대한전자공학회논문지 (Journal of the Korean Institute of Telematics and Electronics)
- 제21권6호
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- Pages.105-114
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- 1984
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- 1016-135X(pISSN)
디지털 PN 초기 동기장치의 성능
Performance of a digital PN Sequence Acquisition System
- Kim, Yun-Gwan ;
- Eun, Jong-Gwan (Dept. of Electrical Eng. and Electronic Eng., Korea advanced Institute of Science and Technology) ;
- Ryu, Seung-Mun
- 발행 : 1984.11.01
초록
본 논문에서는 direct sequence(DS) 방식을 이용한 spread spectrum system에 사용할 수 있는 빠른 초기 동기 방법을 제안하였다. 수식적인 모델을 세우고 해석을 한 후 computer simulation을 거쳐 제안된 system의 성능을 분석하여 sliding correlator에 비해 우수함을 입증하였다. 입력 신호의 signal-to-noise ratio(SNR)가 -18dB에서 초기 동기 시간이 45ms 소요되었다. 이 방법의 hardsware 구현과 실험 결과도 설명하였다.
A fast pseudo-noise (PN) sequence acquisition algorithm for the direct-sequence (DS) spread spectrum system is proposed. The basic concept of the algorithm has been adopted from that of the classical sliding correlator. Mathematical modeling, analysis and computer simulation of the proposed system have been done. The results of analysis and computer simulation show that the acquisition system yields a significant performance improvement over the sliding correlator. Its acquisition time takes only 45 ms when signal-to-noise ratio(SNR) is -18dB. The algorithm developed has been implemented in hardware and its experimental result is also given.
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