ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술대회 Automatic Gain Control for Interoperability in OFDM Systems
Cited 0 time in scopus Download 1 time Share share facebook twitter linkedin kakaostory
저자
황현구, 김대호
발행일
201006
출처
International Wireless Communications and Mobile Computing Conference (IWCMC) 2010, pp.366-370
DOI
https://dx.doi.org/10.1145/1815396.1815481
협약과제
10MI1100, 4세대 이동통신을 위한 적응 무선접속 및 전송 기술개발, 김영진
초록
This paper presents interoperable Automatic Gain Control (AGC) algorithm in wireless Orthogonal Frequency Division Multiplexing (OFDM) system such as WLAN, WMAN, 3G-LTE [1]. We first analyze the method of AGC using received power in general OFDM systems. The analysis will show that the gain value largely fluctuates with presence or structure of signals. This fluctuation of gain is generated by the variation of received signal power that varies with presence of packet. We show how proposed algorithm can reduce the fluctuation of gain value. Results of simulation show that the utilization of proposed algorithm can reduce the fluctuation of gain value considerably. As a result, proposed AGC algorithm that can be used various communication systems can increase bit resolution of received signal because of reduction of gain fluctuation. Especially, OFDM system with high Peak to Average Power Ratio (PAPR) or 16-QAM and 64-QAM modulation schemes for high data rate transmission is sensitive to bit resolution, therefore proposed AGC algorithm supports to keep system performance stable in various communication systems. Copyright © 2010 ACM.
키워드
AGC, Envelope distribution, Gain fluctuation, Interoperability, OFDM, PAPR
KSP 제안 키워드
16 quadrature amplitude modulation(16QAM), 3G LTE, 64-QAM, Automatic Gain Control(AGC), Communication system, Envelope distribution, Modulation scheme, Orthogonal frequency division multiplexing (OFDM) system, Peak to average Power ratio(PAPR), QAM modulation, Received power