Performance Analysis of Access Channel Decoder Implemeted for CDMA2000 1X Smart Antenna Base Station 


Vol. 29,  No. 2, pp. 147-156, Feb.  2004


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  Abstract

This paper presents an implementation and performance analysis of an access channel decoder which exploits a diversity gain due to the independent magnitude of received signals energy at each of antenna elements of a smart antenna BTS (Base-station Transceiver Subsystem) operating in CDMA2000 1X signal environment. Proposed access channel decoder consists of a searcher supporting 4 lingers, Walsh demodulator, and demodulator controller. They have. been implemented with 5 of 1 million-gate FPGA's (Field Programmable Gate Array) Altera's APEX EP20Kl000EBC652 and TMS320C6203 DSP (digital signal processing). The objective of the proposed access channel decoders is 10 enhance the data retrieval at cell-site during the access period, for which the optimal weight vector of the smart antenna BTS is not available. Through experimental test, we confirmed that the proposed access channel decoder exploiting the diversity technique 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 Eb/No in Walsh demodulator.

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  Cite this article

[IEEE Style]

S. Kim, S. Hyeon, S. Choi, "Performance Analysis of Access Channel Decoder Implemeted for CDMA2000 1X Smart Antenna Base Station," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 2, pp. 147-156, 2004. DOI: .

[ACM Style]

Seongdo Kim, Seungheon Hyeon, and Seungwon Choi. 2004. Performance Analysis of Access Channel Decoder Implemeted for CDMA2000 1X Smart Antenna Base Station. The Journal of Korean Institute of Communications and Information Sciences, 29, 2, (2004), 147-156. DOI: .

[KICS Style]

Seongdo Kim, Seungheon Hyeon, Seungwon Choi, "Performance Analysis of Access Channel Decoder Implemeted for CDMA2000 1X Smart Antenna Base Station," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 2, pp. 147-156, 2. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880