KR950022269A - 직접확산/부호분할 다중접근 시스템에서의 업-링크 접근 시스템 - Google Patents

직접확산/부호분할 다중접근 시스템에서의 업-링크 접근 시스템 Download PDF

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KR950022269A
KR950022269A KR1019930031814A KR930031814A KR950022269A KR 950022269 A KR950022269 A KR 950022269A KR 1019930031814 A KR1019930031814 A KR 1019930031814A KR 930031814 A KR930031814 A KR 930031814A KR 950022269 A KR950022269 A KR 950022269A
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code
fid
output
signal
outputting
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KR1019930031814A
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KR100217715B1 (ko
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김제우
박종현
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김광호
삼성전자 주식회사
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Priority to KR1019930031814A priority Critical patent/KR100217715B1/ko
Priority to US08/364,719 priority patent/US5604732A/en
Priority to JP32650394A priority patent/JP3078997B2/ja
Priority to GB9426314A priority patent/GB2285371B/en
Priority to DE19944447230 priority patent/DE4447230C2/de
Publication of KR950022269A publication Critical patent/KR950022269A/ko
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Publication of KR100217715B1 publication Critical patent/KR100217715B1/ko

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

DS/SS CDMA 시스템의 링크접속회로레 관한 것으로, 특히 다수의 이동국가 부호 분할에 의해 기지국과의 다중 접속을 실행할때 발생되는 원근문제를 최소화할 수 있도록 업링크(Up_link)다중 접속시스템을 제공한다. 상기의 시스템은 적어도 하나 이상의 이동국과 상기 하나 이상의 이동국과 CDMA방식으로 다중통신을 하는 기지국를 구비한다. 그리고, 기지국으로 전송할 데이터를 고유의 의사 잡음 신호와 혼합하여 PN부호변조하고, 상기 PN부호 변조된 신호를 고유의 식별 주파수(fid)에 의해 대역이 시프트된 반송파 주파수(fcu+fid)와 혼합하여 변조 출력하는 송신수단과, 상기 PN부호와 고유의 식별 주파수(fid)가 혼합된 복조 주파수와 상기 송신 수단에서 송신된 신호를 혼합하여 출력하는 혼합수단을 포함하며, 상기 혼합수단으로부터 출력되는 신호를 적분하여 디지탈의 신호로 복조하여 출력하는 수신수단을 포함한다.

Description

직접확산/부호분할 다중접근 시스템에서의 업-링크 접근 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제4도는 본 발명에 따른 직접확산/부호분할 다중접근 시스템에서X번째 이동국의 업링크 접속을 위한 구성도.
제5도는 본 발명에 따른 직접확산/부호분할 다중접근 시스템의 복조기의 구성도.

Claims (4)

  1. 적어도 하나 이상의 이동국과 상기 하나 이상의 이동국과 CDMA방식으로 다중통신을 하는 기지국를 구비하는 DS/SS CDMA 시스템에 있어서, 기지국으로 전송할 데이터를 고유의 의사 잡음 신호와 혼합하여 PN부호변조하고, 상기 PN부호 변조된 신호를 고유의 식별 주파수(fid)에 의해 개역이 시프트된 반송파 주파수(fcu+fid)와 혼합하여 변조 출력하는 송신수단과, 상기 PN부호와 고유의 식별 주파수(fid)가 혼합된 복조 주파수와 상기 송신 수단에서 송신된 신호를 혼합하여 출력하는 혼합수단을 포함하며, 상기 혼합수단으로부터 출력되는 신호를 적분하여 디지탈의 신호로 복조하여 출력하는 수신수단으로 구성됨을 특징으로 하는 시스템.
  2. 제1항에 있어서, 상기 송신수단은, 이동국 고유의 PN코드를 발생하는 의사 잡음 발생기(42)와, 상기 의사 잡음 발생기(42)로부터 발생된 PN코드와 이동국의 베이스 밴드 이터(DX)를 PN부호롤 변조하여 출력하는 혼합기(44)와, 업링크반송파 주파수(fcu)에 고유 식별 주파수(fid)가 혼합된 반송파(fcu+fid)를 발생하는 업링크 반송파 가변 발생기(52)와, 상기 혼합기(44)로부터 출력되는 PN부호로 변호된 신호와 업링크 반송파 가변 발생기(52)로부터 출력되는 반송파 (fcu+fid)를 혼합하여 상기 PN변조된 신호를 변조하여 출력단자(50)로 전송하는 혼합기(46)로 구성됨을 특징으로 하느 시스템.
  3. 제1항 또는 제2항에 있어서, 상기 수신수단은, 이동국의 PN코드와 동일한 PN코드를 발생하는 의사 잡음 발생기(56)와 식별주파수(fm)이 혼합된 업링크반송파 주파수(fcu+fid)를 발생하는 업링크 반송파 가변 발생기(58)와, 상기 의사 잡음 발생기(56)로부터 출력되는 PN코드와 상기 업링크 반송파 가변 발생기(58)로부터 출력되는 업링크 반송파 주파수(fcu+fid)를 혼합하여 복조 반송파Y(t)를 발생하는 혼합기(60)와, 대역확산되어 수신된 수신신호 r(t)와 상기 혼합기(60)로부터 출력되는 복조 반송파 Y(t)를 혼합하여 출력하는 혼합기(62)와, 상가 혼합기(62)의 출력을 적분하여 출력하는 적분기(64)와, 상기 적분기(64)의 출력을 판정하여 디지탈의 데이터로 복원하는 판정회로(66)로 구성된 수신기로 구성됨을 특징으로 하는 시스템.
  4. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930031814A 1993-12-31 1993-12-31 직접확산/부호분할 다중접근 시스템에서의 업-링크 접근 시스템 KR100217715B1 (ko)

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Application Number Priority Date Filing Date Title
KR1019930031814A KR100217715B1 (ko) 1993-12-31 1993-12-31 직접확산/부호분할 다중접근 시스템에서의 업-링크 접근 시스템
US08/364,719 US5604732A (en) 1993-12-31 1994-12-27 Up-link access apparatus in direct sequence code division multiple access system
JP32650394A JP3078997B2 (ja) 1993-12-31 1994-12-28 直接拡散通信方式の多元接続方法及びそれに使用される多元接続装置
GB9426314A GB2285371B (en) 1993-12-31 1994-12-29 Ds/ss-cdma up-link access
DE19944447230 DE4447230C2 (de) 1993-12-31 1994-12-30 Modulationsverfahren, Demodulationsverfahren, Modulator und Demodulator sowie Verwendung von Modulator und Demodulator

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KR1019930031814A KR100217715B1 (ko) 1993-12-31 1993-12-31 직접확산/부호분할 다중접근 시스템에서의 업-링크 접근 시스템

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KR950022269A true KR950022269A (ko) 1995-07-28
KR100217715B1 KR100217715B1 (ko) 1999-09-01

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JP (1) JP3078997B2 (ko)
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DE (1) DE4447230C2 (ko)
GB (1) GB2285371B (ko)

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GB9426314D0 (en) 1995-03-01
JPH07222253A (ja) 1995-08-18
GB2285371B (en) 1998-03-25
US5604732A (en) 1997-02-18
DE4447230C2 (de) 2002-09-19
KR100217715B1 (ko) 1999-09-01
DE4447230A1 (de) 1995-07-06
JP3078997B2 (ja) 2000-08-21
GB2285371A (en) 1995-07-05

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