A novel Nyquist window for OFDM-based cognitive radio systems

被引：0
|
作者：
Yang, Ziyuan [1 ]
Zhang, Haixia [1 ]
Yuan, Dongfeng [1 ]
Bai, Zhiquan [1 ]
Kwak, Kyungsup [2 ]
机构：
[1] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Shandong, Peoples R China
[2] Univ Incheon, UWB Wireless Commun Res Ctr INHA UWB ITRC, INHA, Incheon, South Korea
来源：
2008 3RD INTERNATIONAL CONFERENCE ON COGNITIVE RADIO ORIENTED WIRELESS NETWORKS AND COMMUNICATIONS | 2008年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Cognitive radio (CR) is one of the important paradigms proposed by FCC for improving the spectrum utilization. To make agile spectrum resources allocation between the primary users (PUs) and the secondary users (SUs), Orthogonal Frequency Division Multiplexing (OFDM) has been taken as one of the potential modulation candidates in the physical layer in CR. This paper presents a mathematical model for measuring the interference in the windowed OFDM systems. Additionally, we introduce a novel optimized Nyquist window approach to decrease the out-of-band radiation, such that the interference to the adjacent non-orthogonal users can be avoided. Both theoretical analysis and numerical results show the performance enhancement of the proposed scheme.
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页码：245 / +
页数：2
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