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

fYear

2009

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE

Conference_Location

Honolulu, HI

ISSN

1930-529X

Print_ISBN

978-1-4244-4148-8

Type

conf

DOI

10.1109/GLOCOM.2009.5426260

Filename

5426260