KR960003199A - Frequency Domain Equalizer for Multicarrier Receivers - Google Patents

Frequency Domain Equalizer for Multicarrier Receivers Download PDF

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Publication number
KR960003199A
KR960003199A KR1019940015678A KR19940015678A KR960003199A KR 960003199 A KR960003199 A KR 960003199A KR 1019940015678 A KR1019940015678 A KR 1019940015678A KR 19940015678 A KR19940015678 A KR 19940015678A KR 960003199 A KR960003199 A KR 960003199A
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KR
South Korea
Prior art keywords
phase
amplitude
output
control signal
signal
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Application number
KR1019940015678A
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Korean (ko)
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KR0126785B1 (en
Inventor
임수빈
배희문
Original Assignee
김광호
삼성전자 주식회사
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940015678A priority Critical patent/KR0126785B1/en
Publication of KR960003199A publication Critical patent/KR960003199A/en
Application granted granted Critical
Publication of KR0126785B1 publication Critical patent/KR0126785B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers

Abstract

본 발명은 다중반송파수신기의 주파수영역 등화기에 관한 것으로, 복조된 N개외 서브채널 수신신호를 직렬로 변환하여 룩-업 테이블을 사용하여 상기 위상을 보상하는 위상보정기와 위상보정기의 출력을 입력하여 진폭조절신호에 따라 룩-업 테이블을 사용하여 진폭을 보정하는 신호포인트 역지정기를 구비하여 수신된 N개의 서브채널 신호의 진폭과 위상을 주파수영역상에서 보상한다.The present invention relates to a frequency domain equalizer of a multicarrier receiver, and converts a demodulated N additional subchannel received signals in series and inputs an output of a phase compensator and a phase compensator to compensate for the phase using a look-up table. A signal point de-specifier for correcting the amplitude using a look-up table according to the control signal is provided to compensate the amplitude and phase of the received N subchannel signals in the frequency domain.

Description

다중반송과 수신기의 주파수영역 등화기Frequency Domain Equalizer for Multiple Carriers and Receivers

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명에 의한 다중반송파 통신시스템을 도시한 블럭도이고,3 is a block diagram showing a multi-carrier communication system according to the present invention,

제4도는 제3도에 도시된 주파수영역 등화기를 보여주는 세부블럭도이다4 is a detailed block diagram showing the frequency domain equalizer shown in FIG.

Claims (3)

다중반송파 변조된 N개의 서브채널 신호를 수신하여 프리에변환(FFT)으로 복조한 후 전송중에 열화된 상기 N개의 서브채널 신호의 진폭과 위상을 주파수영역상에서 보상하는 다중반송파 수신기의 주파수영역 등화기에 있어서, 상기 복조된 N개의 서브채널 수신신호를 직렬로 변환하여 룩-업 테이블을 사용하여 상기 위상을 보상하는 위상보정기; 및 상기 위상보정기의 출력을 입력하여 진폭조절신호에 따라 룩-업 테이블율 사용하여 상기 진폭을 보정하는 신호포인트 역지정기를 구비한 것을 특징으로 하는 다중반송파 수신기의 주파수영역 등화기In the frequency domain equalizer of a multicarrier receiver for receiving the multi-carrier modulated N subchannel signals, demodulating them with a Fourier transform (FFT) and compensating the amplitude and phase of the deteriorated N subchannel signals in the frequency domain. A phase corrector for converting the demodulated N subchannel received signals in series and compensating the phase using a look-up table; And a signal point inverter for inputting the output of the phase compensator and correcting the amplitude using a look-up table rate according to the amplitude control signal. 제1항에 있어서, 상기 위상보정기는 상기 복조된 N개의 수신신호를 입력하여 직렬로 변환하는 병렬/직렬 변환기와, 상기 병렬/직렬 변환기의 출력에 따라 채널 및 샘플링 위상에러를 검출하는 위상에러검출기와, 상기 위상에러검출기의 출력에 따라 미리 저장된 소정의 신호를 출력하여 위상을 보정하는 위상 룩-업 테이블폼을 구비한 것을 특징으로 하는 다중반송파 수신기의 주파수영역 등화기.The apparatus of claim 1, wherein the phase corrector comprises: a parallel / serial converter for inputting and demodulating the demodulated N received signals in series; and a phase error detector for detecting channel and sampling phase errors according to the output of the parallel / serial converter. And a phase look-up table form for correcting a phase by outputting a predetermined signal according to the output of the phase error detector. 제1항에 있어서, 상기 신호포인트 역지정기는 상기 진폭조절신호의 상위비트를 입력하여 소정의 시프트제어신호를 출력하는 시프트 조정기와, 상기 위상 보정된 신호를 입력하여 상기 시프트저어신호에 따라 소정 비트 시프트하는 바렐시프터와, 상기 바렐시프터의 출력과 상기 진폭조절신호의 하위비트에 따라 미리 저장된 소정의 신호를 출력하여 진폭을 보정하는 진폭 룩-업테이블롬을 구비한 것을 특징으로 하는 다중반송파 수신기의 주파수영역 등화기.2. The signal point reverse designator of claim 1, wherein the signal point reverse designator inputs an upper bit of the amplitude control signal to output a predetermined shift control signal, and inputs the phase corrected signal to shift a predetermined bit according to the shift control signal. And a amplitude shift-up amplitude, which outputs a predetermined signal according to the output of the barrel shifter and the lower bit of the amplitude control signal, and corrects the amplitude of the multicarrier receiver. Area equalizer. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940015678A 1994-06-30 1994-06-30 A frequency domain equalizer of multi-carrier receivers KR0126785B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940015678A KR0126785B1 (en) 1994-06-30 1994-06-30 A frequency domain equalizer of multi-carrier receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940015678A KR0126785B1 (en) 1994-06-30 1994-06-30 A frequency domain equalizer of multi-carrier receivers

Publications (2)

Publication Number Publication Date
KR960003199A true KR960003199A (en) 1996-01-26
KR0126785B1 KR0126785B1 (en) 1998-04-01

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KR1019940015678A KR0126785B1 (en) 1994-06-30 1994-06-30 A frequency domain equalizer of multi-carrier receivers

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100315430B1 (en) * 1999-12-24 2001-11-26 오길록 Recursive Equalization Apparatus Of Frequency-domain Equalizer
KR100456701B1 (en) * 2002-11-07 2004-11-10 삼성전자주식회사 Multi carrier transmission system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030039226A1 (en) * 2001-08-24 2003-02-27 Kwak Joseph A. Physical layer automatic repeat request (ARQ)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100315430B1 (en) * 1999-12-24 2001-11-26 오길록 Recursive Equalization Apparatus Of Frequency-domain Equalizer
KR100456701B1 (en) * 2002-11-07 2004-11-10 삼성전자주식회사 Multi carrier transmission system

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Publication number Publication date
KR0126785B1 (en) 1998-04-01

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