Title :
Throughput and delay performance with a cooperative retransmission scheme using distributed beamforming
Author_Institution :
Dept. of Electron. Eng., Kyungil Univ., Gyeongan, South Korea
Abstract :
In this paper, an efficient retransmission scheme using co operation from neighboring nodes is investigated. In the cooperative retransmission scheme, an erroneous packet is retransmitted to the destination by cooperative nodes where distributed beamforming is used to accommodate multiple cooperating nodes. A Markov model is used to analyze throughput efficiency and average delay of the proposed retransmission scheme. It is shown that the analytical results are well matched with the simulated results and improved throughput and delay performance can be achieved as compared to the traditional retransmission scheme. The performance of the proposed cooperative retransmission is investigated in the multi hop configuration via computer simulation. The transmit power for retransmission packet is also investigated and it can be significantly reduced by using a small feedback channel.
Keywords :
Markov processes; array signal processing; cooperative communication; Markov model; computer simulation; cooperative nodes; cooperative retransmission scheme; delay performance; distributed beamforming; erroneous packet; feedback channel; multihop configuration; neighboring nodes; retransmission packet; throughput efficiency; transmit power; Analytical models; Automatic repeat request; Delay; Markov processes; Random variables; Signal to noise ratio; Throughput; Cooperative communications; Markov model; distributed beamforming; packet retransmission;
Journal_Title :
Communications and Networks, Journal of
DOI :
10.1109/JCN.2011.6157449