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基于交替线性输出均衡器的单天线干扰消除和自适应技术
许翰1, 陈皓瑜2, 周小林1
1.复旦大学 信息科学与工程学院, 上海 200433;2.联芯科技有限公司 运营管理部, 上海 201206
摘要:
在全球移动通信系统(GSM)下行链路中引入一种新型的单天线干扰消除(SAIC)算法,插入交替线性输出均衡器(ALOE)滤波模块,无需变动传统接收机链路结构即可实现良好的同频干扰消除.同时针对邻频干扰和复杂干扰环境,引入一种基于功率谱估计的邻频自适应检测方法.相比传统的能量噪声估计方法,该方法结构更为简单,复杂度更低,能有效提升接收机面对各种场景的适应能力.仿真结果表明,该技术能够在多模芯片中,以较低的复杂度、较好地提升系统的抗同频干扰和邻频干扰的能力,从而提高2G网络话音通信的质量.
关键词:  全球移动通信系统  单天线干扰消除  同频干扰  邻频干扰  交替线性输出均衡器
DOI:10.3969/J.ISSN.1000-5137.2017.01.023
分类号:
基金项目:国家科技支撑课题项目(2015BAD17B04)
A single antenna interference cancellation and adaptive technique based on ALOE
Xu Han1, Chen Haoyu2, Zhou Xiaolin1
1.School of Information Science and Technology, FUDAN University, Shanghai 200433;2.Department of Operations Management, Leadcore Technology CO., LTD, Shanghai 201206
Abstract:
A new type of single antenna interference cancellation (SAIC) algorithm based on ALOE filtering module is introduced for co-channel interference cancellation in GSM/GPRS/EDGE downlink without changing the link structure of traditional receiver.Meanwhile,an adjacent frequency adaptive detection based on power spectrum estimation method is introduced to solve adjacent frequency interference and complex interference.Compared with traditional energy noise estimation method,the new method has simpler structure,less complexity,and can effectively improve the adaptability for various scenarios.The simulation results show that it can raise the resistance to co-channel frequency interference and adjacent frequency interference in multimode chips with low complexity,which improves the quality of 2G voice communication.
Key words:  GSM  SAIC  co-channel and adjacent frequency interference  ALOE