전자공학회논문지S (Journal of the Korean Institute of Telematics and Electronics S)
- 제34S권8호
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- Pages.10-19
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- 1997
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- 1226-5837(pISSN)
마이크로셀 환경에서 간섭억압여파기를 이용한 포착성능의 향상
Enhancement of acquisition performance using interference suppression filter in a microcellular environment
초록
In this paper, perfodrmance of matched-filter (MF) acquisition scheme is analyzed for a direct-sequence/code-division-multiple-access (DS/CDMA) system in a microcellular environment. Mean acquistion time is used as a performance measure. It is demonstrated that acquisition performance is enhanced using interference suppression filter in a Rician fading channel. To apply for multiuser environments, multiple access interference is considered in the performance analysis. From the numerical results, it is shown that mean acquistion time decreases with the increasing SNR/chip, and acquisition performance is improved as the number of taps of interference suppression filter. It is also shown that mean acquisition time increases with the number of users in the system, and acquistion performance is degraded as the icrease of narrowband interference bandwidth. The analysis in this paper can be applied to a DS/CDMA overlay environment.
키워드