论文部分内容阅读
对多输入多输出正交频分复用(MIMO-OFDM)蜂窝系统中的信道估计进行了研究,推导了用于多小区多天线的最优训练序列条件,给出了一种实用优选训练序列,并在此基础上提出了一种迭代信道估计算法.结果表明,所提出的迭代信道估计算法可以有效抑制同信道干扰对估计精度的影响,使该估计器具有更高的估计精度,在同信道干扰环境中性能更稳健,从而使接收机性能更靠近理想信道估计的性能.
The channel estimation in multiple-input multiple-output OFDM (Orthogonal Frequency Division Multiplexing) cellular system is studied, the optimal training sequence condition for multi-cell multi-antenna is derived, and a practical preferred training sequence , And based on which an iterative channel estimation algorithm is proposed.The results show that the proposed iterative channel estimation algorithm can effectively suppress the influence of co-channel interference on the estimation accuracy and make the estimator have higher estimation accuracy, Performance is more robust in the channel interference environment, so that receiver performance closer to the performance of the ideal channel estimation.