naa a22 4500 510796249 CHVBK 20180411083337.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11277-012-0534-5 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0534-5 A Guard Band Decision Algorithm Based on Information of Spectrum Masks for OFDM-Based CR Systems [Elektronische Daten] [Byung Lee, Youngok Kim] In the cognitive radio (CR) systems supporting multiple wireless services, the performance of a communication system can be significantly degraded by an adjacent channel interference (ACI) from a neighbor wireless system located in the adjacent channel. A guard band (GB) is generally used to avoid the ACI, but its bandwidth is carefully decided for efficient usage of spectrum. Furthermore, an adjustable GB instead of the conventional fixed GB can be a more effective scheme since the services in the adjacent channel can be frequently changed in the CR systems. In this paper, a practically adjustable GB decision algorithm based on the information of spectrum masks is proposed for the Orthogonal frequency division multiplexing-based CR systems. The spectrum splatter from the neighbor system is analyzed and the proposed scheme is derived with the analytic results and the inverse closed-form of well-known theoretical BER performance. The effectiveness of proposed algorithm is verified by simulation results. Springer Science+Business Media, LLC., 2012 Orthogonal frequency division multiplexing (OFDM) nationallicence Cognitive radio nationallicence Adjacent channel interference nationallicence Guard band nationallicence Lee Byung Central R&D Laboratory, Korea Telecom (KT), 137-792, Seoul, Korea aut Kim Youngok Department of Electronic Engineering, Kwangwoon University, 139-701, Seoul, Korea aut Wireless Personal Communications Springer US; http://www.springer-ny.com 68/4(2013-02-01), 1463-1476 0929-6212 68:4<1463 2013 68 11277 https://doi.org/10.1007/s11277-012-0534-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0534-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lee Byung Central R&D Laboratory, Korea Telecom (KT), 137-792, Seoul, Korea aut NATIONALLICENCE 700 1- Kim Youngok Department of Electronic Engineering, Kwangwoon University, 139-701, Seoul, Korea aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 68/4(2013-02-01), 1463-1476 0929-6212 68:4<1463 2013 68 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer