Browse > Article

On the user equipment (UE) side time tracker design and implementation of the WCDMA system  

Yeh, Choong-Il (원광대학교)
Chang, Kyung-Hi (원광대학교)
Kim, Hwan-Woo (원광대학교)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.28, no.2A, 2003 , pp. 96-101 More about this Journal
Abstract
This paper is on the user equipment (UE) side time tracker design and implementation of the wideband code division multiple access (WCDMA) system. The time tracker is constructed as a second order closed loop including time error detector (TED), loop filter (LP), numerically controlled oscillator (NCO), and sample selector (SS). Through the simulation, we found the gain of the TED as a function of the CPICH power contribution to the total transmission power of the base station. Also we derived the transfer function of the loop and the BER versus DPCH power relationships where timing offsets and loop noise bandwidths are used as parameters. In the curve, we can conclude that there are appropriate loop noise bandwidths according to the given environments for the better performance.
Keywords
Citations & Related Records
연도 인용수 순위
  • Reference
1 김남수, '디지털 이동통신 시스템에서 데이터 타이밍 오차와 수신 대역 필터에 의한 성능 열화, 한국통신학회논문지, v.18, n.10, pp.1598-1605 1226-4725, 10.1993
2 공형윤, '차세대 무선통신시스템에서 전송효율의 향상을위한 3차원 인터리버의 설계,' 한국통신학회논문지, v.26, n.3B, pp.369-374 1226-4725, 2001.03   과학기술학회마을
3 강법주, 'IS-95역방향 링크에서 단일 적분 및 이중 적분 검색 방식의 성능 분석, ' 한국통신학회논문지, v.21, n.2, pp.383-393 1226-4725, 1996.02   과학기술학회마을
4 Ikeda, T., Okawa, K., Sawahashi, M., Adachi, F., 'Expehmental evaluation of coherent RAKE receiver for broadband DS-CDMA mobile radio,' VTC 2000-Sphng Tokyo, Volume 3, pp.1849-1853, 2000
5 Ruly Lai-U Choi, Letaief, K.B., Murch, R.D., 'MISO CDMA transmission with simplified receiver for wireless communication handsets,' IEEE Transactions on Communications, v.49, Issue 5, pp.888-898, May 2001   DOI   ScienceOn
6 Bottomley, G.E., Ottosson, T.,Wang, Y.-P.E., A generalized RAKE receiver for DS-CDMA systems,' VTC 2OOO-Spring Tokyo, pp.941-945, Volume 2, 2000
7 Welti, A.L., Bobrovsky, B.Z., 'Long-term frequency stability requirements and optimal design of a code tracking delay-lock loop,' GLOBECOM'88, pp.551-555, 1988
8 Heinrich Meyr, Gerd Ascheld, Synchronization in Digital Communications Volume 1, John Wiley & Sons, pp.99-157, 1990