Title :
Bandpass Sampling Digital Frontend Architecture for Multi-Band Access Cognitive Radio
Author :
Kim, Jae-Hyung ; Wang, Hongmei ; Kim, Hyung-Jung ; Kim, Jin-up
Author_Institution :
Sch. of Mechatron. Eng., Changwon Nat. Univ., Changwon, South Korea
Abstract :
Bandpass sampling (BPS) theory enables the conversion of RF frequency directly down to baseband, which is a significant technique in cognitive radio (CR) systems because they require flexibility in RF frontend. Based on this concept, second-order BPS frontends for CR systems are designed and verified by using a hardware platform. The methods adopted to manipulate spectrums to remove aliasing and images are described, and the equations employed to design interpolants are provided. The results of experiment indicate that the proposed second-order BPS frontends can realize universal access and environment sensing functionalities in CR systems.
Keywords :
cognitive radio; interpolation; multi-access systems; signal sampling; RF frequency; aliasing removal; bandpass sampling digital frontend architecture; hardware platform; multiband access cognitive radio system; second-order BPS frontends; Band pass filters; Bandwidth; Baseband; Chromium; Cognitive radio; Hardware; RF signals; Radio frequency; Sampling methods; Signal sampling;
Conference_Titel :
Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-4148-8
DOI :
10.1109/GLOCOM.2009.5426260
