基于SIR和语音业务优先级的联合功率/速率控制  

SIR and priority-based combined power and rate control

作　　者：张艳荣[1] 范平志[2] 

机构地区：[1]西南交通大学机械学院测控中心,四川成都610031 [2]西南交通大学移动通信研究所,四川成都610031

出　　处：《电路与系统学报》2010年第1期120-124,共5页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(90604035)

摘　　要：本文针对综合语音和数据蜂窝系统的上行链路,提出了一种基于SIR和语音业务优先级的联合功率和数据速率控制算法(SIRPBCPRC)。该算法是一种分布式算法,容易实现;并且在进行资源分配时考虑了语音业务的实时性,给予语音用户更高的优先级。理论分析和仿真表明,SIRPBCPRC方案通过降低数据用户数据速率和发射功率来减少对语音用户的干扰,从而降低了语音用户的中断概率,达到语音业务的通信质量要求。同时,由于CDMA系统是干扰受限系统,所以采用该算法时,随着数据用户产生的干扰的降低,语音用户的发射功率也会随之降低。In this paper, an SIR and priority based combined power and rate control （SIRPBCPRC） algorithm is proposea for the uplink of a cellular system with integrated voice and data traffic. SIRPBCPRC can be realized easily as it is a distributed algorithm. Moreover, when allocating system resources, all voice users are assigned higher priority based on the real-time characteristics of voice service. Theoretical analysis and simulation results demonstrate that the proposed algorithm deereaso~ interference to voice users by decreasing data users＇ transmission rates and powers, as a result, the outage probability of the voice users are decreased to satisfy with QoS of voice service. Meantime, because CDMA system is an interference limited system, transmission powers of voice users decrease with decreasing of interference caused by data users.

关 键 词：联合功率和速率控制 SIRPBCPRC 数据速率 发射功率 中断概率 

分 类 号：TN929.533[电子电信—通信与信息系统]