TW466844B - An arrangement for reducing power dissipation in a line driver - Google Patents
An arrangement for reducing power dissipation in a line driver Download PDFInfo
- Publication number
- TW466844B TW466844B TW089100634A TW89100634A TW466844B TW 466844 B TW466844 B TW 466844B TW 089100634 A TW089100634 A TW 089100634A TW 89100634 A TW89100634 A TW 89100634A TW 466844 B TW466844 B TW 466844B
- Authority
- TW
- Taiwan
- Prior art keywords
- line driver
- voltage supply
- digital signal
- signal processor
- peak
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0244—Stepped control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/504—Indexing scheme relating to amplifiers the supply voltage or current being continuously controlled by a controlling signal, e.g. the controlling signal of a transistor implemented as variable resistor in a supply path for, an IC-block showed amplifier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Dc Digital Transmission (AREA)
- Logic Circuits (AREA)
- Transmitters (AREA)
- Electronic Switches (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Description
4668^4 五、發明說明(1) 技術範圍 本發明關於線驅動器,特別關於一配置以供降低連接至 多醫稱數位訂戶線)之線驅動器之功率 消耗。 '本#'明之背景 在多音系統中少如ADSL系統 > 資料資訊被隨機編碼成為 許多正弦音之相位及波幅^由線驅動器以所謂符號率或長 度之脈衝串在輸送線上發射,/在ADSL情況下,長度為 2 4 6 . 3 # s。 為使每一符號作傅里葉變換一在符號間插入所謂循環字 首。循環字首不含任何有效資料匕但可保證多音信號繼續 出現以供傅里葉變換。一’ 在A D S L狀況下:每一個循環字首之長度為3 2個抽樣或 1 5 // s。 由於每一個別音之相位及波幅可視為隨機V總信號由許 多音組成,待發射之總信號之峰至峰值電壓中連續符號間 必有甚大之差異。 因此,在正常ADSL系統中—連接至輸送線上以輸送多音 信號之線驅動器之供應電壓κ必須選擇使理論上最大峰值 可被發射,而不致限制。夕 此取可使線驅動器供應電壓對大部份待發射之符號言太 高。 。 結果,線驅動器中的功率消耗較必需之符號為高。 本發明之概述
O:\62\62298.PTD 第5頁 ^ fi6 B A ^_;_ 五、發明說明(2) 本發明之目的為提供一配置以降低此線驅動器之功率消-. ^ 耗。 〆 此目的之達成,主要係至線驅動器之供應電壓,在循環’ 字首期間,符號至符號均可控制:以響應次一發射之符號 之已知預之期峰至峰值。~··_ 以適應供應電壓於峰至峰值,線驅動器内之功率消耗可 * - _____ ^ .. ----------- - · 降低。 ' 之簡略說明 本發明將參考附圖詳予說明,圖1圖解說明在ADSL系統 發射之二連續符號,圖2說明一方塊圖,一ADSL之一端與 本發明一配置之實施例連接。 本發明之說明 / 圖1圖解說明在ADSL系統中發射之二連續符號S1及S2。 以已知方式,每一符號S1.及S2之前均有一循環字首CP1 及CP2分別前導。 / 在ADSL系統中,符號長度為2 4 6. 3从s ,而循環字首之長 度為3 2抽樣或1 5 # s如上所述d , 圖1中,符號S1之峰至峰值為U1,符號S2之峰至峰值為 U2,此值在圖1中為較U1為低之值。 w 圖1中說明之符號S 1及S 2由具有一恆值供應電壓之線驅 動器所發射,即使其不需同一電壓發射以便發射而無限 r . mjwKF*·*·*^***1**·' ..... ..收....·」.+r. „
制C Τ. ·ν . . 因此,不必要之功率已在該線驅動器内消耗。 圖2中,圖解說明本發明之一配置可降低在線驅動器内
O:\62\62298.PTD 第6頁
A668AA 五、發明說明(3) 之功率消耗。 圖2中,數位信號處理器1之數位輸入/輸出端點連至類 比前端之對應輸出/輸入端點,或線驅動器2連接至輸送 線3以發射及接收如圖1說明符號型式之資訊。^ 如所周知,線驅動器2包括一數位至類比轉換器(未示 出),以將自數位信號處理器1之數位信號轉換為類比信 號,以圖1之符號發射,及一類比至數位轉換器(未示 出),以轉換收到之類比符號為數位信號至數位信號處理 器 1。 亦以同樣方式,數位信號處理器1暸解待發射之每一符 號中之音調之峰值。 y 因此,數位信號處理器1在發射至線驅動器2之前,即已 有符號S1中之峰值U1,及圖1中符號S2之峰值U2。, 有此暸解後,數位信號處理器1可選擇最適當之供應電 壓至驅動器2以供每一符號之用。 - 圖2中說明可供此一電壓選擇之配置之實施例。V 圖2之實施例中,數位信號處理器1經由控制匯流排4連 接至一開關5,其適於供應不同供應電壓S V 1, S V 2 ,...
S V η至驅動器2的供應電壓輸入端點6,以響應控制匯流排4 上之自數位信號處理器1之不同控制信號。 V 應指出,在此連接中不同供應電壓不必固定,及以開關 供應,亦可用可控制之DC/DC轉換器(未示出)。7 無論如何,根據本發明,選擇適當之電壓供應至線驅動 器2發生在每一循環字首CP 1 ,CP2期間,即在無有關資訊
O:\62\62298.PTD 第7頁
O:\62\62298.PTD 第8頁
Claims (1)
- 466844 六、申請專利範圍 叙L 一種用於降低線驅動器(2)之功率消耗之配置’該驅 、器連接至輸送線(3)以輸送由數位信號處理器(丨)產生, ^連續符號(Sl,S2)並以循環字首(CP1,cp2)分隔之多音信 號’其特徵為其包含一可供制電壓供應(5)具有一輸出端 ^及一控制輸入端點,可控制電壓供應(5 )之輸出端點連 ,至線驅動器(2 )之電壓供應端點(6 ),以供應可控制之電 壓,及可控制電壓供應(5)之控制輸入端點連接至數位信 號處理器(1)之控制輸出端點,數位信號處理器在每一 循環字首(CP1,CP2)期間,可適於控制電壓供庳(5) 至線驅動器⑴之電壓,以響應次一發射之期峰 值。 2.如申請專利範圍第丨項之配置,其特徵為該可控制電 壓供應(5 )係經由一控制匯流排(4 )連接至數位作號處理写 、1 ) 0 3如申請專利範圍第1或2項之配置’其特徵為該可控 電壓供應含一開關(5 ),其適於供應不同電壓(sv丨s^2 _ . . S V η)至線驅動器(2 ). ’以響應次一發射之符號之不 峰至峰值。 ^ 4如申請專利範圍第1或2項之配置’其特徵為該可 電壓供應包含一由數位信號處理器(1)控制之Dc/Dc 制 BS 轉換O:\62\62298.PTD 第1〇頁
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9904642A SE517622C2 (sv) | 1999-12-17 | 1999-12-17 | Anordning för att minska en linjedrivares effektförlust |
Publications (1)
Publication Number | Publication Date |
---|---|
TW466844B true TW466844B (en) | 2001-12-01 |
Family
ID=20418180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW089100634A TW466844B (en) | 1999-12-17 | 2000-01-17 | An arrangement for reducing power dissipation in a line driver |
Country Status (12)
Country | Link |
---|---|
US (1) | US6407578B2 (zh) |
EP (1) | EP1243109B1 (zh) |
JP (1) | JP2003517772A (zh) |
KR (1) | KR100726210B1 (zh) |
CN (1) | CN1180588C (zh) |
AT (1) | ATE334541T1 (zh) |
AU (1) | AU1428301A (zh) |
DE (1) | DE60029632T2 (zh) |
HK (1) | HK1055038A1 (zh) |
SE (1) | SE517622C2 (zh) |
TW (1) | TW466844B (zh) |
WO (1) | WO2001045336A1 (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10135993A1 (de) * | 2001-07-24 | 2003-05-08 | Siemens Ag | Verfahren zur Reduzierung der Verlustleistung bei linearen Verstärkern und zugehörige Vorrichtung |
GB0219466D0 (en) * | 2002-08-21 | 2002-10-02 | Roke Manor Research | Multi-carrier power amplifier with switched PSU voltages |
EP1458115A1 (en) * | 2003-03-10 | 2004-09-15 | Alcatel | Attenuator for ADSL signals |
US7746921B1 (en) * | 2005-10-11 | 2010-06-29 | Thomas Robert Wik | Resonant digital data transmission |
CN101438523A (zh) * | 2006-06-23 | 2009-05-20 | 松下电器产业株式会社 | 无线发送装置、无线接收装置以及导频生成方法 |
US7863935B2 (en) * | 2008-02-21 | 2011-01-04 | Trendchip Technologies Corporation | Line driver architecture for 10/100/1000 BASE-T Ethernet |
EP2955890B1 (en) | 2009-04-07 | 2017-06-14 | Huawei Technologies Co., Ltd. | Improving power efficiency of a line driver |
US8446219B2 (en) * | 2009-06-17 | 2013-05-21 | Futurewei Technologies, Inc. | Class-G line driver control signal |
JP5984492B2 (ja) * | 2012-05-08 | 2016-09-06 | サンデンホールディングス株式会社 | 流体機械 |
JP2015161295A (ja) * | 2014-02-28 | 2015-09-07 | 株式会社富士通ゼネラル | ロータリ圧縮機 |
TWI705672B (zh) * | 2018-05-02 | 2020-09-21 | 大陸商貴州濎通芯物聯技術有限公司 | Ofdm線路驅動系統 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06334541A (ja) * | 1993-05-25 | 1994-12-02 | Sony Corp | 無線送信機 |
US5585744A (en) * | 1995-10-13 | 1996-12-17 | Cirrus Logic, Inc. | Circuits systems and methods for reducing power loss during transfer of data across a conductive line |
US5781617A (en) * | 1996-03-29 | 1998-07-14 | Netspeed, Inc. | Communication server apparatus using frequency multiplexing and method |
US6028486A (en) * | 1997-10-07 | 2000-02-22 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for reducing power dissipation in multi-carrier amplifiers |
US6163706A (en) * | 1997-11-18 | 2000-12-19 | Conexant Systems, Inc. | Apparatus for and method of improving efficiency of transceivers in radio products |
JP3541674B2 (ja) * | 1998-04-24 | 2004-07-14 | 日本ビクター株式会社 | マルチキャリア信号の生成方法及び送信装置 |
CA2279477A1 (en) * | 1999-07-30 | 2001-01-30 | Robert Bisson | Crest factor compensated driver |
-
1999
- 1999-12-17 SE SE9904642A patent/SE517622C2/sv not_active IP Right Cessation
-
2000
- 2000-01-17 TW TW089100634A patent/TW466844B/zh not_active IP Right Cessation
- 2000-11-10 CN CNB008172641A patent/CN1180588C/zh not_active Expired - Fee Related
- 2000-11-10 EP EP00976520A patent/EP1243109B1/en not_active Expired - Lifetime
- 2000-11-10 KR KR1020027007196A patent/KR100726210B1/ko not_active IP Right Cessation
- 2000-11-10 AT AT00976520T patent/ATE334541T1/de not_active IP Right Cessation
- 2000-11-10 WO PCT/SE2000/002201 patent/WO2001045336A1/en active IP Right Grant
- 2000-11-10 AU AU14283/01A patent/AU1428301A/en not_active Abandoned
- 2000-11-10 DE DE60029632T patent/DE60029632T2/de not_active Expired - Lifetime
- 2000-11-10 JP JP2001546104A patent/JP2003517772A/ja active Pending
- 2000-12-04 US US09/727,694 patent/US6407578B2/en not_active Expired - Lifetime
-
2003
- 2003-10-13 HK HK03107321A patent/HK1055038A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE60029632D1 (de) | 2006-09-07 |
WO2001045336A1 (en) | 2001-06-21 |
KR100726210B1 (ko) | 2007-06-11 |
EP1243109B1 (en) | 2006-07-26 |
HK1055038A1 (en) | 2003-12-19 |
CN1180588C (zh) | 2004-12-15 |
ATE334541T1 (de) | 2006-08-15 |
KR20020064922A (ko) | 2002-08-10 |
DE60029632T2 (de) | 2007-07-26 |
SE9904642D0 (sv) | 1999-12-17 |
CN1411648A (zh) | 2003-04-16 |
AU1428301A (en) | 2001-06-25 |
JP2003517772A (ja) | 2003-05-27 |
US6407578B2 (en) | 2002-06-18 |
SE517622C2 (sv) | 2002-06-25 |
SE9904642L (sv) | 2001-06-18 |
EP1243109A1 (en) | 2002-09-25 |
US20010004387A1 (en) | 2001-06-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW466844B (en) | An arrangement for reducing power dissipation in a line driver | |
TW531994B (en) | OFDM communications methods and apparatus | |
US6845082B2 (en) | Peak to average power ratio reduction in communication systems | |
US7403569B2 (en) | Efficient low-power mode for multicarrier communications | |
US4462105A (en) | Transceiver unit for a telecommunication system | |
JP2010514233A (ja) | 通信システムにおけるピーク対平均電力比低減のための方法 | |
EP1197028B1 (en) | Integrated modem and line-isolation circuitry and associated method | |
DE50012569D1 (de) | Bussystem | |
US6826225B1 (en) | Integrated modem and line-isolation circuitry with selective raw data or modem data communication and associated method | |
US6735246B1 (en) | Integrated modem and line-isolation circuitry with data flow control and associated method | |
CN100483889C (zh) | 多频配电方法和装置 | |
KR960013266B1 (ko) | 모뎀 접속 가능한 데이타통신장치 및 방법 | |
KR970068175A (ko) | 오프셋 조정회로를 가지는 디지털/아날로그 변환 출력회로 | |
JPH11312978A (ja) | データ変換装置 | |
KR0152344B1 (ko) | 펄스폭변조신호 발생회로 | |
JPH0750949B2 (ja) | ト−ン信号送出制御方式 | |
JPH0543557Y2 (zh) | ||
CN110445732A (zh) | Ofdm线路驱动系统 | |
JPH11220542A (ja) | 通信用半導体集積回路 | |
JP2003152550A (ja) | 半導体集積回路 | |
JPH11220539A (ja) | 通信用半導体集積回路 | |
JPH01316059A (ja) | 電源給電方式 | |
JP2000134270A (ja) | 電話機用半導体集積回路 | |
ATE333188T1 (de) | Schaltungsanordnung zum bilden des abschlusses einer analogen teilnehmerleitung | |
JPH11225349A (ja) | 加入者接続装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent | ||
MM4A | Annulment or lapse of patent due to non-payment of fees |