CN1083638C - 解调已调信号的装置和方法 - Google Patents
解调已调信号的装置和方法 Download PDFInfo
- Publication number
- CN1083638C CN1083638C CN97191470A CN97191470A CN1083638C CN 1083638 C CN1083638 C CN 1083638C CN 97191470 A CN97191470 A CN 97191470A CN 97191470 A CN97191470 A CN 97191470A CN 1083638 C CN1083638 C CN 1083638C
- Authority
- CN
- China
- Prior art keywords
- signal
- output
- demodulator
- modulated signal
- coherent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
-
- 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
Abstract
Description
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/734,225 US5767738A (en) | 1996-10-21 | 1996-10-21 | Apparatus and method for demodulating a modulated signal |
US08/734,225 | 1996-10-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1206514A CN1206514A (zh) | 1999-01-27 |
CN1083638C true CN1083638C (zh) | 2002-04-24 |
Family
ID=24950801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN97191470A Expired - Fee Related CN1083638C (zh) | 1996-10-21 | 1997-08-13 | 解调已调信号的装置和方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5767738A (zh) |
JP (1) | JP3492705B2 (zh) |
KR (1) | KR100412292B1 (zh) |
CN (1) | CN1083638C (zh) |
BR (1) | BR9706879A (zh) |
CA (1) | CA2238329C (zh) |
FI (1) | FI981309A (zh) |
WO (1) | WO1998018202A1 (zh) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2798129B2 (ja) * | 1996-08-26 | 1998-09-17 | 日本電気株式会社 | チャープスペクトラム拡散信号多重化装置用送信装置及び受信装置 |
US5912876A (en) * | 1997-01-15 | 1999-06-15 | Ericsson, Inc. | Method and apparatus for channel estimation |
US6072785A (en) * | 1997-03-04 | 2000-06-06 | At&T Corp | Differential PSK signalling in CDMA networks |
US6788708B1 (en) * | 1997-03-30 | 2004-09-07 | Intel Corporation | Code synchronization unit and method |
US6215813B1 (en) * | 1997-12-31 | 2001-04-10 | Sony Corporation | Method and apparatus for encoding trellis coded direct sequence spread spectrum communication signals |
US6233271B1 (en) * | 1997-12-31 | 2001-05-15 | Sony Corporation | Method and apparatus for decoding trellis coded direct sequence spread spectrum communication signals |
US5974079A (en) * | 1998-01-26 | 1999-10-26 | Motorola, Inc. | Method and apparatus for encoding rate determination in a communication system |
FR2782587B1 (fr) * | 1998-08-20 | 2000-09-22 | France Telecom | Procedes de communications numeriques amrc a repartition des symboles de reference |
US6356605B1 (en) * | 1998-10-07 | 2002-03-12 | Texas Instruments Incorporated | Frame synchronization in space time block coded transmit antenna diversity for WCDMA |
CA2282800C (en) * | 1998-11-09 | 2007-07-31 | Lucent Technologies Inc. | A coherent combining/noncoherent detection (ccnd) method and apparatus for detecting a pilot signal in a wireless communication system |
US6169887B1 (en) * | 1999-03-02 | 2001-01-02 | Motorola, Inc. | Range extension within a communication system |
US6580930B1 (en) | 1999-04-15 | 2003-06-17 | Ericsson, Inc. | Signal detector selector and method for selecting a detector |
AU6388699A (en) * | 1999-09-13 | 2001-04-17 | Sony Electronics Inc. | Method and apparatus for decoding trellis coded direct sequence spread spectrum communication signals |
GB2354403B (en) * | 1999-09-16 | 2004-02-11 | Ericsson Telefon Ab L M | Communication systems |
US6683903B1 (en) | 2000-04-27 | 2004-01-27 | Motorola, Inc. | Method and apparatus for synchronization within a spread-spectrum communication system |
US7443826B1 (en) * | 2000-10-04 | 2008-10-28 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for automatic frequency control in a CDMA receiver |
US6542483B1 (en) * | 2000-11-08 | 2003-04-01 | Motorola, Inc. | Method and an apparatus for Eb/Nt estimation for forward power control in spread spectrum communications systems |
US20020122468A1 (en) * | 2001-01-12 | 2002-09-05 | Terion, Inc. | Quasi orthogonal hybrid walsh-PN codes for CDMA application in HF modems |
US8755473B2 (en) * | 2001-01-29 | 2014-06-17 | Ipr Licensing, Inc. | Method and apparatus for detecting rapid changes in signaling path environment |
JP3880358B2 (ja) * | 2001-10-04 | 2007-02-14 | シャープ株式会社 | Ofdm復調回路及びこれを用いたofdm受信装置 |
US7286481B2 (en) * | 2002-12-17 | 2007-10-23 | Intel Corporation | Wireless network adapted to transmit channel side information and method thereof |
JP4326015B2 (ja) * | 2004-06-17 | 2009-09-02 | パイオニア株式会社 | 受信装置及び受信方法 |
US7310391B2 (en) * | 2005-08-12 | 2007-12-18 | At&T Corp. | De-modulation of MOK(M-ary orthogonal modulation) |
US20070110140A1 (en) * | 2005-11-14 | 2007-05-17 | Ipwireless, Inc. | Automatic selection of coherent and noncoherent transmission in a wireless communication system |
US7949073B2 (en) * | 2007-02-28 | 2011-05-24 | Freescale Semiconductor, Inc. | Dual-mode system and method for receiving wireless signals |
US8433991B2 (en) | 2010-06-16 | 2013-04-30 | Qualcomm Incorporated | Global Navigation Satellite System (GLONASS) data bit edge detection |
US8780958B2 (en) | 2010-08-27 | 2014-07-15 | Qualcomm Incorporated | Hybrid bit extraction for global position receiver |
US8619919B2 (en) | 2010-10-14 | 2013-12-31 | Qualcomm Incorporated | Selective coherent and non-coherent demodulation methods and apparatuses |
US9043044B2 (en) * | 2012-12-11 | 2015-05-26 | Electro-Motive Diesel, Inc. | System and method for communicating data in a consist |
WO2015065064A1 (ko) | 2013-10-30 | 2015-05-07 | 삼성전자주식회사 | 프리앰블 시퀀스를 전송하는 방법 및 장치 |
KR102240281B1 (ko) | 2015-04-10 | 2021-04-14 | 삼성전자주식회사 | 송신 신호를 검출하기 위한 장치 및 방법 |
CN114244669B (zh) * | 2021-11-12 | 2024-01-26 | 北京智芯微电子科技有限公司 | 主端、从端及其通信方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0574033A1 (en) * | 1990-02-16 | 1993-12-15 | Decisions Investments Corp. | Low leaking glazing system for space frame structures |
CN1115589A (zh) * | 1993-10-08 | 1996-01-24 | 摩托罗拉公司 | 恢复调频信号的方法 |
US5548243A (en) * | 1995-02-21 | 1996-08-20 | Icom Incorporated | Demodulator for demodulating a single side band signal, a real zero single side band signal and a frequency modulated signal, and a carrier signal reproducing circuit for the demodulator |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5214391A (en) * | 1989-12-06 | 1993-05-25 | Kabushiki Kaisha Toshiba | Demodulation apparatus having multipath detector for selecting a first or second demodulator |
WO1995013677A1 (en) * | 1993-11-09 | 1995-05-18 | Pacific Communication Sciences, Inc. | Method and apparatus for dual demodulation of mobile channel signals |
-
1996
- 1996-10-21 US US08/734,225 patent/US5767738A/en not_active Expired - Lifetime
-
1997
- 1997-08-13 BR BR9706879-9A patent/BR9706879A/pt unknown
- 1997-08-13 CA CA002238329A patent/CA2238329C/en not_active Expired - Fee Related
- 1997-08-13 WO PCT/US1997/014393 patent/WO1998018202A1/en not_active Application Discontinuation
- 1997-08-13 JP JP51933998A patent/JP3492705B2/ja not_active Expired - Fee Related
- 1997-08-13 KR KR10-1998-0704726A patent/KR100412292B1/ko not_active IP Right Cessation
- 1997-08-13 CN CN97191470A patent/CN1083638C/zh not_active Expired - Fee Related
-
1998
- 1998-06-08 FI FI981309A patent/FI981309A/fi unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0574033A1 (en) * | 1990-02-16 | 1993-12-15 | Decisions Investments Corp. | Low leaking glazing system for space frame structures |
CN1115589A (zh) * | 1993-10-08 | 1996-01-24 | 摩托罗拉公司 | 恢复调频信号的方法 |
US5548243A (en) * | 1995-02-21 | 1996-08-20 | Icom Incorporated | Demodulator for demodulating a single side band signal, a real zero single side band signal and a frequency modulated signal, and a carrier signal reproducing circuit for the demodulator |
Also Published As
Publication number | Publication date |
---|---|
KR100412292B1 (ko) | 2004-04-28 |
KR19990076622A (ko) | 1999-10-15 |
FI981309A0 (fi) | 1997-08-13 |
CN1206514A (zh) | 1999-01-27 |
CA2238329C (en) | 2001-03-27 |
US5767738A (en) | 1998-06-16 |
BR9706879A (pt) | 2000-01-25 |
JP3492705B2 (ja) | 2004-02-03 |
CA2238329A1 (en) | 1998-04-30 |
JP2000502554A (ja) | 2000-02-29 |
FI981309A (fi) | 1998-06-08 |
WO1998018202A1 (en) | 1998-04-30 |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: MOTOROLA MOBILE CO., LTD. Free format text: FORMER OWNER: MOTOROLA INC. Effective date: 20110112 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20110112 Address after: Illinois Instrunment Patentee after: MOTOROLA MOBILITY, Inc. Address before: Illinois Instrunment Patentee before: Motorola, Inc. |
|
C41 | Transfer of patent application or patent right or utility model | ||
C56 | Change in the name or address of the patentee | ||
CP01 | Change in the name or title of a patent holder |
Address after: Illinois State Patentee after: MOTOROLA MOBILITY LLC Address before: Illinois State Patentee before: MOTOROLA MOBILITY, Inc. |
|
CP02 | Change in the address of a patent holder |
Address after: Illinois State Patentee after: MOTOROLA MOBILITY, Inc. Address before: Illinois Instrunment Patentee before: MOTOROLA MOBILITY, Inc. |
|
TR01 | Transfer of patent right |
Effective date of registration: 20160620 Address after: California, USA Patentee after: Google Technology Holdings LLC Address before: Illinois State Patentee before: MOTOROLA MOBILITY LLC |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020424 Termination date: 20160813 |