BR9906755A - Dispositivo e processo de controle automático de frequência em um terminal de modo duplo - Google Patents
Dispositivo e processo de controle automático de frequência em um terminal de modo duploInfo
- Publication number
- BR9906755A BR9906755A BR9906755-2A BR9906755A BR9906755A BR 9906755 A BR9906755 A BR 9906755A BR 9906755 A BR9906755 A BR 9906755A BR 9906755 A BR9906755 A BR 9906755A
- Authority
- BR
- Brazil
- Prior art keywords
- frequency
- mode terminal
- dual
- frequency control
- errors
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- 230000009977 dual effect Effects 0.000 abstract 2
- 238000013139 quantization Methods 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
Classifications
-
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
- H03J2200/02—Algorithm used as input for AFC action alignment receiver
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
-
- 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
- H04L2027/0065—Frequency error detectors
-
- 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
- H04L2027/0071—Control of loops
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
''DISPOSITIVO E PROCESSO DE CONTROLE AUTOMáTICO DE FREQuêNCIA EM UM TERMINAL DE MODO DUPLO''. Um dispositivo AFC (controle automático de freq³ência) e um método de controle de freq³ência de recepção em um terminal de modo duplo. Quando um terminal de modo duplo utiliza um ou dois circuitos AFC, o tempo exigido para obter sincronização de rastreamento em um circuito PLL para uma freq³ência pode ser reduzido utilizando-se uma freq³ência aumento de teste que é um múltiplo inteiro da freq³ência residual de obtenção de sincronização de rastreamento de um circuito PLL para uma outra freq³ência para a qual a primeira freq³ência transita para obtenção confiável de sincronização. Erros com relação a uma faixa dinâmica de saída causados pelo uso de dois AFCs são reduzidos e então o desempenho de demodulação de um receptor é garantido pela variação dos bits de quantização de um relógio A/D com base na faixa dinâmica de erros residuais em uma área de freq³ência. O desempenho da demodulação pode também ser assegurado operando-se um circuito ACPE para um circuito AFC tendo muitos erros residuais de freq³ência. Neste processo, as características de freq³ência do terminal de modo duplo são estabilizadas e a estabilidade de uma demodulador é aumentada devido a um deslocamento de freq³ência. Como resultado, o desempenho estável do demodulador é garantido.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980036023A KR100274089B1 (ko) | 1998-09-02 | 1998-09-02 | 듀얼모드 단말기의 자동주파수 제어회로 및 방법 |
| PCT/KR1999/000508 WO2000014972A2 (en) | 1998-09-02 | 1999-09-02 | Afc device and method of controlling reception frequency in a dual-mode terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9906755A true BR9906755A (pt) | 2000-12-05 |
Family
ID=36442055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9906755-2A BR9906755A (pt) | 1998-09-02 | 1999-09-02 | Dispositivo e processo de controle automático de frequência em um terminal de modo duplo |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6356599B1 (pt) |
| EP (1) | EP1050109B1 (pt) |
| KR (1) | KR100274089B1 (pt) |
| CN (1) | CN1148875C (pt) |
| AU (1) | AU731874B2 (pt) |
| BR (1) | BR9906755A (pt) |
| CA (1) | CA2308621C (pt) |
| DE (1) | DE69928643T2 (pt) |
| WO (1) | WO2000014972A2 (pt) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6625431B1 (en) * | 1999-12-17 | 2003-09-23 | Funai Electronics, Co.. Ltd. | Tuner device |
| US6992990B2 (en) * | 2000-07-17 | 2006-01-31 | Sony Corporation | Radio communication apparatus |
| DE10064929A1 (de) * | 2000-12-23 | 2002-07-04 | Alcatel Sa | Verfahren und Kompensationsmodul zur Phasenkompensation von Taktsignalen |
| US6999536B1 (en) * | 2001-04-19 | 2006-02-14 | Rockwell Collins | System for phase error estimation for a quadrature modulator |
| US7817977B1 (en) * | 2005-05-26 | 2010-10-19 | Qualcomm Incorporated | Configurable signal generator |
| KR100668910B1 (ko) * | 2006-02-15 | 2007-01-12 | 삼성전자주식회사 | 전세계 위치 확인 시스템을 이용한 이동 단말의 기준시계공유 장치 및 방법 |
| CN100454937C (zh) * | 2006-02-27 | 2009-01-21 | 宇龙计算机通信科技(深圳)有限公司 | 移动通信终端的通话录音方法 |
| EP1919103B8 (en) * | 2006-11-02 | 2016-11-30 | Google Technology Holdings LLC | Method and apparatus for automatic frequency correction in a multimode device |
| KR101149869B1 (ko) * | 2007-08-10 | 2012-05-25 | 삼성전자주식회사 | 이동통신 단말기에서 멀티 주파수를 지원하기 위한 동기획득 방법 및 장치 |
| CN101150819B (zh) * | 2007-11-12 | 2011-09-28 | 北京天碁科技有限公司 | 一种自动多模移动通信终端及其自动频率控制方法 |
| US9071493B2 (en) * | 2009-06-29 | 2015-06-30 | Qualcomm Incorporated | Dual frequency tracking loop for OFDMA systems |
| CN101959300B (zh) * | 2010-04-02 | 2013-05-15 | 展讯通信（上海）有限公司 | 双模终端的自动频率控制方法及双模终端 |
| US8570079B2 (en) | 2011-09-07 | 2013-10-29 | International Business Machines Corporation | Reducing phase locked loop phase lock time |
| US8923778B2 (en) | 2012-08-20 | 2014-12-30 | Google Technology Holdings LLC | Method for automatic frequency correction in a multi-carrier communications device |
| CN106375058A (zh) * | 2016-09-09 | 2017-02-01 | 青岛海信宽带多媒体技术有限公司 | 光模块 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE463540B (sv) * | 1988-09-19 | 1990-12-03 | Ericsson Telefon Ab L M | Saett foer att i ett radiokommunikationssystem digitalisera godtyckliga radiosignaler samt anordning foer utoevande av saettet |
| US5163159A (en) * | 1990-07-30 | 1992-11-10 | Motorola, Inc. | Dual mode automatic frequency control |
| US5535432A (en) * | 1994-09-14 | 1996-07-09 | Ericsson Ge Mobile Communications Inc. | Dual-mode satellite/cellular phone with a frequency synthesizer |
| US5982819A (en) | 1996-09-23 | 1999-11-09 | Motorola, Inc. | Modulation format adaptive messaging receiver and method thereof |
| FI108486B (fi) * | 1997-01-31 | 2002-01-31 | Nokia Corp | Menetelmõ ja piirijõrjestely vastaanotettujen signaalien kõsittelemiseksi tiedonsiirtojõrjestelmõssõ |
| US6072996A (en) | 1997-03-28 | 2000-06-06 | Intel Corporation | Dual band radio receiver |
| US6125266A (en) * | 1997-12-31 | 2000-09-26 | Nokia Mobile Phones Limited | Dual band architectures for mobile stations having transmitter linearization feedback |
-
1998
- 1998-09-02 KR KR1019980036023A patent/KR100274089B1/ko not_active IP Right Cessation
-
1999
- 1999-09-02 CN CNB998015105A patent/CN1148875C/zh not_active Expired - Fee Related
- 1999-09-02 BR BR9906755-2A patent/BR9906755A/pt not_active Application Discontinuation
- 1999-09-02 CA CA002308621A patent/CA2308621C/en not_active Expired - Fee Related
- 1999-09-02 AU AU55322/99A patent/AU731874B2/en not_active Ceased
- 1999-09-02 EP EP99941839A patent/EP1050109B1/en not_active Expired - Lifetime
- 1999-09-02 US US09/389,287 patent/US6356599B1/en not_active Expired - Lifetime
- 1999-09-02 WO PCT/KR1999/000508 patent/WO2000014972A2/en active IP Right Grant
- 1999-09-02 DE DE69928643T patent/DE69928643T2/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1050109B1 (en) | 2005-11-30 |
| AU5532299A (en) | 2000-03-27 |
| AU731874B2 (en) | 2001-04-05 |
| DE69928643T2 (de) | 2006-06-08 |
| CN1277757A (zh) | 2000-12-20 |
| KR20000018442A (en) | 2000-04-06 |
| WO2000014972A3 (en) | 2000-06-02 |
| CA2308621A1 (en) | 2000-03-16 |
| DE69928643D1 (de) | 2006-01-05 |
| CN1148875C (zh) | 2004-05-05 |
| KR100274089B1 (ko) | 2000-12-15 |
| WO2000014972A2 (en) | 2000-03-16 |
| EP1050109A2 (en) | 2000-11-08 |
| US6356599B1 (en) | 2002-03-12 |
| CA2308621C (en) | 2002-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
| B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
| B11B | Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements |