Mitigation of spectral leakage for single carrier, block-processing cognitive radio receivers

作     者：Adam C. Polak Mark Wagner Marco F. Duarte Robert W. Jackson Dennis L. Goeckel 

作者机构：Electrical and Computer Engineering Department University of Massachusetts Amherst United States 

出 版 物：《Digital Communications and Networks》 (数字通信与网络（英文版）)

年 卷 期：2018年第4卷第2期

页      面：106-110页

核心收录：

学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0839[工学-网络空间安全] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 0835[工学-软件工程] 081001[工学-通信与信息系统] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：Spectral leakage Dynamic range Single carrier block transmission Interference White space Cognitive radio 

摘      要：Cognitive Radio （CR） is a multiuser, wireless communication concept that allows for a dynamic and adaptive assignment of spectral resources. The coexistence of multiple users, often transmitting at significantly different power levels, makes CR receivers vulnerable to spectral leakage caused by components＇ nonlinearities and timetruncation of the processed signal records. In this work we propose a method for mitigating the latter with an adaptive choice of the length of the processing block size. With simulations we show that a significant leakage reduction that leads to receiver dynamic range improvement of around 10 dB can be achieved with the proposed method.