CHEN Shu-ping, DU Jiu-hui, WANG Wen-bo. Performance analysis and improvement of link adaptation techniques in TDD-HSDPA/SA system[J]. 2006, (1): 124-131.
CHEN Shu-ping, DU Jiu-hui, WANG Wen-bo. Performance analysis and improvement of link adaptation techniques in TDD-HSDPA/SA system[J]. 2006, (1): 124-131.DOI:
TDD-HSDPA/SA系统链路自适应技术性能分析及改进
摘要
理论分析了链路自适应技术在TDD-HSDPA/SA系统中遇到的信道质量波动较为严重的问题
提出了两种改进方案
通过动态系统级仿真进行了仿真研究
结果表明这两种方案可显著改进系统剩余误块率
并提升系统吞吐量。第一种方案更适用于TDD/FDD系统混合组网的情况
第二种方案适用于TDD系统单独组网的情况。
Abstract
The wireless channel fluctuation resulted from smart antennas in TDD-HSDPA/SA(time division duplex-high speed downlink packet access /smart antennas)system
which caused traditional link adaptation technologies invalid
was theoretically investigated.Two kinds of novel link adaptation schemes were proposed to deal with this issue.A dynamic system level simulator was established to evaluate the performances of the two schemes.Simulation results indicate that both of them have great improvement in system residual BLER and have certain system throughput gain.The first one suits for the hybrid networking case of TDD and FDD(frequency division duplex)mode
while the second one can serve the case of alone TDD networking.