摘要
针对基于多入多出技术和正交频分复用技术(MIMO-OFDM)相结合的分布式系统能够很好的利用多径效应提高天线分集接收性能的特性,提出一种基于IEEE802.16m的分布式MIMO-OFDM系统频偏估计方案,给出分布式MIMO-OFDM系统中抗多天线干扰的解决方法,并对原有频偏估计算法进行改进。在MIMO-OFDM系统环境下的仿真结果显示,改进算法可降低算法复杂度,其总体性能相对于传统算法有较大改善。
Since the MIMO-OFDM distributed system can more efficiently use the multipath effect to improve antenna diversity of receiving performance,a frequency offset estimation scheme for distributed MIMO-OFDM system is proposed based on IEEE802.16m.It gives ways for distributed MIMO-OFDM system to solve the problems of resisting multiple antenna interference,and improves the original frequency offset estimation algorithm.The simulation results under the environment of distributed MIMO-OFDM system shows that the meliorated algorithm can reduce the complexity algorithm complexity,and its overall performance is largely improved compared with the original one.
出处
《西安邮电学院学报》
2012年第1期47-51,共5页
Journal of Xi'an Institute of Posts and Telecommunications
关键词
多入多出
正交频分复用
频偏估计
多天线干扰
multiple-input multiple-output
orthogonal frequency division multiplexing
frequency offset estimation
multi-antenna interference
