Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

The modified CP-AFC with Multistage Tracking Mode for WCDMA Reverse Link Receiver

  • Do, Joo-Hyun (Department of Electronics & Computer engineering, SungKyunKwan University) ;
  • Lee, Young-Yong (Department of Electronics & Computer engineering, SungKyunKwan University) ;
  • Kim, Cheol (Information & Communication R&D Lab., A-LOGICS Co., Ltd.) ;
  • Rim, Min-Joong (Dept. of Information & Communication Engineering, DongGuk University) ;
  • Ahn, Jae-Min (Dept. of Information & Communication Engineering, ChungNam National University) ;
  • Park, Hyung-Jin (Department of Electronics & Computer engineering, SungKyunKwan University)
  • Published : 2002.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose a modified CP-AFC(Cross-Product Automatic Frequency Control) algorithm to enhance coherent signal detection for WCDMA reverse link receiver. We introduce a moving average filter at the FDD(Frequency Difference Detector) input to increase the number of cross-products, since pilot symbol in WCDMA is not transmitted continuously. We also add normalization algorithm to overcome the conventional CP-FDD's sensitivity to the variance of input signal amplitude and to increase the linear range of S- curve. For rapid frequency acquisition and tracking, we adopt a multi-stage tracking mode. We applied the proposed algorithm in the implementation of WCDMA base station modem successfully.

Keywords