中文摘要：

提出了多业务组播系统中最大化系统吞吐量的自适应子载波和功率分配算法.根据各组播业务的数据率要求进行业务间功率和子载波的分配,达到业务间公平性的目标;设计了子载波协作传输方案及其简化方案来传输数据,在保证订阅相同业务各用户间公平性的同时提高了系统容量;对每个组播业务进行子载波间的功率调整,进一步增强系统容量.仿真结果显示,所提出的多播算法在保证业务间公平和订阅相同业务的用户间公平的条件下,显著地增大了系统容量.

英文摘要：

To maximize the system throughput,a subcarrier and power allocation scheme for multi-service multicast system is proposed.The new scheme works in three steps.Firstly,to ensure the fairness among services,subcarrier and power allocation among services is performed according to the target data rate of each service;Secondly,to maximize the system throughput while ensure the fairness among users with the same service,a subcarrier cooperation scheme and a simplified scheme are derived;Finally,the waterfilling method is adopted to get further capacity improvement.Simulation results show that the proposed scheme can significantly improve the system throughput,while ensure the fairness among multicast services and among users with the same service.