摘要
为进一步了解载波频偏和信道估计偏差在空相关多用户MIMO-OFDM系统中的作用,对存在载波频偏和信道估计偏差影响的上传多用户MIMO-OFDM系统的性能进行了解析和仿真研究.推导了在载波频偏和信道估计偏差影响下的空相关多用户MIMO-OFDM系统的有效数据符号的信号干扰噪声比表达式,给出了多用户MIMO-OFDM系统的符号差错性能指标.研究表明,理论计算与计算机仿真的系统符号差错性能结果在各种载波频偏和信道估计偏差情况下都比较吻合.
The performance of the spatially correlated multiuser multiple-input multiple-output orthogonal frequency division multiplexing （MIMO-OFDM） systems in the presence of carrier frequency offset and channel estimation error was analyzed and simulated to further understand effects of carrier frequency offset and channel estimation error on the performance of spatially correlated multiuser MIMO-OFDM systems. The results of performance degradation of the spatially correlated multiuser MIMO-OFDM systems between theoretical calculations and computer simulations match well in the presence of various carrier frequency offsets and channel estimation errors.
出处
《大连海事大学学报》
EI
CAS
CSCD
北大核心
2008年第1期67-70,共4页
Journal of Dalian Maritime University
基金
国家自然科学基金资助项目(6060202160772119)
教育部高等学校博士学科点专项科研基金资助项目(20060151001)
辽宁省自然科学基金资助项目(20072147)
大连市优秀青年科技人才基金资助项目(2006J23JH037)
移动通信国家重点实验室开放课题基金资助项目(A200606)
关键词
空相关
多输入多输出
正交频分复用
载波频偏
信道估计偏差
spatially correlation
multiple-input multiple-output
orthogonal frequency division multiplexing
carrier frequency offset
channel estimation error
