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首页> 外文会议>International Conference on Advanced Communication Technology >Effect of Channel Estimation Error on the Performance of Interleave-Division Multiple Access Systems
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Effect of Channel Estimation Error on the Performance of Interleave-Division Multiple Access Systems

机译：信道估计误差对交错多接入系统性能的影响

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摘要

The effect of channel estimation error on the performance of the Interleave-Division Multiple Access (IDMA) Systems are studied in this paper. For comparison, a channel estimation approach based on Expectation Maximization (EM) algorithm is also presented. The theoretic analysis and simulation results show that the variance of the channel estimation error affects the bit-error-rate (BER) performance of the IDMA system significantly when the estimation error is large. The analysis and simulation results also indicate that the channel estimation information based on EM algorithm can approach to the ideal channel state information (CSI) with increasing iterations. Therefore, the channel estimation can cooperate harmoniously with the signal detection due to the iterative operation. The analysis model and simulation results provide a reference for the practical system design.
机译：本文研究了信道估计误差对交织分割多址（IDMA）系统的性能的影响。为了比较，还呈现了一种基于期望最大化（EM）算法的信道估计方法。理论分析和仿真结果表明，当估计误差大时，信道估计误差的方差会影响IDMA系统的比特率（BER）性能。分析和仿真结果还表明，基于EM算法的信道估计信息可以通过增加迭代的理想信道状态信息（CSI）方法。因此，信道估计可以与由于迭代操作引起的信号检测和谐协作。分析模型和仿真结果为实际系统设计提供了参考。

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