Exploiting phase diversity for CDMA2000 1è smart antenna base stations

  • Authors:
  • Seongdo Kim;Seungheon Hyeon;Seungwon Choi

  • Affiliations:
  • Advanced R&D Team, Ace Technology, Seoul, Korea;School of Electrical and Computer Engineering, Hanyang University, Seoul, Korea;School of Electrical and Computer Engineering, Hanyang University, Seoul, Korea

  • Venue:
  • EURASIP Journal on Applied Signal Processing
  • Year:
  • 2004

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Abstract

A performance analysis of an access channel decoder is presented which exploits a diversity gain due to the independent magnitude of received signals energy at each of the antenna elements of a smart-antenna base-station transceiver subsystem (BTS) operating in CDMA2000 1X signal environment. The objective is to enhance the data retrieval at cellsite during the access period, for which the optimal weight vector of the smart antenna BTS is not available. It is shown in this paper that the access channel decoder proposed in this paper outperforms the conventional one, which is based on a single antenna channel in terms of detection probability of access probe, access channel failure probability, and Walsh-code demodulation performance.