JP4961038B2 - Dvb−t/h受信器でコモンフェーズエラーを除去する装置及び方法 - Google Patents
Dvb−t/h受信器でコモンフェーズエラーを除去する装置及び方法 Download PDFInfo
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- JP4961038B2 JP4961038B2 JP2010513607A JP2010513607A JP4961038B2 JP 4961038 B2 JP4961038 B2 JP 4961038B2 JP 2010513607 A JP2010513607 A JP 2010513607A JP 2010513607 A JP2010513607 A JP 2010513607A JP 4961038 B2 JP4961038 B2 JP 4961038B2
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- 238000000034 method Methods 0.000 title claims description 21
- 230000003595 spectral effect Effects 0.000 claims description 37
- 238000012937 correction Methods 0.000 claims description 16
- 238000001228 spectrum Methods 0.000 claims description 11
- 230000006870 function Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 5
- 239000000872 buffer Substances 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000002131 composite material Substances 0.000 description 7
- 239000013256 coordination polymer Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
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Classifications
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
-
- 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
-
- 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
- H04L25/0224—Channel estimation using sounding signals
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Circuits Of Receivers In General (AREA)
Description
Claims (13)
- 受信器での使用のための方法であって、
FFT出力信号を供給するよう信号に対して高速フーリエ変換(FFT)を行うステップと、
スペクトルシフト信号を供給するよう前記FFT出力信号にスペクトルシフトを行うステップと、
前記FFT出力信号から位相誤差を決定するステップと、
補正信号を供給するよう、決定された前記位相誤差に従って前記スペクトルシフト信号を補正するステップと
を有する方法。 - 前記信号を供給するよう受信信号をダウンコンバートするステップを更に有する請求項1記載の方法。
- 前記位相誤差はコモンフェーズエラーを表す、請求項1記載の方法。
- 前記位相誤差を決定するステップは、
予めシフトされた連続パイロット(CP)を、プレシフトCP−CSIシーケンスを供給するようチャネルステート情報(CSI)の関数として変更するステップと、
相互相関結果を供給するよう前記FFT出力信号を前記プレシフトCP−CSIシーケンスと相互相関させるステップと、
前記相互相関結果から前記位相誤差を決定するステップと
を更に有する、請求項1記載の方法。 - CSI情報を供給するよう前記補正信号を処理するステップを更に有する請求項4記載の方法。
- CSI情報が生成されるようにイコライズ信号を供給するよう前記補正信号を等化するステップを更に有する請求項4記載の方法。
- 前記スペクトルシフト信号を補正するステップは、前記決定された位相誤差に従って前記信号を回転させるステップを有する、請求項1記載の方法。
- 信号に作用して、多数のサンプルを有するFFT出力信号を供給する高速フーリエ変換(FFT)と、
スペクトルシフト信号を供給するよう前記FFT出力信号に含まれるサンプルを並べ替えるスペクトルシフタと、
前記FFT出力信号から位相誤差を推定し、推定された前記位相誤差に従って前記スペクトルシフト信号の位相を補正する位相補正器と
を有する装置。 - 前記位相誤差はコモンフェーズエラーを表す、請求項8記載の装置。
- 前記位相補正器は、
前記FFT出力信号での予めシフトされた連続パイロット(CP)の位置を記憶するメモリと、
前記予めシフトされたCP及びチャネルステート情報(CSI)から得られる予めシフトされ且つ改変されたCPを記憶するメモリと、
前記位相誤差を推定する際に使用され、前記FFT出力信号と前記予めシフトされ且つ改変されたCPを相互相関させる相互相関器と
を有する、請求項8記載の装置。 - 前記推定された位相誤差に従って前記スペクトルシフト信号の位相を補正する回転器を更に有する請求項8記載の装置。
- 位相を補正された前記スペクトルシフト信号を等化し、前記CSIを供給するイコライザを更に有する請求項8記載の装置。
- 前記信号を供給するよう受信信号をダウンコンバートするダウンコンバータを更に有する請求項8記載の装置。
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PCT/CN2007/002033 WO2009003306A1 (en) | 2007-06-29 | 2007-06-29 | Apparatus and method for removing common phase error in a dvb-t/h receiver |
Publications (2)
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JP2010532114A JP2010532114A (ja) | 2010-09-30 |
JP4961038B2 true JP4961038B2 (ja) | 2012-06-27 |
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JP2010513607A Active JP4961038B2 (ja) | 2007-06-29 | 2007-06-29 | Dvb−t/h受信器でコモンフェーズエラーを除去する装置及び方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8401097B2 (ja) |
EP (1) | EP2171896A4 (ja) |
JP (1) | JP4961038B2 (ja) |
KR (1) | KR101395686B1 (ja) |
CN (1) | CN101689952B (ja) |
BR (1) | BRPI0721774B1 (ja) |
WO (1) | WO2009003306A1 (ja) |
Families Citing this family (8)
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US8559490B2 (en) * | 2007-06-29 | 2013-10-15 | Thomson Licensing | Apparatus and method for removing common phase error in a DVB-T/H receiver |
BRPI0721774B1 (pt) | 2007-06-29 | 2020-01-28 | Interdigital Madison Patent Holdings | aparelho e método para remoção de erro de fase característico em um receptor tipo dvb-t/h |
KR101521881B1 (ko) * | 2009-04-24 | 2015-05-21 | 삼성전자주식회사 | 무선통신시스템에서 위상 에러를 보상하기 위한 장치 및 방법 |
TWI429295B (zh) * | 2009-05-20 | 2014-03-01 | Mstar Semiconductor Inc | 用來偵測一數位資料串流的電路及相關方法 |
JP2012227848A (ja) * | 2011-04-22 | 2012-11-15 | Sony Corp | 受信装置、受信方法、プログラム、および受信システム |
US10218548B1 (en) * | 2018-01-24 | 2019-02-26 | National Instruments Corporation | Wireless radio receiver that performs adaptive phase tracking |
US10218549B1 (en) | 2018-01-24 | 2019-02-26 | National Instruments Corporation | Wireless radio receiver that performs adaptive phase tracking |
CN109194594B (zh) * | 2018-08-28 | 2020-12-18 | 电子科技大学 | 一种基于连续载波聚合的相位噪声抑制方法 |
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-
2007
- 2007-06-29 BR BRPI0721774A patent/BRPI0721774B1/pt active IP Right Grant
- 2007-06-29 KR KR1020097027310A patent/KR101395686B1/ko active IP Right Grant
- 2007-06-29 WO PCT/CN2007/002033 patent/WO2009003306A1/en active Application Filing
- 2007-06-29 US US12/452,407 patent/US8401097B2/en active Active
- 2007-06-29 CN CN2007800535758A patent/CN101689952B/zh active Active
- 2007-06-29 EP EP07721600A patent/EP2171896A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
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BRPI0721774B1 (pt) | 2020-01-28 |
EP2171896A4 (en) | 2012-06-06 |
KR20100024447A (ko) | 2010-03-05 |
US8401097B2 (en) | 2013-03-19 |
WO2009003306A1 (en) | 2009-01-08 |
BRPI0721774A2 (pt) | 2013-04-02 |
JP2010532114A (ja) | 2010-09-30 |
EP2171896A1 (en) | 2010-04-07 |
CN101689952A (zh) | 2010-03-31 |
CN101689952B (zh) | 2013-06-05 |
KR101395686B1 (ko) | 2014-05-15 |
US20100119013A1 (en) | 2010-05-13 |
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