Physical Uplink Control Channel (PUCCH) is an important narrow-band channel in LTE-Advanced system, which carries the uplink control information, such as acknowledge/non-acknowledge (ACK/NACK) bits, downlink channel quality indicator (CQI), HARQ-ACK feedback information, and it requires much higher transmission quality than the other channels. With the aid of orthogonal CDMA, multiple users share the same time-frequency resource, the multiuser interference has been the main factor that limits the transmission quality of the control information [1]. In the high-speed mobile scenario, there exists a large Doppler frequency shift, which leads to loss of code orthogonality and also introduces inter-carrier interference (ICI) within a single SC-FDMA symbol. Besides, the multiuser interference in high-speed mobile environment is severe. In this paper, the carrier frequency offset estimation algorithms are analyzed, and a double-iteration carrier frequency offset (CFO) estimation algorithm is proved to perform the best for PUCCH Format 1 in high-speed mobile scenario. The estimation process is achieved by coarse estimation and fine estimation, which enlarges the estimation range and improves the estimation accuracy.
목차
Abstract 1. Introduction 2. PUCCH Signal Model for High-speed Mobile Environment 3. Frequency Offset Estimation Algorithm for PUCCH Format 1 3.1. Frequency Offset Estimation Algorithm based on Pilot Symbols 3.2. Frequency Offset Estimation Algorithm based on Data Symbols 3.3. Joint Frequency Offset Estimation Algorithm based on Pilot and Data Symbols 4. Improved Carrier Frequency Offset Estimation Algorithms 5. Performance Comparison of Various Algorithms 6. Conclusion Acknowledgements References
키워드
LTE-advancedPUCCHcarrier frequency offset estimationdouble-iteration
저자
Dan Wang [ Key Laboratory of Mobile Communication Technology of Chongqing, Chongqing University of Posts and Telecommunications, China ]
Youbo Feng [ Key Laboratory of Mobile Communication Technology of Chongqing, Chongqing University of Posts and Telecommunications, China ]
Yiming Lin [ Key Laboratory of Mobile Communication Technology of Chongqing, Chongqing University of Posts and Telecommunications, China ]
보안공학연구지원센터(IJSIP) [Science & Engineering Research Support Center, Republic of Korea(IJSIP)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Signal Processing, Image Processing and Pattern Recognition
간기
격월간
pISSN
2005-4254
수록기간
2008~2016
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Signal Processing, Image Processing and Pattern Recognition Vol.8 No.9