CN100544330C - 去除信号中射频直流分量的方法及系统 - Google Patents
去除信号中射频直流分量的方法及系统 Download PDFInfo
- Publication number
- CN100544330C CN100544330C CNB2006101526772A CN200610152677A CN100544330C CN 100544330 C CN100544330 C CN 100544330C CN B2006101526772 A CNB2006101526772 A CN B2006101526772A CN 200610152677 A CN200610152677 A CN 200610152677A CN 100544330 C CN100544330 C CN 100544330C
- Authority
- CN
- China
- Prior art keywords
- signal
- radio frequency
- direct current
- component
- cancellation
- 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.)
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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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/30—Circuits for homodyne or synchrodyne receivers
-
- 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
- H04L25/063—Setting decision thresholds using feedback techniques only
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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)
Abstract
Description
射频直流大小 | DPCH工作点 | 相对零射频直流的性能损失 |
0 | -14.17dB | - |
25mv | -13.03dB | 1.14dB |
50mv | -10.78dB | 3.39dB |
1.0/32.0v | -12.59dB | 1.58dB |
1.0/64.0v | -13.00dB | 1.17dB |
1.0/128.0v | -13.95dB | 0.22dB |
1.0/256.0v | -14.05dB | 0.12dB |
1.0/512.0v | -14.11dB | 0.06dB |
1.0/1024.0v | -14.15dB | 0.02dB |
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2006101526772A CN100544330C (zh) | 2006-09-25 | 2006-09-25 | 去除信号中射频直流分量的方法及系统 |
US11/848,001 US7881687B2 (en) | 2006-09-25 | 2007-08-30 | Method and system for removing radio frequency direct current offset in signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2006101526772A CN100544330C (zh) | 2006-09-25 | 2006-09-25 | 去除信号中射频直流分量的方法及系统 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1968229A CN1968229A (zh) | 2007-05-23 |
CN100544330C true CN100544330C (zh) | 2009-09-23 |
Family
ID=38076782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2006101526772A Active CN100544330C (zh) | 2006-09-25 | 2006-09-25 | 去除信号中射频直流分量的方法及系统 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7881687B2 (zh) |
CN (1) | CN100544330C (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5599352B2 (ja) * | 2011-03-30 | 2014-10-01 | パナソニック株式会社 | 受信装置 |
CN102281218B (zh) * | 2011-08-18 | 2017-07-28 | 泰凌微电子(上海)有限公司 | 直流偏移消除系统及其方法 |
CN113364479B (zh) * | 2020-03-05 | 2023-01-17 | 海能达通信股份有限公司 | 一种直流偏置的消除方法、接收机及通信设备 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6434204B1 (en) * | 1999-03-04 | 2002-08-13 | Lucent Technologies Inc. | Method and system for DC offset correction of a quadrature modulated RF signal |
US6114980A (en) * | 1999-04-13 | 2000-09-05 | Motorola, Inc. | Method and apparatus for settling a DC offset |
US7167530B2 (en) * | 2002-01-11 | 2007-01-23 | Rf Micro Devices, Inc. | Estimation and correction of DC offset in the presence of frequency offset |
US7212586B2 (en) * | 2002-01-18 | 2007-05-01 | Broadcom Corporation | Direct conversion RF transceiver for wireless communications |
US6985711B2 (en) * | 2002-04-09 | 2006-01-10 | Qualcomm, Incorporated | Direct current offset cancellation for mobile station modems using direct conversion |
US7212797B2 (en) * | 2002-04-26 | 2007-05-01 | Qualcomm Incorporated | DC removal techniques for wireless networking |
US7079595B2 (en) * | 2002-04-29 | 2006-07-18 | Broadcom Corporation | Radio receiver having direct DC offset compensation |
US7136431B2 (en) * | 2002-10-24 | 2006-11-14 | Broadcom Corporation | DC offset correcting in a direct conversion or very low IF receiver |
US7215266B2 (en) * | 2004-05-21 | 2007-05-08 | Wionics Research | Hybrid DC offset cancellation scheme for wireless receiver |
-
2006
- 2006-09-25 CN CNB2006101526772A patent/CN100544330C/zh active Active
-
2007
- 2007-08-30 US US11/848,001 patent/US7881687B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20080076376A1 (en) | 2008-03-27 |
CN1968229A (zh) | 2007-05-23 |
US7881687B2 (en) | 2011-02-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210422 Address after: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Patentee after: Honor Device Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
|
CP03 | Change of name, title or address | ||
CP03 | Change of name, title or address |
Address after: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Patentee after: Honor Terminal Co.,Ltd. Country or region after: China Address before: 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong Patentee before: Honor Device Co.,Ltd. Country or region before: China |