A New Method of Interference and Noise Power Estimation in LTE

doi:10.3969/j.issn.1000-3428.2013.12.017

Computer Engineering

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A New Method of Interference and Noise Power Estimation in LTE

CHEN Yong-ling ^1,2, HU Hong-lin ^1,2,3,4, YANG Xiu-mei ^1,2,3,4

(1. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; 2. Shanghai Research Center for Wireless Communications, Shanghai 200335, China; 3. Key Laboratory of Wireless Sensor Network & Communications, Chinese Academy of Sciences, Shanghai 200335, China; 4. Shanghai Internet of Things Company, Shanghai 201800, China)

Received:2012-10-17 Online:2013-12-15 Published:2013-12-13

LTE中一种新的干扰与噪声功率估计方法

陈永岭^1,2，胡宏林^1,2,3,4，杨秀梅^1,2,3,4

(1. 中国科学院上海微系统与信息技术研究所，上海 200050；2. 上海无线通信研究中心，上海 200335； 3. 中国科学院无线传感网与通信重点实验室，上海 200335；4. 上海物联网公司，上海 201800)

作者简介:陈永岭(1987－)，男，硕士研究生，主研方向：信号处理，LTE物理层关键技术；胡宏林，研究员、博士；杨秀梅，助理研究员、博士
基金资助:
上海市科委科技创新行动计划基金资助项目(11DZ1500201)；上海市启明星计划基金资助项目(11QA1406300)；上海市科委国际合作计划基金资助项目(11220705400)；工信部科技重大专项计划基金资助项目(2012ZX03003009-003)

Abstract

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

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

CLC Number:

TP391

CHEN Yong-ling, HU Hong-lin, YANG Xiu-mei. A New Method of Interference and Noise Power Estimation in LTE[J]. Computer Engineering.

陈永岭，胡宏林，杨秀梅. LTE中一种新的干扰与噪声功率估计方法[J]. 计算机工程.

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URL:

https://www.ecice06.com/EN/Y2013/V39/I12/79

References

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