channel estimation error的意思|示意

Following is an analytical expression to calculate the BER of M-QAM under Rayleigh channel when channel estimation error exists.

提出了计算瑞利信道下存在信道估计误差时m - QAM的误比特率的解析表达式。

Finally, the adaptive resource allocation problem for the MIMO systems in the presence of channel estimation error is analyzed.

最后，对存在信道估计误差时MIMO系统中的自适应资源分配问题进行了研究。

The channel estimation method based on pilots has received much research. It adopts the algorithms such as least squares (LS), minimum mean square error (MMSE), maximum likelihood (ML), and so on.

基于导频的信道估计方法已经受到广泛的研究，主要估计算法有最小二乘法(LS)、最小均方误差法(MMSE)和最大似然(ML)估计法等。

At the same time, the channel estimation error, caused by the spectral leakage of DFT, can be reduced by canceling the auto-correlation error of the time-domain sequence of frequency-domain pilots.

同时，通过消除频域导频时域序列的自相关误差，能有效降低由DFT谱泄漏导致的信道估计误差。

Theoretical results of the lower bound of the bit error rate as well as the channel estimation error of the proposed algorithm were given.

从理论上分析了该算法所能达到的信道估计误差下限和比特误码率下限，并提出了最优叠加导频序列的设计准则。

To reduce this error, a recursive channel estimation algorithm was proposed to compensate the channel estimation of data field to increase the precision of the channel estimation of single timeslot.

为了降低这种误差，提出了循环迭代的算法，通过对数据域信道估计进行补偿，提高了单个时隙信道估计精度。