JP2006013748A - 受信用lsi - Google Patents
受信用lsi Download PDFInfo
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- JP2006013748A JP2006013748A JP2004185934A JP2004185934A JP2006013748A JP 2006013748 A JP2006013748 A JP 2006013748A JP 2004185934 A JP2004185934 A JP 2004185934A JP 2004185934 A JP2004185934 A JP 2004185934A JP 2006013748 A JP2006013748 A JP 2006013748A
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- 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
- H04L1/0064—Concatenated codes
- H04L1/0065—Serial concatenated codes
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- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/0871—Hybrid systems, i.e. switching and combining using different reception schemes, at least one of them being a diversity reception scheme
-
- 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
- H04L1/0045—Arrangements at the receiver end
-
- 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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
- H04L1/203—Details of error rate determination, e.g. BER, FER or WER
-
- 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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
- H04L1/208—Arrangements for detecting or preventing errors in the information received using signal quality detector involving signal re-encoding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Radio Transmission System (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Error Detection And Correction (AREA)
Abstract
【解決手段】 本発明の受信用LSIは、独立した2つのアンテナ11および12からの受信信号をビット列からなる入力信号13に変換する復調部14と、入力信号13を畳込み符号に基づいてビタビ復号した出力信号16を生成するビタビ復号部17と、出力信号16を再符号化した基準信号と入力信号13を比較して、入力信号13の誤り率を求め、当該誤り率に基づいて入力信号13の品質を示す判定信号18を出力する受信品質判定部19と、判定信号18に基づいて、復調部14の一部の回路への電源供給またはクロック供給を停止する制御手段とを有することを特徴とする。
【選択図】 図1
Description
14 復調部
17 ビタビ復号部
18、23 判定信号
19、24 受信品質判定部
21 出力信号
22 リードソロモン復号部
27 メインCPU
29 制御信号
30、31 ADC
32 CDM
Claims (5)
- 独立した2つのアンテナからの受信信号を該2つの受信信号系の回路を介してビット列からなる入力信号に変換する復調手段と、
前記入力信号を誤り訂正符号に基づいて復号した出力信号を生成する復号手段と、
前記出力信号を再符号化した基準信号と前記入力信号を比較して、前記入力信号の誤り率を求め、当該誤り率に基づいて前記入力信号の品質を示す判定信号を出力する判定手段と、
前記判定信号に基づいて、前記2つの受信信号のうちいずれかまたは双方を選択し、前記復調手段における選択されなかった受信信号系の回路への電源供給またはクロック供給を停止する制御手段とを有することを特徴とする受信用LSI。 - 前記復調手段は、前記2つの受信信号系の回路として前記2つのアンテナからの受信信号それぞれのサンプリングおよび量子化を行いデジタル信号を出力する第1および第2のアナログ−デジタル変換手段を有し、
前記第1または前記第2のアナログ−デジタル変換手段は、前記判定手段からの前記判定信号に対応して前記制御手段により非動作状態に設定されることを特徴とする請求項1に記載の受信用LSI。 - 前記復調手段は、前記2つの受信信号系の回路として前記第1のアナログ−デジタル変換手段からの前記デジタル信号または前記第2のアナログ−デジタル変換手段からの前記デジタル信号または双方からの前記デジタル信号を選択し、その選択されたデジタル信号に基づいて前記入力信号を生成する選択変換手段をさらに有し、
前記選択変換手段は、前記判定手段からの前記判定信号に基づいて、前記制御手段によりその一部が非動作状態に設定されることを特徴とする請求項2に記載の受信用LSI。 - 前記判定手段が出力する前記判定信号は、前記誤り率が0%である場合と0%でない場合に応じた前記入力信号の品質を示す信号であることを特徴とする請求項1乃至請求項3いずれか1項に記載の受信用LSI。
- 前記制御手段は、前記誤り率が0%の時の前記判定信号に基づいて、前記復調手段における前記2つの受信信号系のうちの一方への電源供給またはクロック供給を停止させ、前記誤り率が0%でない時の前記判定信号に基づいて、前記復調回路における前記2つの受信信号系の回路の双方に対して電源供給またはクロック供給を行うよう制御することを特徴とする請求項4に記載の受信用LSI。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004185934A JP4458953B2 (ja) | 2004-06-24 | 2004-06-24 | 受信用lsi |
US11/159,338 US7457383B2 (en) | 2004-06-24 | 2005-06-23 | Receiving LSI device and receiver using the same |
KR1020050054440A KR100639286B1 (ko) | 2004-06-24 | 2005-06-23 | 수신용 lsi 디바이스 및 수신기 |
CN2005100823739A CN1713560B (zh) | 2004-06-24 | 2005-06-24 | 接收用lsi器件及接收设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004185934A JP4458953B2 (ja) | 2004-06-24 | 2004-06-24 | 受信用lsi |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006013748A true JP2006013748A (ja) | 2006-01-12 |
JP4458953B2 JP4458953B2 (ja) | 2010-04-28 |
Family
ID=35505724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004185934A Expired - Fee Related JP4458953B2 (ja) | 2004-06-24 | 2004-06-24 | 受信用lsi |
Country Status (4)
Country | Link |
---|---|
US (1) | US7457383B2 (ja) |
JP (1) | JP4458953B2 (ja) |
KR (1) | KR100639286B1 (ja) |
CN (1) | CN1713560B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8189135B2 (en) | 2008-05-27 | 2012-05-29 | Lg Electronics Inc. | LED back-light unit and liquid crystal display device using the same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101437157B1 (ko) * | 2006-10-10 | 2014-09-03 | 엘지전자 주식회사 | 다중 안테나를 이용한 고속 무선 패킷 통신 방법 및 그단말기 |
US8005446B2 (en) * | 2007-02-05 | 2011-08-23 | Research In Motion Limited | Apparatus, and associated method, for operating upon received data at a receiving station capable of diversity operation |
US8078094B1 (en) * | 2007-03-21 | 2011-12-13 | At&T Mobility Ii Llc | Universal multi-purpose RF signal distribution system |
FR2932628B1 (fr) * | 2008-06-17 | 2010-06-11 | Canon Kk | Procede et dispositif de decodage par commutation d'un mode multicopies vers un mode monocopie, produit programme d'ordinateur et moyen de stockage correspondants |
GB2508165B (en) * | 2012-11-21 | 2015-03-18 | Broadcom Corp | Signal selection in a receiver |
EP2736187B1 (en) * | 2012-11-22 | 2017-03-08 | Nxp B.V. | Wireless receiver circuit and method |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4018044A1 (de) * | 1990-06-06 | 1991-12-12 | Philips Patentverwaltung | Empfaenger mit mindestens zwei empfangszweigen |
US5781592A (en) * | 1993-09-28 | 1998-07-14 | Kabushiki Kaisha Toshiba | Selective diversity system |
US5566364A (en) * | 1994-01-31 | 1996-10-15 | Nec Corporation | Power saving portable radio communication device with diversity reception |
JP2817707B2 (ja) * | 1996-05-15 | 1998-10-30 | 日本電気株式会社 | 無線選択呼出し受信機付き携帯情報端末装置 |
JP2000196512A (ja) * | 1998-12-25 | 2000-07-14 | Nec Mobile Commun Ltd | 移動体通信装置のダイバ―シチ制御回路およびダイバ―シチ制御方法 |
JP3389153B2 (ja) | 1999-06-16 | 2003-03-24 | 埼玉日本電気株式会社 | 携帯電話機のダイバーシチ制御装置及びそのダイバーシチ制御方法 |
US7024168B1 (en) * | 1999-07-07 | 2006-04-04 | Telefonaktiebolaget L M Ericsson (Publ) | Controlled antenna diversity |
US6678508B1 (en) * | 2000-02-07 | 2004-01-13 | Ericsson Inc. | Power conservation method for mobile communications device with two receivers |
JP2002043990A (ja) * | 2000-07-21 | 2002-02-08 | Mitsubishi Electric Corp | 無線通信用受信装置 |
JP2003283413A (ja) | 2002-03-22 | 2003-10-03 | Toshiba Corp | Cdm受信装置とそのパワーセーブ方法 |
FR2844407B1 (fr) * | 2002-09-05 | 2004-12-03 | Thomson Licensing Sa | Procede de selection de canal de transmission et recepteur de signaux a diversite d'antenne |
-
2004
- 2004-06-24 JP JP2004185934A patent/JP4458953B2/ja not_active Expired - Fee Related
-
2005
- 2005-06-23 KR KR1020050054440A patent/KR100639286B1/ko not_active IP Right Cessation
- 2005-06-23 US US11/159,338 patent/US7457383B2/en not_active Expired - Fee Related
- 2005-06-24 CN CN2005100823739A patent/CN1713560B/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8189135B2 (en) | 2008-05-27 | 2012-05-29 | Lg Electronics Inc. | LED back-light unit and liquid crystal display device using the same |
Also Published As
Publication number | Publication date |
---|---|
CN1713560B (zh) | 2010-11-03 |
US7457383B2 (en) | 2008-11-25 |
CN1713560A (zh) | 2005-12-28 |
JP4458953B2 (ja) | 2010-04-28 |
KR20060048491A (ko) | 2006-05-18 |
US20050286658A1 (en) | 2005-12-29 |
KR100639286B1 (ko) | 2006-10-30 |
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