摘要： 在分析长期演进计划及其增强系统的基础上，提出一种利用主同步信号估计干扰与噪声功率的方法。利用该方法估计当前同步子载波的信道系数，根据相邻子载波信道近似相等的特性，计算相邻同步子载波接收数据的估计值，将该估计值与实际接收数据的差值进行自相关，并通过统计平均得到干扰与噪声功率的估计值。仿真结果表明，在多径丰富的衰落信道场景下，与目前常用的循环前缀估计算法相比，该方法能较好地估计干扰和噪声功率。
关键词:
长期演进计划,
长期演进计划增强系统,
同步信号,
噪声估计,
干扰与噪声估计,
多径效应
Abstract: A method is proposed to estimate the interference and noise power using synchronization signal for Long Term Evolution (LTE)/Long Term Evolution-Advanced(LTE-A) systems. In this method, the channel coefficient of current subcarrier is estimated, and the estimated received signal of adjacent carrier is calculated based on the hypothesis that the channel coefficients of two adjacent carriers are nearly equal. Correlation of the difference value of the real received and the estimated value is performed with further expectation operations for estimation of interference and noise power. Simulation results show that proposed method performs better than conventional Cyclic Prefix(CP) algorithm in rich multipath fading scenarios, and the method can estimate interference and noise power well.
Key words:
Long Term Evolution(LTE),
Long Term Evolution-Advance(LTE-A) systems,
synchronization signal,
noise estimation,
interference and noise estimation,
multipath effect
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