论文部分内容阅读
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.
To further understand the role of carrier frequency offset and channel estimation bias in space-dependent multi-user MIMO-OFDM system, the performance of uplink multi-user MIMO-OFDM system with carrier frequency offset and channel estimation bias is analyzed and simulated. The signal-to-interference and noise ratio expressions of effective data symbols in space-dependent multi-user MIMO-OFDM systems under carrier frequency offset and channel estimation bias are deduced, and the symbol error performance index of multiuser MIMO-OFDM system is given. The results of systematic symbol error performance of theoretical calculation and computer simulation are in good agreement with the cases of various carrier frequency deviations and channel estimation deviations.