Open Access

Exploiting Phase Diversity for CDMA2000 1X Smart Antenna Base Stations

EURASIP Journal on Advances in Signal Processing20042004:921237

Received: 25 June 2003

Published: 19 August 2004


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.

Keywords and phrases

phase diversity access channel searching Walsh-code demodulation CDMA2000 1X