DIRECT PRIMARY RECEIVER DETECTION WITH FREQUENCY MAPPING IN COGNITIVE RADIO

被引：0

作者：

Wang, Weidong ^{[1
]}

Li, Fan ^{[1
]}

Zhang, Yinghai ^{[1
]}

Wang, Shoufeng ^{[1
]}

Wang, Yongtao ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Informat & Elect Technol Lab, Beijing 100876, Peoples R China

来源：

PROCEEDINGS OF 2009 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS TECHNOLOGY AND APPLICATIONS | 2009年

关键词：

cognitive radio; receiver detection; direct detection; hidden terminal problem; interference;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A cognitive radio should avoid interference from secondary users to primary users. However, the unknown location of primary receiver makes the problem hard to solve. This paper proposes a novel primary receiver detection to change the passive state of primary receivers. Primary receiver informs the secondary user it's licensed receive frequency according to semaphore architecture via mapping method. The secondary user determines the spectrum holes by the semaphore. The algorithm of the mapping method and the semaphore transmitting power control are proposed. The analysis on the simulation results shows that the scheme can realize the detection of primary receiver, avoid interference and improve the spectrum utilization effectively.

引用

页码：493 / 499

页数：7

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