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Mode Detection and Synchronization for an OFDM-Based Cognitive Radio with Fractional Bandwidth Mode  

Won, Jae-Yeon (경희대학교 전자전파공학과)
Kim, Yun-Hee (경희대학교 전자전파공학과)
Hwang, Sung-Hyun (한국전자통신연구원 인지무선연구팀)
Um, Jung-Sun (한국전자통신연구원 인지무선연구팀)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.11C, 2007 , pp. 1095-1101 More about this Journal
Abstract
For the cognitive radio (CR) systems sharing the spectrum with narrowband primary devices, this paper presents a fractional bandwidth (FBW) mode utilizing a variable portion of the system band to avoid the interference to or from the primary devices. For the method, the preamble and FBW mode detection algorithm are provided to obtain the FBW mode information during the synchronization. Simulation results in wireless regional area network (WRAN) environments reveal that the FBW mode can be detected reliably without any deterioration of the synchronization performance.
Keywords
WRAN; OFDM; Fractional Bandwidth Mode; Synchronization;
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