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학술지 RF Band-Pass Sampling Frontend for Multiband Access CR/SDR Receiver
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저자
김형중, 김진업, 김재형, 왕홍매, InSung Lee
발행일
201004
출처
ETRI Journal, v.32 no.2, pp.214-221
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.10.1409.0073
협약과제
09MR3900, 이동통신 무선접속방식의 환경 적응형 자율제어 기술 연구, 김진업
초록
Radio frequency (RF) subsampling can be used by radio receivers to directly down-convert and digitize RF signals. A goal of a cognitive radio/software defined ratio (CR/SDR) receiver design is to place the analog-to-digital converter (ADC) as near the antenna as possible. Based on this, a band-pass sampling (BPS) frontend for CR/SDR is proposed and verified. We present a receiver architecture based second-order BPS and signal processing techniques for a digital RF frontend. This paper is focused on the benefits of the second-order BPS architecture in spectrum sensing over a wide frequency band range and in multiband receiving without modification of the RF hardware. Methods to manipulate the spectra are described, and reconstruction filter designs are provided. On the basis of this concept, second-order BPS frontends for CR/SDR systems are designed and verified using a hardware platform. Copyright © 2010 ETRI.
키워드
Cognitive radio (CR), Mutliband access, RF subsampling, band-pass sampling, Software defined ratio (SDR)
KSP 제안 키워드
Analog to digital converter(ADC), Bandpass sampling, Digital RF, Hardware platform, RF front end, RF signals, Receiver architecture, Reconstruction filter, SDR receiver, Software-Defined, Spectrum Sensing