Method for Hybrid Cooperative Sharing applied Automatic Request Protocol
Hyung-Yun Kong · 한국인터넷방송통신학회 논문지 · 2015
Abstract In cognitive radio networks, when the signal-to-noise ratio (SNR) of the link between a primary transmitter and receiver is sufficiently high, the primary transmission does not frequently demand cooperation because direct transmission of the primary communication is usually successful. Therefore, there are few opportunities for a secondary transmitter to cooperate with the primary user system in exchange for an opportunity to share the spectrum. This article proposes a scheme in which the secondary system can deliberately degrade the SNR of the primary transmission, making it so that the primary system needs cooperation from the secondary nodes, and thereby increases opportunities for spectrum sharing. Key Words : Cognitive Radio, Spectrum Sharing, Optimal Transmitting Power * 정회원, 울산대학교 전기전자정보시스템공학부접수일자 : 2014년 9월 24일, 수정완료 : 2014년 12월 25일 게재확정일자 : 2015년 2월 13일Received: 24 September, 2014 / Revised: 25 December, 2014 Accepted: 13 February, 2015 * Corresponding Author: [email protected] School of Electrical Engineering, University of Ulsan, Korea