JP2007511126A - 周波数オフセットエラーを決定する装置及びそれに基づく受信機 - Google Patents
周波数オフセットエラーを決定する装置及びそれに基づく受信機 Download PDFInfo
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- JP2007511126A JP2007511126A JP2006537473A JP2006537473A JP2007511126A JP 2007511126 A JP2007511126 A JP 2007511126A JP 2006537473 A JP2006537473 A JP 2006537473A JP 2006537473 A JP2006537473 A JP 2006537473A JP 2007511126 A JP2007511126 A JP 2007511126A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
- H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
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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
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
- H04L25/062—Setting decision thresholds using feedforward techniques only
-
- 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
- H04L27/12—Modulator circuits; Transmitter circuits
-
- 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
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/142—Compensating direct current components occurring during the demodulation and which are caused by mistuning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/003—Correction of carrier offset at baseband only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0063—Elements of loops
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0083—Signalling arrangements
- H04L2027/0089—In-band signals
- H04L2027/0093—Intermittant signals
- H04L2027/0095—Intermittant signals in a preamble or similar structure
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
Claims (16)
- 周波数オフセットエラーを決定する装置であって、デジタルコード化された周波数復調信号を受信する入力を有し、該周波数復調信号が、
−相関基準が満たされているかを決定するため相関を行うデジタル手段と、
−最小最大基準が満たされているかを決定するため最小最大評価を行うデジタル手段とにより処理され、
該装置は更に、前記周波数復調信号の現在のオフセットを計算し、両方の基準が満たされる場合前記現在のオフセットを打ち消すデジタル処理手段を有する装置。 - 相関を行う前記デジタル手段は、相関器と、ピーク検出器と、比較器とを有する、請求項1に記載の装置。
- 最小最大評価を行う前記デジタル手段は、2つの減算器と2つの比較器とを有する、請求項1又は2に記載の装置。
- 前記デジタル処理手段は、平均検出器と、オフセットレジスタと、前記オフセットレジスタに格納される前記現在のオフセットを前記周波数復調信号から減じるオフセット補償器とを有する、請求項1、2又は3に記載の装置。
- 相関を行う前記デジタル手段と最小最大評価を行う前記デジタル手段とは共に、前記デジタル処理手段が前記現在のオフセットを打ち消すことをもたらすよう、前記デジタル処理手段に信号を与える、請求項1に記載の装置。
- 周波数偏移変調された変調信号から前記周波数復調信号を抽出するよう構成された構成ブロックが後段に続き、リミッタとして機能する2つの比較器を有する、請求項1に記載の装置。
- 相関を行う前記デジタル手段が、
−前記周波数復調信号を時間有限のサイン波信号と相関させ、
−該相関の結果が特定の閾値を超えるかどうかを決定する、請求項1又は2に記載の装置。 - 相関を行う前記デジタル手段は、知られたシーケンスに対する基準が満たされていることを示す出力信号を与える、請求項1に記載の装置。
- 最小最大評価を行う前記デジタル手段は、前記周波数復調信号の正及び負の半波における予想ピークが所定の距離を持つかどうかを決定する、請求項1に記載の装置。
- 最小最大評価を行う前記デジタル手段は、4つの受信シンボルを対応する振幅と比較するために、2つの減算を計算する、請求項1に記載の装置。
- 前記周波数復調信号は、デジタルコード化された信号である、請求項1乃至10のいずれか一項に記載の装置。
- 前記オフセット補償器は、前記オフセットレジスタに格納された値を前記周波数復調信号から連続的に減じるために使用される、請求項4に記載の装置。
- 前記平均検出器は、前記周波数復調信号の平均値を連続的に生成するスライディング平均検出器である、請求項4に記載の装置。
- 請求項1乃至13の1つ又は複数に記載の装置を有する受信機。
- アナログフロントエンドとデジタルバックエンドとを有し、前記装置が、前記デジタルバックエンドの一部である周波数オフセットエラーを決定する、請求項14に記載の受信機。
- FSK又はGFSK変調されたアンテナ信号を受信し及び処理するようデザインされる、請求項14又は15に記載の受信機。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03300192 | 2003-11-03 | ||
EP03300192.6 | 2003-11-03 | ||
PCT/IB2004/003562 WO2005043852A1 (en) | 2003-11-03 | 2004-10-29 | Apparatus for determining a frequency offset error and receiver based thereon |
Publications (2)
Publication Number | Publication Date |
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JP2007511126A true JP2007511126A (ja) | 2007-04-26 |
JP4807645B2 JP4807645B2 (ja) | 2011-11-02 |
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JP2006537473A Expired - Fee Related JP4807645B2 (ja) | 2003-11-03 | 2004-10-29 | 周波数オフセットエラーを決定する装置及びそれに基づく受信機 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7733991B2 (ja) |
EP (1) | EP1683316B1 (ja) |
JP (1) | JP4807645B2 (ja) |
KR (1) | KR101096635B1 (ja) |
CN (1) | CN1879373B (ja) |
AT (1) | ATE381837T1 (ja) |
DE (1) | DE602004010840T2 (ja) |
WO (1) | WO2005043852A1 (ja) |
Cited By (2)
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JP2010041138A (ja) * | 2008-07-31 | 2010-02-18 | Icom Inc | Fsk受信機 |
JP2012175291A (ja) * | 2011-02-18 | 2012-09-10 | Lapis Semiconductor Co Ltd | Fsk復調回路 |
Families Citing this family (16)
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JP4807645B2 (ja) | 2003-11-03 | 2011-11-02 | エスティー‐エリクソン、ソシエテ、アノニム | 周波数オフセットエラーを決定する装置及びそれに基づく受信機 |
CA2544803A1 (en) * | 2003-11-11 | 2005-05-19 | Ciba Specialty Chemicals Holding Inc. | Pigment compositions for oil-based lithographic printing ink systems |
CN101651644B (zh) * | 2008-08-12 | 2012-09-05 | 博通集成电路(上海)有限公司 | 用于解调被调制信号的电路和方法 |
JP5356060B2 (ja) * | 2009-02-13 | 2013-12-04 | シャープ株式会社 | 受信装置、通信システム、受信方法及び通信方法 |
TW201032517A (en) * | 2009-02-17 | 2010-09-01 | Ralink Technology Corp | Packet detection method for wireless communication device and related device |
JP5579536B2 (ja) * | 2009-09-03 | 2014-08-27 | 富士フイルム株式会社 | 着色硬化性組成物及びその調製方法、カラーフィルタ及びその製造方法、並びに固体撮像素子 |
US8500071B2 (en) | 2009-10-27 | 2013-08-06 | Invensys Rail Corporation | Method and apparatus for bi-directional downstream adjacent crossing signaling |
US8660215B2 (en) * | 2010-03-16 | 2014-02-25 | Siemens Rail Automation Corporation | Decoding algorithm for frequency shift key communications |
CN102694571A (zh) * | 2012-06-25 | 2012-09-26 | 上海高清数字科技产业有限公司 | 载波频率偏差估计的方法及系统 |
CN104469236B (zh) * | 2013-09-25 | 2017-11-07 | 扬智科技股份有限公司 | 采样频偏的纠正装置与纠正方法 |
CN104980177B (zh) * | 2015-06-12 | 2017-05-17 | 清华大学 | 一种用于零中频gfsk解调器中的位同步电路 |
KR101824399B1 (ko) * | 2015-12-30 | 2018-02-01 | 어보브반도체 주식회사 | 개선된 패킷 검출 및 심볼 타이밍 포착 기법을 사용하는 블루투스 수신 방법 및 장치 |
CN107707323B (zh) * | 2017-07-10 | 2019-05-28 | 深圳市锐能微科技股份有限公司 | 一种时钟校准的方法及时钟校准设备 |
US11431092B1 (en) | 2019-05-14 | 2022-08-30 | Space Exploration Technologies Corp. | Near zero intermediate frequency (NZIF) compensation of local oscillator leakage |
CN113411093B (zh) * | 2020-03-17 | 2022-04-08 | 瑞昱半导体股份有限公司 | 具有抗射频干扰机制的信号接收装置及方法 |
US20220352636A1 (en) | 2020-07-05 | 2022-11-03 | Space Exploration Technologies Corp. | Stack patch antenna assembly |
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2004
- 2004-10-29 JP JP2006537473A patent/JP4807645B2/ja not_active Expired - Fee Related
- 2004-10-29 DE DE602004010840T patent/DE602004010840T2/de active Active
- 2004-10-29 CN CN2004800327465A patent/CN1879373B/zh not_active Expired - Fee Related
- 2004-10-29 WO PCT/IB2004/003562 patent/WO2005043852A1/en active IP Right Grant
- 2004-10-29 KR KR1020067010864A patent/KR101096635B1/ko not_active IP Right Cessation
- 2004-10-29 AT AT04769760T patent/ATE381837T1/de not_active IP Right Cessation
- 2004-10-29 EP EP04769760A patent/EP1683316B1/en not_active Not-in-force
- 2004-10-29 US US10/577,978 patent/US7733991B2/en not_active Expired - Fee Related
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JP2012175291A (ja) * | 2011-02-18 | 2012-09-10 | Lapis Semiconductor Co Ltd | Fsk復調回路 |
Also Published As
Publication number | Publication date |
---|---|
KR20060128882A (ko) | 2006-12-14 |
EP1683316B1 (en) | 2007-12-19 |
EP1683316A1 (en) | 2006-07-26 |
CN1879373B (zh) | 2011-01-19 |
DE602004010840T2 (de) | 2008-12-11 |
KR101096635B1 (ko) | 2011-12-30 |
ATE381837T1 (de) | 2008-01-15 |
JP4807645B2 (ja) | 2011-11-02 |
WO2005043852A1 (en) | 2005-05-12 |
WO2005043852A9 (en) | 2006-04-13 |
CN1879373A (zh) | 2006-12-13 |
DE602004010840D1 (de) | 2008-01-31 |
US20070041479A1 (en) | 2007-02-22 |
US7733991B2 (en) | 2010-06-08 |
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