一种新的IQ不平衡频域估计与补偿算法

doi:10.11959/j.issn.1000-0801.2016176

电信科学 ›› 2016, Vol. 32 ›› Issue (8): 104-109.doi: 10.11959/j.issn.1000-0801.2016176

一种新的IQ不平衡频域估计与补偿算法

倪文杰^1,²,曹伟³,康凯³

¹ 上海大学通信与信息工程学院，上海 200072
² 中国科学院上海微系统与信息技术研究所，上海 200050
³ 上海无线通信研究中心，上海 201220

出版日期:2016-08-20 发布日期:2017-04-26
基金资助:
上海市科学技术委员会科研计划项目

A novel frequency-domain IQ imbalance estimation and compensation algorithm

Wenjie NI^1,²,Wei CAO³,Kai KANG³

¹ Institute of Communication and Information Engineering，Shanghai University，Shanghai 200072，China
² Shanghai Institute of Microsystem and Information Technology，Shanghai 200050，China
³ Shanghai Research Center for Wireless Communications，Shanghai 201220，China

Online:2016-08-20 Published:2017-04-26
Supported by:
The Scientific Research Project for the Science and Technology Commission of Shanghai Municipality

摘要/Abstract

摘要：

针对正交频分复用（OFDM）系统中射频前端失真—同相/正交（IQ）不平衡影响系统性能的问题，提出了一种新型的IQ不平衡频域估计与补偿算法。通过同一个子载波上的两个不同导频信号，抵消信道的影响，以减小算法复杂度，便于实现。仿真结果表明，该算法既极大地降低了计算量，又取得了较好的估计与补偿性能，性能优于传统的算法。

关键词: OFDM, IQ不平衡, 复杂度

Abstract:

To solve the problem of deterioration of system performance for the RF front-end distortion and IQ imbalance in orthogonal frequency division multiplexing（OFDM）system，a novel IQ imbalance frequency domain estimation and compensation algorithm was proposed.The effect of channel could be offset，the complexity of algorithm could be reduced and the implemention conld be achieved easily using two different pilot signals on one sub-carrier.The simulation results show that the algorithm not only greatly reduces the computational complexity，but also gets a better estimation and compensation performance，and the performance is better than traditional algorithms.

Key words: OFDM, IQ imbalance, complexity

倪文杰,曹伟,康凯. 一种新的IQ不平衡频域估计与补偿算法[J]. 电信科学, 2016, 32(8): 104-109.

Wenjie NI,Wei CAO,Kai KANG. A novel frequency-domain IQ imbalance estimation and compensation algorithm[J]. Telecommunications Science, 2016, 32(8): 104-109.

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参考文献 10

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一种新的IQ不平衡频域估计与补偿算法

A novel frequency-domain IQ imbalance estimation and compensation algorithm

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