摘要
衰落信道参数估计是无线信道传输系统中的关键技术。首先建立了噪声条件Nakagami-m分布模型,提出了一种基于高阶矩的Nakagami-m参数估计方法。该方法利用了高阶矩具有检测高斯分布特性的特点,用以识别衰落信道的属性。理论分析和仿真试验均证明了新方法的可行性和有效性,并对矩估计方法的计算复杂度进行了分析,从理论上证明其运算量低于最大似然估计方法。
The estimation of fading channel parameters is one key technique in wireless channel transmission system. This paper establishes an model based on Nakagami - m distribution in noise condition, and presents a Nakagami m parameter estimation based on higher order moments. This method utilizes such characteristic of higher order moments as detection Gaussian distribution feature to identify the property of fading channel. The theoretical analysis and experimental results prove the feasibility and effectiveness of the new method. The computational complexity for moment - based estimation is analyzed, and it was proved mathematically that its computational complexity is lower than maximum -likelihood estimator.
出处
《无线电通信技术》
2012年第2期13-16,共4页
Radio Communications Technology
