KR950022267A - Code tracking circuit and method in band conversion communication system - Google Patents

Code tracking circuit and method in band conversion communication system Download PDF

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Publication number
KR950022267A
KR950022267A KR1019930031330A KR930031330A KR950022267A KR 950022267 A KR950022267 A KR 950022267A KR 1019930031330 A KR1019930031330 A KR 1019930031330A KR 930031330 A KR930031330 A KR 930031330A KR 950022267 A KR950022267 A KR 950022267A
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KR
South Korea
Prior art keywords
code
tracking
synchronization
range
communication system
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KR1019930031330A
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Korean (ko)
Inventor
김덕현
김진규
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김광호
삼성전자 주식회사
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Priority to KR1019930031330A priority Critical patent/KR950022267A/en
Publication of KR950022267A publication Critical patent/KR950022267A/en

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Abstract

대역환산 통신시스템의 코드 추적회로 및 방법에 관한 것으로, 특히 대역환산 통신방식을 이용한 통신시스템에서 데이타가 수신될 때 기지국의 코드동기시 코드 추적범위내에서 PN코드 동기를 추적하는 코드추적회로 및 방법에 관한 것이다Code tracking circuit and method for band tracking communication system. Especially, when data is received in communication system using band conversion communication system, code tracking circuit and method for tracking PN code synchronization within code tracking range of code synchronization of base station Is about

대역환산 통신시스템에서 코드동기 시간이 길어지는 문제를 해결학 위해 송신츠과 수신측간의 전송지연시간을 고려하여 코드 추적범위를 설정하고, 송신기로 부터 발생되는 PN코드를 기준으로 수신측의 PN코드동기시 코드 추적 범위내에서만 PN코드동기회로를 구동시켜 전송지연시간의 2배에 해당하는 시간동안만 PN동기를 확인하여 PN코드동기시간을 짧게함으로 통화접속시간을 단축시킨다.To solve the problem of longer code synchronization time in the band conversion communication system, the code tracking range is set in consideration of the transmission delay time between the transmitter and the receiver, and the PN code synchronization of the receiver is based on the PN code generated from the transmitter. The PN code synchronization circuit is operated only within the range of time code tracking so that the PN code synchronization time is shortened by checking the PN synchronization only for a time corresponding to twice the transmission delay time, thereby shortening the call connection time.

Description

대역환산 통신시스템의 코드 추적회로 및 방법Code tracking circuit and method in band conversion communication system

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

제3도는 본 발명에 따른 대역환산 통신방식 수신기의 PN코드 동기 추적회로도.3 is a PN code synchronization tracking circuit diagram of a band conversion communication receiver according to the present invention.

제4도는 본 발명에 따른 PN코드 동기 추적 제어 흐름도.4 is a flowchart of a PN code synchronization tracking control according to the present invention.

Claims (4)

대역환산 통신시스템의 코드 추적회로에 있어서, 중간주파신호를 입력하여 소정의 PN코드에 의해 역확산시켜 출력하는 역확산기(12)와, 상기 역확산기(12)로부터 역확산된 신호로부터 PN코드 동기가 맞았는지를 검출하여 PN코드 동기검출신호를 출력하는 코드동기 검출기(14)와, 상기 코드동기 검출기(14)로부터 출력된 PN코드동기 검출신호를 입력하여 소정 제어신호에 의해 트랙킹모드와 추적모드로 설정하는 클럭조절기(160와, 상기 클럭조절기(16)로부터 출력된 클럭조절신호를 받아 송신된 PN코드를 기준으로 동일한 PN코드위상에서 기지국과 이동국간의전송시간을 고렬한 코드 추적 범위를 설정하여 상기 코드추적 범위내에서만 PN코드(18)를 구동시키느 추적범위 설정기 (24)와 PN코드의 위상을 조절하기 위한 오브셋 정보를 발생하고, PN코드동기를 추적할 수 있도록 제어하는 CPU(20)와, 상기 클럭조절기(16)로부터 출력된 설정모드에 따라 상기 CPU(20)의 PN오프셋 정보에 의해 PN코드를 발생하여 출력하는 PN코드 발생기(18)로 구성함을 특징으로 하는 회로.A code tracking circuit of a band conversion communication system, comprising: a despreader (12) for inputting an intermediate frequency signal, despreading and outputting a predetermined PN code, and synchronizing a PN code from a signal despread from the despreader (12) A code synchronization detector 14 which detects whether a match is correct and outputs a PN code synchronization detection signal, and a PN code synchronization detection signal output from the code synchronization detector 14, and inputs a tracking mode and a tracking mode by a predetermined control signal. Set a code tracking range in which the transmission time between the base station and the mobile station is set on the same PN code phase based on the PN code received from the clock controller 160 and the clock control signal output from the clock controller 16. Generates the tracking range setter 24 for driving the PN code 18 and the object set information for adjusting the phase of the PN code within the code tracking range, and tracks the PN code synchronization. And a PN code generator 18 which generates and outputs a PN code according to the PN offset information of the CPU 20 according to a setting mode output from the clock controller 16. Circuit characterized in that. 대역환산 통신시스템의 코드 추적회로에 있어서, 수신기를 추적모드로 설정한 후 상기 수신기의 PN코드를 송신기의 PN코드와 동일하게 하여 PN코드 추적범위를 설정하는 과정과, 상기 코드 추적범위를 설정한 후 PN코드 를 추적하여 동기가 맞았는가 검사하는 과정과, 상기 PN코드 동기가 맞지 않을시 PN코드 위상을 조정하여 코드추적 설정범위내에서 PN코드 를 추적하여 PN코드 동기를 검출하는 과정으로 이루어짐을 특징으로 하는 방법.A code tracking circuit of a band conversion communication system, comprising: setting a receiver in a tracking mode and setting a PN code tracking range by setting a PN code of the receiver equal to a PN code of a transmitter; After the PN code is tracked to check whether the synchronization is correct, and if the PN code synchronization is not correct, the PN code phase is adjusted to track the PN code within the code tracking setting range to detect the PN code synchronization. How to feature. 제1항에 있어서, 상기 PN코드 동기가 맞았을 시 상기 수신기를 트랙킹모드로 전환하여 데이타를 복조한 후 통화로를 접속하는 과정을 더 구비함을 특징으로 하는 방법.The method of claim 1, further comprising: demodulating data by switching the receiver to a tracking mode when the PN code synchronization is correct, and connecting a communication path. 대역환산 통신시스템의 코드 추적회로에 있어서, 수신기를 추적모드로 설정한 후 상기 수신기의 PN코드를 송신기의 PN코드와 동일하게 하여 PN코드 추적범위를 설정하고, 상기 코드추적 설정범위내에서 PN코드를 추적하여 동기를 추적함을 특징으로 하는 방법.In the code tracking circuit of the band conversion communication system, after setting the receiver to the tracking mode, the PN code tracking range is set by making the PN code of the receiver the same as the PN code of the transmitter, and the PN code within the code tracking setting range. Tracking the synchronization by tracking the method. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930031330A 1993-12-30 1993-12-30 Code tracking circuit and method in band conversion communication system KR950022267A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100332281B1 (en) * 1996-07-09 2002-08-14 가부시키가이샤 히다치 고쿠사이 덴키 CDMA communication system and communication method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100332281B1 (en) * 1996-07-09 2002-08-14 가부시키가이샤 히다치 고쿠사이 덴키 CDMA communication system and communication method

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