Static Throughput Optimal Scheduling for Wireless Multicast
wireless multicast can exploit both multiuser diversity and broadcast gain together simultaneously, which are the special virtues of wireless communication. However, we have to adopt appropriate tradeoff between multiuser diversity gain and broadcast gain in order to achieve optimal system throughput. This paper studied the problem of wireless multicast scheduling, and proposed a static optimal wireless scheduling algorithm which achieve optimal throughput in sense of probability. This scheme determines the optimal threshold of the channel gain and the optimal number of active users according to the probability distribution function of the envelope of the fading channel. The system throughput of the scheme can approach the upper bounder of system throughput if the number of the system is large enough. Only when the average SNR (signal to noise ratio) changes the scheme has to adjust the multicast threshold and number of users. It has a very low complexity, and is easy to implement At last, we prove the proposed algorithm achieve higher system throughput than other multicast algorithms by simulations.
wireless multicast multiuser diversity scheduling througput optimal
Jiang Yu Youyun Xu Wei Xie
Department of Wireless Communication Institute of Communications Engineering,PLA University of Science and Technology Nanjing,China
国际会议
2009 First International Conference on Future Information Networks(第一届未来信息网络国际会议)
北京
英文
146-149
2009-10-14（万方平台首次上网日期，不代表论文的发表时间）