KR101406160B1 - Dvb-t/h 수신기에서의 공통 위상 오차를 제거하기 위한 장치 및 방법 - Google Patents
Dvb-t/h 수신기에서의 공통 위상 오차를 제거하기 위한 장치 및 방법 Download PDFInfo
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- KR101406160B1 KR101406160B1 KR1020097027308A KR20097027308A KR101406160B1 KR 101406160 B1 KR101406160 B1 KR 101406160B1 KR 1020097027308 A KR1020097027308 A KR 1020097027308A KR 20097027308 A KR20097027308 A KR 20097027308A KR 101406160 B1 KR101406160 B1 KR 101406160B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/022—Channel estimation of frequency response
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
- H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
- H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
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Abstract
Description
Claims (20)
- 수신기에서 이용하기 위한 방법에 있어서,신호를 수신하는 단계로서, 상기 신호는 직교 주파수 분할 다중 방식(OFDM) 신호를 나타내는, 수신 단계; 및위상 보정된 신호를 제공하기 위해, 채널 상태 정보(CSI)의 함수로서 신호에 대한 위상 오차 보정을 수행하는 단계를 포함하고,상기 위상 오차 보정을 수행하는 단계는,상기 CSI의 함수로서, 미리-천이된 연속적인 파일럿(CP)을 수정하여, 미리-천이된 CP-CSI 시퀀스를 제공하는, 미리-천이된 CP를 수정하는 단계;상기 신호를 나타내는 FFT 출력 데이터를 상기 미리-천이된 CP-CSI 시퀀스와 교차-상관시켜서, 교차-상관 결과를 제공하는, 교차-상관 단계;상기 교차-상관 결과로부터 위상 오차를 결정하는 단계; 및결정된 위상 오차에 따라서 신호의 위상을 보정하는 단계를 더 포함하고,상기 보정하는 단계는 결정된 위상 오차에 따라서 상기 신호를 회전시키는 단계를 포함하는,수신기에서 이용하기 위한 방법.
- 제1항에 있어서,수신된 무선 주파수 신호를 하향변환하여, 하향변환된 신호를 제공하는, 하향변환 단계;상기 하향변환된 신호에 고속 푸리에 변환(FFT)을 수행하여, FFT 출력 신호를 제공하는, 고속 푸리에 변환을 수행하는 단계; 그리고상기 FFT 출력 신호를 스펙트럼 천이시켜서, 신호를 제공하는, 스펙트럼 천이 단계를 더 포함하는, 수신기에서 이용하기 위한 방법.
- 제1항에 있어서, 상기 위상 오차는, 공통 위상 오차(common phase error)를 나타내는, 수신기에서 이용하기 위한 방법.
- 제1항에 있어서,상기 위상 보정된 신호를 처리하여, CSI 정보를 제공하는, 처리 단계를 더 포함하는, 수신기에서 이용하기 위한 방법.
- 제1항에 있어서,CSI 정보가 생성되도록 하는 방식으로, 등화된(equalized) 신호를 제공하기 위해, 위상 보정된 신호를 등화시키는 단계를 더 포함하는, 수신기에서 이용하기 위한 방법.
- 삭제
- 장치에 있어서,다수의 샘플을 포함하는 FFT 출력 신호를 제공하기 위한 고속 푸리에 변환기(FFT);상기 FFT 출력 신호 내의 샘플들을 재정렬하여, 스펙트럼 천이된 신호를 제공하기 위한 스펙트럼 천이기; 및상기 FFT 출력 신호로부터 위상 오차를 추정하기 위하여, 그리고 추정된 위상 오차에 따라서 스펙트럼 천이된 신호의 위상을 보정하기 위하여 채널 상태 정보(CSI)에 응답하는, 위상 보정기를 포함하고,상기 위상 보정기는,FFT 출력 신호 내의 미리-천이된 연속적인 파일럿(CP)의 위치를 저장하기 위한 메모리;수정되고 미리-천이된 CP를 저장하기 위한 메모리로서, 상기 수정되고 미리-천이된 CP는, 미리-천이된 CP와 CSI로부터 도출되는, 수정되고 미리-천이된 CP를 저장하기 위한 메모리;상기 위상 오차의 추정에 이용하기 위한 교차 상관기로서, 상기 교차 상관기는, 상기 수정되고 미리-천이된 CP를 FFT 출력 신호와 교차 상관시키는, 교차 상관기; 및추정된 위상 오차에 따라서 스펙트럼 천이된 신호의 위상을 보정하기 위한 회전기를 포함하는, 장치.
- 제7항에 있어서, 상기 위상 오차는 공통 위상 오차를 나타내는, 장치.
- 삭제
- 제7항에 있어서,위상 보정된 스펙트럼 천이된 신호를 등화시키고 CSI를 제공하기 위한, 등화기를 더 포함하는, 장치.
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Applications Claiming Priority (1)
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PCT/CN2007/002032 WO2009003305A1 (en) | 2007-06-29 | 2007-06-29 | Apparatus and method for removing common phase error in a dvb-t/h receiver |
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KR20100028583A KR20100028583A (ko) | 2010-03-12 |
KR101406160B1 true KR101406160B1 (ko) | 2014-06-12 |
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US (1) | US8559490B2 (ko) |
EP (1) | EP2165493B1 (ko) |
JP (1) | JP5065483B2 (ko) |
KR (1) | KR101406160B1 (ko) |
CN (1) | CN101690060B (ko) |
BR (1) | BRPI0721767B1 (ko) |
WO (1) | WO2009003305A1 (ko) |
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CN103428156B (zh) * | 2012-05-14 | 2016-08-24 | 晨星软件研发(深圳)有限公司 | 相位误差修正装置及相位误差修正方法 |
US9191183B2 (en) * | 2013-08-27 | 2015-11-17 | Maxlinear, Inc. | Using decision feedback phase error correction |
KR101674832B1 (ko) * | 2015-11-13 | 2016-11-09 | 고려대학교 산학협력단 | 각 안테나 단마다 독립적인 발진기를 가지는 2×2 다중 입출력 시스템에서 위상잡음제거 방법 및 장치 |
CN108008365B (zh) * | 2017-11-22 | 2021-04-06 | 西南电子技术研究所(中国电子科技集团公司第十研究所) | 多通道幅度/相位标校方法 |
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KR20100028583A (ko) | 2010-03-12 |
US8559490B2 (en) | 2013-10-15 |
BRPI0721767A2 (pt) | 2013-04-02 |
EP2165493A4 (en) | 2012-06-06 |
CN101690060A (zh) | 2010-03-31 |
EP2165493A1 (en) | 2010-03-24 |
BRPI0721767B1 (pt) | 2019-11-12 |
JP5065483B2 (ja) | 2012-10-31 |
JP2010532113A (ja) | 2010-09-30 |
US20100142658A1 (en) | 2010-06-10 |
WO2009003305A1 (en) | 2009-01-08 |
EP2165493B1 (en) | 2013-04-17 |
CN101690060B (zh) | 2012-09-26 |
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