communications
KW - distortion exponent
KW - diversity-multiplexing tradeoff
KW - layered broadcast transmission
KW - relay channel
UR - http://www.scopus.com/inward/record.url?scp=77956787103&partnerID=8YFLogxK
U2 - 10.1109/TSP.2010.2053030
DO - 10.1109/TSP.2010.2053030
M3 - Article
AN - SCOPUS:77956787103
SN - 1053-587X
VL - 58
SP - 5340
EP - 5352
JO - IEEE Transactions on Signal Processing
JF - IEEE Transactions on Signal Processing
IS - 10
M1 - 5484582
ER -