KR970056175A - Spread Spectrum PN Code Tracking Device Using Parallel Correlator - Google Patents

Spread Spectrum PN Code Tracking Device Using Parallel Correlator Download PDF

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KR970056175A
KR970056175A KR1019950050514A KR19950050514A KR970056175A KR 970056175 A KR970056175 A KR 970056175A KR 1019950050514 A KR1019950050514 A KR 1019950050514A KR 19950050514 A KR19950050514 A KR 19950050514A KR 970056175 A KR970056175 A KR 970056175A
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South Korea
Prior art keywords
code
signal
modulo
generating
correlation value
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KR1019950050514A
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Korean (ko)
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KR0155522B1 (en
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오현서
김응배
최상호
박채민
성진숙
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양승택
한국전자통신연구원
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Publication of KR970056175A publication Critical patent/KR970056175A/en
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  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

본 발명은 병렬 상관기를 이용한 대역확산 PN 코드 트랙킹장치에 관한 것으로서, 종래기술은 다경로 채널을 통과한 신호를 수신할 때 다경로의 랜덤한 시간지연으로 인한 신호의 찌그러짐 현상에 의해 수신신호의 복조시 에러를 증가시켜 전체적인 성능을 저하시켰던 문제점이 있었다.The present invention relates to a spread spectrum PN code tracking device using a parallel correlator, and the prior art demodulates a received signal due to signal distortion due to random time delay of a multipath when receiving a signal passing through a multipath channel. There was a problem that the overall performance was reduced by increasing the error.

따라서 본 발명은 수신신호를 N개의 지연 레지스터를 통과시킨 후 자체 발생된 PN 코드 타이밍과 상관값을 계산하고 적분하며, 적분된 신호를 샘플링하여 최대 상관값을 선택한다.Accordingly, the present invention calculates and integrates the PN code timing and correlation values generated after passing the received signals through the N delay registers, and selects the maximum correlation value by sampling the integrated signal.

그리고 최대 상관값을 갖는 시점을 기준으로 모듈로 N 계수기를 리셋시키고 모듈로 N 계수기에서 생성된 클럭으로 자체 PN 코드를 발생시키는 구성으로 되어 있는 것이다.The module modifies the modulo N counter based on the point of time with the highest correlation value and generates its own PN code with the clock generated by the modulo N counter.

Description

병렬 상관기를 이용한 대역확산 PN 코드 트랙킹장치Spread Spectrum PN Code Tracking Device Using Parallel Correlator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 DLL 방식에서의 다경로 페이딩 채널로 인한 S 커브에 미치는 영향을 나타낸 도면.1 is a diagram showing the effect on the S curve due to the multipath fading channel in the DLL scheme.

제2도는 본 발명의 병렬 상관기를 이용한 새로운 PN 코드 트랙킹장치의 블록 구성도.2 is a block diagram of a new PN code tracking device using the parallel correlator of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10a-10n : 다수개의 쉬프트 레지스터 20a-20n : 다수개의 곱셈기10a-10n: Multiple Shift Registers 20a-20n: Multiple Multipliers

30a-30n : 다수개의 적분기 40 : 선택부30a-30n: Multiple integrator 40: Selection part

50 : 모듈로(Modulo) 계수기 60 : PN 코드 생성기50: Modulo counter 60: PN code generator

Claims (1)

수신신호의 한 칩내에서시간 만큼 N번 지연시키는 다수개의 신호지연수단, 상기 다수개의 신호지연수단에 의해 지연된 신호들을 내부에서 생성된 의사잡음(PN)코드와 곱하는 다수개의 곱셈수단 그리고 상기 곱셈수단에서 곱하여진 신호를 여러개의 칩 동안 적분하여 상관값을 계산하는 다수개의 적분수단으로 구성되어 최대 상관값을 생성하는 신호가 최적의 코드동기시점임을 알아내는 제1 수단과, 상기 다수개의 적분수단에서 생성된 신호들중 최대 상관값을 갖는 신호를 선택하는 선택수단, 상기 선택수단의 스위칭시간을 기준으로 자체 칩 클럭을 생성하는 모듈로 N계수 수단, 상기 모듈로 N계수수단에서 생성된 클럭에 따라 송신과 동일한 PN 코드를 생성하는 PN코드 생성수단으로 구성되어 수신신호의 다경로 지연시간을 추정하고 송신 PN 코드와 동일한 코드를 생성하는 제2 수단으로 구성된 것을 특징으로 하는 병렬 상관기를 이용한 대역확산 PN 코드 트랙킹장치.Within one chip of the received signal A plurality of signal delay means for delaying N times by time, a plurality of multiplication means for multiplying the signals delayed by the plurality of signal delay means with an internally generated pseudo noise (PN) code, and a plurality of signals multiplied by the multiplication means A first means comprising a plurality of integrating means for integrating during the chip to calculate a correlation value and finding out that the signal generating the maximum correlation value is an optimal code synchronization point; and the maximum correlation among the signals generated by the plurality of integrating means A selection means for selecting a signal having a value, a modulo N coefficient means for generating a chip clock thereof based on the switching time of the selection means, and generating the same PN code as the transmission according to a clock generated by the modulo N coefficient means PN code generation means for estimating the multipath delay time of the received signal and generating the same code as the transmitted PN code. PN spreading code tracking apparatus using an parallel correlation, characterized in that consists of two means. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950050514A 1995-12-15 1995-12-15 Spread spectrum pseudo noise code tracking device using parallel correllator KR0155522B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950050514A KR0155522B1 (en) 1995-12-15 1995-12-15 Spread spectrum pseudo noise code tracking device using parallel correllator

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Application Number Priority Date Filing Date Title
KR1019950050514A KR0155522B1 (en) 1995-12-15 1995-12-15 Spread spectrum pseudo noise code tracking device using parallel correllator

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KR970056175A true KR970056175A (en) 1997-07-31
KR0155522B1 KR0155522B1 (en) 1998-11-16

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100532328B1 (en) * 1998-08-29 2006-03-23 삼성전자주식회사 P. Sequence Identifier of Code Division Multiple Access Communication System
KR101961912B1 (en) 2017-08-30 2019-03-28 한화시스템 주식회사 Method for correlating signal
KR20190032333A (en) 2019-03-19 2019-03-27 한화시스템 주식회사 Method for correlating signal
KR20190033053A (en) 2019-03-19 2019-03-28 한화시스템 주식회사 Method for correlating signal
CN110113074B (en) * 2019-05-17 2021-02-26 中国电子科技集团公司第五十四研究所 High-speed pseudo code parallel capturing and tracking method based on FPGA

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