TY - GEN
T1 - Adaptive power allocation for Decode-and-Forward OFDM transmission with multi-hop relaying
AU - Wang, Jun
AU - Li, Yang
AU - Zhong, Bin
AU - Zhang, Zhongshan
AU - Long, Keping
PY - 2013
Y1 - 2013
N2 - We investigated the adaptive power allocation in an point-to-point orthogonal frequency Division multiplexing (OFDM) cooperative system subject to the individual power constraint with an objective of maximize the sum transmission rate, and derived the optimal power allocation by assuming independent and identically distributed (i.i.d.) sub-channels in each Decode-and-Forward (DF) relay. To improve the wireless coverage, we extended the conventional two-hop system model to a three-hop structure without considering the effect of inter-relay interference. The structure can effectively overcome the transmission bottleneck in the conventional two-hop system. This paper also considered relay selection for the proposed cooperative transmission. In other words, depending on the quality of the sub-channels, each relay decides whether to forward data itself. The simulation results shows that the sum rate of the proposed algorithm monotonically increases with the increasing of both the power of each node and sub-channel numbers. Numerical results prove the goodness of the three-hop model in terms of sum rate and validate the proposed theoretical analysis.
AB - We investigated the adaptive power allocation in an point-to-point orthogonal frequency Division multiplexing (OFDM) cooperative system subject to the individual power constraint with an objective of maximize the sum transmission rate, and derived the optimal power allocation by assuming independent and identically distributed (i.i.d.) sub-channels in each Decode-and-Forward (DF) relay. To improve the wireless coverage, we extended the conventional two-hop system model to a three-hop structure without considering the effect of inter-relay interference. The structure can effectively overcome the transmission bottleneck in the conventional two-hop system. This paper also considered relay selection for the proposed cooperative transmission. In other words, depending on the quality of the sub-channels, each relay decides whether to forward data itself. The simulation results shows that the sum rate of the proposed algorithm monotonically increases with the increasing of both the power of each node and sub-channel numbers. Numerical results prove the goodness of the three-hop model in terms of sum rate and validate the proposed theoretical analysis.
UR - http://www.scopus.com/inward/record.url?scp=84893291239&partnerID=8YFLogxK
U2 - 10.1109/ICCChina.2013.6671140
DO - 10.1109/ICCChina.2013.6671140
M3 - Conference contribution
AN - SCOPUS:84893291239
SN - 9781479910335
T3 - 2013 IEEE/CIC International Conference on Communications in China, ICCC 2013
SP - 345
EP - 350
BT - 2013 IEEE/CIC International Conference on Communications in China, ICCC 2013
T2 - 2013 IEEE/CIC International Conference on Communications in China, ICCC 2013
Y2 - 12 August 2013 through 14 August 2013
ER -