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Performance Analysis of a Receive Diversity PLC System With Imperfect CSI in Nakagami-m Noise Environment
IEEE Communications Letters ( IF 4.1 ) Pub Date : 2021-03-04 , DOI: 10.1109/lcomm.2021.3064038
Jashaswini Bhuyan , Soumya P. Dash

The letter proposes a receive diversity PLC system subject to uncorrelated Rayleigh multipath channels and corrupted by Nakagami- $m$ background noise employing $M$ -ary phase-shift keying modulation for data transmission. The estimates of the channel gains are obtained prior to data transmission by the minimum mean square estimation technique utilizing pilot symbol transmission. A suboptimal receiver structure employing the maximum likelihood decision rule is proposed for the PLC system which is further used to obtain the closed form and the asymptotic expressions for the symbol error probability of the system via a characteristic function approach. The improvement of the system performance with the increase in the channel diversity, the effects of the pilot-to-signal strength ratio, and the noise shape parameter $m$ of the background noise on the system performance are studied via numerical results providing various insights into the design of the PLC system with various system parameters.

中文翻译:

Nakagami- CSI不完善的接收分集PLC系统的性能分析 噪音环境

这封信提出了一种接收分集 PLC 系统,该系统受不相关瑞利多径信道的影响并被 Nakagami- 百万美元 使用背景噪音 百万美元 用于数据传输的相移键控调制。信道增益的估计是在数据传输之前通过使用导频符号传输的最小均方估计技术获得的。针对PLC系统提出了一种采用最大似然判决规则的次优接收机结构,进一步利用特征函数方法得到系统符号错误概率的闭合形式和渐近表达式。随着信道分集的增加、导频信号强度比和噪声形状参数的影响,系统性能的提高 百万美元 通过数值结果研究了背景噪声对系统性能的影响,从而为具有各种系统参数的 PLC 系统的设计提供了各种见解。
更新日期:2021-03-04
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