지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- Korean Institute of Information Scientists and Engineers Journal of Electrical Engineering and Information Science Journal of Electrical Engineering and Information Science Vol.2 No.1
- 발행연도
- 1997.2
- 수록면
- 28 - 33 (6page)
이용수
초록· 키워드
오류제보하기
In this paper, the reverse link structure of a wideband CDMA is introduced. The pilot signal is used to perform the coherent demodulation and code synchronization in the reverse channel. The phase estimation and data demodulation in the pilot-aided QPSK modulation are described. The orthogonal Walsh codes are used to separate both the pilot and traffic channels. The phase is estimated by accumulating N_ρ chips and normalizing its amplitude. Because the pilot signal causes interference against the traffic channel, its power level should be optimized to ensure both coherent demodulation and minimum interference. We modeled the reverse link and analyzed BER performance in AWGN and Rayleigh fading channel according to the ratio of the pilot power to traffic power. Theoretical analysis shows that BER performance is approximately the same as coherent demodulation if the ratio of total pilot energy to traffic energy is larger than 4. Also simulation result provides optimal accumulation length N_ρ for low gain of pilot signal in reverse channel.
목차
Abstract
Ⅰ. Introduction
Ⅱ. Pilot Aided QPSK Modulation Model
Ⅲ. Coherent Demodulation Process
Ⅳ. BER Analysis in A WGN and Ralyleigh Fading Channel
Ⅴ. Simulation Results
Ⅵ. Conclusions
References
저자소개
참고문헌 (0)
참고문헌 신청함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
Coherent Demodulation Performance of Pilot Aided QPSK Modulation in Wideband CDMA Reverse Channel
Journal of Electrical Engineering and information Science
1997 .02
-
Pilot Aided QPSK Demodulation in Wideband CDMA Reverse Channel
한국정보과학회 학술발표논문집
1997 .04
-
Pilot Aided QPSK Demodulation in Wideband CDMA Reverse Channel
대한전자공학회 학술대회
1997 .01
-
PILOT-AIDED REVERSE LINK PERFORMANCE ANALYSIS OF A WIDEBAND CDMA
대한전자공학회 워크샵
1996 .01
-
Channel Estimation Based on Pilot and Data Traffic Channels for DS / CDMA Systems
대한전자공학회 학술대회
1998 .01
-
CDMA 시스템의 역방향링크에서 동기식 QPSK 변복조기의 성능분석 ( Performance Comparison of Pilot Symbol Aided Coherent QPSK Modulation for Reverse Link in a CDMA System )
한국통신학회 학술대회논문집
1996 .01
-
Pilot Assisted Coherent CDMA System-Some Extended Results
CDMA International Conference and Exhibition
1998 .01
-
DS/CDMA 시스템을 위한 새로운 복조 방식
전기전자학회논문지
1998 .12
-
HD-Radio 와 DAB 시스템의 성능비교
대한전자공학회 학술대회
2010 .06
-
파일럿 채널을 이용한 수신 데이터 복조 성능향상 방법 연구
대한전자공학회 학술대회
2009 .07
-
Pilot Symbol Aided Dual-Channel QPSK ( PSADC QPSK ) for CDMA Reverse Links
CDMA International Conference and Exhibition
1997 .01
-
PERFORMANCE COMPARISON OF QPSK MODULATION SCHEMES IN A CDMA REVERSE LINK
대한전자공학회 워크샵
1996 .01
-
이동통신환경에서 축적복조방식을 이용한 ∏/4 QPSK 성능분석 ( Performance analysis of ∏/4 QPSK for store and demodulation in mobile communications environment )
대한전자공학회 학술대회
1996 .01
-
파일럿 채널을 이용한 수신 데이터 복조 성능향상 방법 연구
대한전자공학회 학술대회
2009 .07
-
A NEW SCHEME FOR RAPID CDMA PILOT CHANNEL ACQUISITION
Asia-Pacific Conference on Communications
1995 .01
-
Modulation and Demodulation Characteristics of Orthogonal Coding Multi-carrier CDMA Scheme
대한전자공학회 워크샵
1996 .01
-
IEEE 802.16 기반의 무선 메쉬 네트워크에서 고속 무선 채널을 고려한 파일럿 구조
대한전자공학회 학술대회
2015 .06
-
Channel Estimation with Pilot Systems in Multi-Carrier CDMA System
CDMA International Conference and Exhibition
1998 .01
-
Data Symbol Aided Frequency Estimator for the Reverse Link Coherent DS-CDMA System
CDMA International Conference and Exhibition
1997 .01
이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2009-569-017764073