摘要
LTE系统支持上行多用户MIMO,采用多用户MIMO时不同用户的参考信号资源映射位置完全重叠,这给信号估计带来一定的困难。针对上述场景利用Zadoff-Chu序列的性质提出了一种多用户MIMO场景下基于DFT的信道估计算法。该算法能够有效地区分不同用户的参考信号并通过去噪声、减小边缘效应等手段使得信道估计有较好的效果,提升了用户的检测性能。
Uplink MU-MIMO can be used in LTE system. When used, the reference signals of different users are completely overlapped. This results in some difficulties to realize channel estimation. In this paper, a DFT-based channel estimation algorithm is proposed, which can separate the reference signals of different users using the properties of Zadoff-Chu sequences. The simulation result shows that the performance is efficient.
出处
《电视技术》
北大核心
2014年第11期147-149,153,共4页
Video Engineering
基金
国家科技重大专项基金资助项目(2013ZX03003015-003)
