A Novel Cooperative Multicast Scheme Based on Fountain Code

Qinghe Du, Pinyi Ren, Jincheng Lu, Zhigang Chen

School of Electronic and Information Engineering, Xi’an Jiaotong University, China.
School of Electronic and Information Engineering, Xi’an Jiaotong University, China; National Mobile Communications Research Laboratory, Southeast University, China.

DOI: 10.4236/cn.2013.53B2028                

Abstract

Multicast is an efficient way to support emerging multimedia services over wireless network. Fountain codes are used in multicast systems to enable a robust transmission without CSI feedback and ARQ. We propose a cooperative multicast scheme based on fountain code to improve the performance of multicast. The users are coordinated with each other to decode the message at different time slots within the data transmission of a multicast session. Speci?cally, we take the local channel state information (CSI) and the local residual energy information (REI) into consideration, and apply a relay-selection and power-allocation strategy in our cooperative multicast scheme to prolong the network lifetime, while keeping the transmission delay as low as possible. The simulation results show that the proposed scheme can achieve a good tradeoff between transmission delay and network lifetime.

Keywords

Cooperative Multicast; Fountain Code; Residual Energy; Lifetime

Conflicts of Interest

The authors declare no conflicts of interest.

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