摘要
TD-LTE系统可在TM7单流模式及TM8双流模式的基础上进一步引入增强的多天线技术,包括上行MU-MIMO和下行MU-MIMO算法。MU-MIMO算法将空间隔离度较好的一对用户进行配对,使两用户采用同一时频资源进行上行或下行传输,从而大幅提升上行或下行可用资源数量,提高双终端或小区的吞吐量性能。详细结合目前TD-LTE上行和下行MU-MIMO的设备实现,分析上行及下行MU-MIMO算法在外场测试的性能表现。
Based on TM7 single-stream and TM$ dual-stream transmission mode, multiple antenna enhancement technology can be introduced in TD-LTE system, including uplink MU-MIMO and downlink MU-MIMO. In MU-MIMO algorithm, two terminals with space division can be paired to share the same downlink resource blocks for uplink or downlink transmission. Due to the multiplexing of time-frequency resource, the valid transmission resource can be increased remarkably, thus the gain on dual-terminal throughput and the cell overall throughput performance can be obtained. Detailed analysis on field test of uplink and downlink MU-MIMO was given, based on the algorithm implement of TD-LTE network equipment vendors.
出处
《电信科学》
北大核心
2013年第5期63-67,共5页
Telecommunications Science
基金
"新一代宽带无线移动通信网"国家科技重大专项基金资助项目(No.2010ZX03002-009)
