TDD-HSDPA/SA系统中MCS选择机制的研究  

Investigation on MCS Selection Mechanisms in TDD-HSDPA/SA System

作　　者：李勇[1] 堵久辉[1] 王文博[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《北京邮电大学学报》2006年第2期114-117,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家"863计划"项目(2004AA123160)

摘　　要：结合智能天线分析了时分双工高速下行分组接入(TDD-HSDPA/SA)系统中导频信道与业务信道的信噪比特征,给出了适用时分调度TDD-HSDPA/SA系统的2种改进调制编码方案(MCS)选择机制:根据不同天线类型,在导频信道基础上对业务信道的信噪比先进行预测再进行MCS选择;或者将导频信道测量值与业务信道测量值相结合进行MCS选择.通过动态系统级仿真平台对各种MCS选择机制下的系统吞吐量及剩余误块率进行了对比和分析,仿真结果表明了改进的MCS选择机制在维持所需的剩余误块率的前提下,较大提高了系统吞吐量.Relations of signal-to-noise ratio between pilot channel and traffic channel in TDD-HSDPA/ SA （time division duplex-high speed downlink packet access/smart antenna） system was analyzed when smart antenna character was taken into account. Several improved MCS （modulation coding scheme） selection schemes for TDD-HSDPA/SA system based on slot scheduling were presented. In the improved schemes, MCS selection is performed based on pilot channel condition, with additional prediction according to different antenna types, or, in combination with traffic channel condition. A dynamic system level simulator was designed to analyze performance such as system throughput and residual block error ratio for each scheme. The simulation indicates that the improved mechanisms increase system throughput considerably while maintaining desired residual block error ratio.

关 键 词：移动通信 时分双工 高速下行分组接入 智能天线 调制编码方案 

分 类 号：TN929.53[电子电信—通信与信息系统]