科技广场Issue(1)：82-87,6.
TD-LTE-A系统中波束赋形权值PMI量化仿真研究
Simulation Research on PMI-Quantization of Beamforming for TD-LTE-A
摘要
Abstract
In order to reduce the difficulty of downlink beamforming in TD-LTE-A system, a PMI-quantized dual-stream beamforming method is proposed by using the idea of maximizes effective power of transmitted sig-nals. Beamforming weights are quantified by constructing codebooks based on PMI. And searching schemes are designed for selecting the optimal weights to compensate for the fading and distortion of the signal according to the reciprocal channel estimation information of TDD. And then a simulation platform based on matlab is built for re-searching the correlation of power and weight. Simulation results show that weight PMI-quantization can be real-ized in beamforming. Due to the existence of quantization error, the PMI-quantization scheme has some perfor-mance loss compared with the SVD algorithm. However, with the increase of the amount of codebooks and search-ing schemes, the performance of PMI is close to the SVD algorithm. The simulation results provide important ref-erence for the implementation of beamforming in real scene.关键词
增强时分双工长期演进系统/波束赋形/奇异值分解/预编码矩阵指示量化/系统仿真Key words
TD-LTE-A/Beamforming/SVD/PMI-Quantization/System Simulation分类
信息技术与安全科学引用本文复制引用
邵健,曾召华..TD-LTE-A系统中波束赋形权值PMI量化仿真研究[J].科技广场,2016,(1):82-87,6.基金项目
陕西省科技计划工业攻关项目（编号2014K06-37）；陕铁院研究生基金项目 （）
