这篇文章建议关节的一个新算法为多用户多输入和多产量的隧道和搬运人频率偏移量(JCCFO ) 评价直角的频率部门 multiplexing (MIMO-OFDM ) 系统。一个最少的平方(LS ) 隧道评价和搬运人频率偏移量(CFO ) 关联评价在这贡献被联合。CFO 通常用乘许多在特殊同步训练序列被估计。在这贡献, CFO 评价被在交通时间许多基于飞行员符号利用隧道评价进一步改进。CFO 能首先从主要隧道评价被获得。然后与估计的 CFO 的知识,隧道评价能极大地被提高。计算机模拟结果显示建议 JCCFO 计划性能好。而且,计算复杂性是低的。
This article proposes a new algorithm of joint channel and carrier frequency-offset OCCFO) estimation for multi-user multi-input and multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems. A least square (LS) channel estimation and a carrier frequency offset (CFO) correlation estimation are combined in this contribution. CFOs are generally estimated using training sequences in a special synchronization timeslot. In this contribution, CFO estimation is further improved by taking advantages of channel estimation based on pilot symbols in traffic timeslots. The CFOs can be first obtained from the primary channel estimation. And then, with the knowledge of the CFOs estimated, channel estimation can be enhanced greatly. Computer simulation results indicate that the proposed JCCFO scheme is of good performance. Besides, the computational complexity is low.