IT1259012B - Metodo e circuiti per la riduzione della potenza di picco del segnale filtrato trasmesso in un collegamento di tipo numerico - Google Patents
Metodo e circuiti per la riduzione della potenza di picco del segnale filtrato trasmesso in un collegamento di tipo numericoInfo
- Publication number
- IT1259012B IT1259012B ITMI921819A ITMI921819A IT1259012B IT 1259012 B IT1259012 B IT 1259012B IT MI921819 A ITMI921819 A IT MI921819A IT MI921819 A ITMI921819 A IT MI921819A IT 1259012 B IT1259012 B IT 1259012B
- Authority
- IT
- Italy
- Prior art keywords
- reducing
- peak power
- filtered signal
- type connection
- circuits
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Dc Digital Transmission (AREA)
Abstract
La presente invenzione riguarda un metodo per la riduzione della potenza di picco del segnale all'uscita del filtro di trasmissione di un collegamento di tipo numerico, ad esempio a microonde.Il trovato si caratterizza per l'utilizzo di una codifica in trasmissione e una decodifica in ricezione, finalizzate alla riduzione, della potenza di picco del segnale filtrato.In una forma di realizzazione -peraltro non limitativa- il codificatore ed il decodificatore possono essere realizzati mediante semplici mappe inseribili nella parte di banda base del sistema.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI921819A IT1259012B (it) | 1992-07-27 | 1992-07-27 | Metodo e circuiti per la riduzione della potenza di picco del segnale filtrato trasmesso in un collegamento di tipo numerico |
NO932469A NO305269B1 (no) | 1992-07-27 | 1993-07-07 | FremgangsmÕte for Õ sende og motta numeriske signaler |
EP93111722A EP0584534B1 (en) | 1992-07-27 | 1993-07-22 | Method and apparatus for reducing the peak power of data sequences |
DE69326298T DE69326298T2 (de) | 1992-07-27 | 1993-07-22 | Verfahren und Einrichtung zur Verminderung der Spitzenleistung von Datenfolgen |
US08/097,675 US5493587A (en) | 1992-07-27 | 1993-07-27 | Method and circuits for reducing the peak power of the filtered signal transmitted in a digital link |
JP5185308A JPH06164664A (ja) | 1992-07-27 | 1993-07-27 | デジタルリンク中の送信されフィルタされた信号のピ−ク電力を減少する方法および回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI921819A IT1259012B (it) | 1992-07-27 | 1992-07-27 | Metodo e circuiti per la riduzione della potenza di picco del segnale filtrato trasmesso in un collegamento di tipo numerico |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI921819A0 ITMI921819A0 (it) | 1992-07-27 |
ITMI921819A1 ITMI921819A1 (it) | 1994-01-27 |
IT1259012B true IT1259012B (it) | 1996-03-11 |
Family
ID=11363749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI921819A IT1259012B (it) | 1992-07-27 | 1992-07-27 | Metodo e circuiti per la riduzione della potenza di picco del segnale filtrato trasmesso in un collegamento di tipo numerico |
Country Status (6)
Country | Link |
---|---|
US (1) | US5493587A (it) |
EP (1) | EP0584534B1 (it) |
JP (1) | JPH06164664A (it) |
DE (1) | DE69326298T2 (it) |
IT (1) | IT1259012B (it) |
NO (1) | NO305269B1 (it) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1526446A3 (en) * | 1991-07-08 | 2007-04-04 | Seiko Epson Corporation | Extensible RISC microprocessor architecture |
IT1273695B (it) * | 1994-07-28 | 1997-07-09 | Alcatel Italia | Metodo e circuiti per la trasmissione e la ricezione di segnali numerici nel quale si riduce la potenza di picco del segnale filtrato trasmesso compatibili con tecniche di codifica note |
US5793797A (en) * | 1995-05-09 | 1998-08-11 | Unisys Corporation | Data transmisson system with a low peak-to-average power ratio based on distorting small amplitude signals |
US5621762A (en) * | 1995-06-12 | 1997-04-15 | Motorola, Inc. | Radio with peak power and bandwidth efficient modulation |
WO1997020399A1 (en) * | 1995-11-29 | 1997-06-05 | Philips Electronics N.V. | Transmission system for a non linear transmission medium |
US5894498A (en) * | 1997-02-26 | 1999-04-13 | Motorola, Inc. | Method and apparatus for analyzing a composite carrier signal |
DE19808993C2 (de) * | 1998-03-03 | 2003-12-18 | Fraunhofer Ges Forschung | Verfahren zur Spitzenwertreduktion bei Einträger-modulierten oder Mehrträger-modulierten, digitalen Sendesignalen |
US6163570A (en) | 1998-05-11 | 2000-12-19 | Conexant Systems, Inc. | Methods and apparatus for verifying transmit power levels in a signal point limited transmission system |
US6452978B1 (en) * | 1999-02-11 | 2002-09-17 | Tioga Technologies Inc. | Combined shaping and peak-to-average reduction for single carrier modulation systems |
US6961369B1 (en) | 1999-11-09 | 2005-11-01 | Aware, Inc. | System and method for scrambling the phase of the carriers in a multicarrier communications system |
AU1596401A (en) * | 1999-11-09 | 2001-06-06 | Aware, Inc. | A system and method for scrambling the phase of the carriers in a multicarrier communications system |
IT1317976B1 (it) * | 2000-06-16 | 2003-07-21 | Siemens Inf & Comm Networks | Metodo e sistema di trasmissione e ricezione alle microonde di segnaliad ampia dinamica di livello nell'inviluppo di modulazione |
WO2001099279A1 (en) * | 2000-06-20 | 2001-12-27 | Prescient Networks Pty Ltd | Signal peak reduction circuit for non-constant envelope modulation signals |
AUPQ820000A0 (en) * | 2000-06-20 | 2000-07-13 | Berangi, R. | Peak power reduction schemes for multi-code cdma and critically sampled complex gaussian signals |
US7170952B2 (en) | 2001-07-02 | 2007-01-30 | Powerwave Technologies, Inc. | System and method for post filtering peak power reduction in communications systems |
US7095798B2 (en) | 2001-08-02 | 2006-08-22 | Powerwave Technologies, Inc. | System and method for post filtering peak power reduction in multi-carrier communications systems |
US7054385B2 (en) * | 2001-10-22 | 2006-05-30 | Tropian, Inc. | Reduction of average-to-minimum power ratio in communications signals |
US20070211829A1 (en) * | 2001-10-22 | 2007-09-13 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for pulse optimization for non-linear filtering |
US8331490B2 (en) | 2001-10-22 | 2012-12-11 | Panasonic Corporation | Methods and apparatus for conditioning communications signals based on detection of high-frequency events in polar domain |
FR2836513B1 (fr) * | 2002-02-25 | 2005-12-02 | Renault Vehicules Ind | Ligne d'echappement et vehicule a moteur ainsi equipe |
US6892057B2 (en) | 2002-08-08 | 2005-05-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for reducing dynamic range of a power amplifier |
US7848446B2 (en) * | 2006-09-27 | 2010-12-07 | Telefonaktiebolaget L M Ericsson (Publ) | Reduction of peak-to-average-power ratio in a telecommunications system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4959842A (en) * | 1988-04-13 | 1990-09-25 | Codex Corporation | Signal constellations |
AU630417B2 (en) * | 1989-02-16 | 1992-10-29 | Codex Corporation | Trellis shaping for modulation systems |
US5159610A (en) * | 1989-05-12 | 1992-10-27 | Codex Corporation | Trellis precoding for modulation systems |
US5095497A (en) * | 1989-10-02 | 1992-03-10 | At & T Bell Laboratories | Technique for achieving the full coding gain of encoded digital signals |
DK0577672T3 (da) * | 1991-03-28 | 1999-04-26 | British Telecomm | TCM skema med fraktions bit-hastigheder, rammesignaler og konstellationsformning |
-
1992
- 1992-07-27 IT ITMI921819A patent/IT1259012B/it active IP Right Grant
-
1993
- 1993-07-07 NO NO932469A patent/NO305269B1/no not_active IP Right Cessation
- 1993-07-22 DE DE69326298T patent/DE69326298T2/de not_active Expired - Fee Related
- 1993-07-22 EP EP93111722A patent/EP0584534B1/en not_active Expired - Lifetime
- 1993-07-27 US US08/097,675 patent/US5493587A/en not_active Expired - Fee Related
- 1993-07-27 JP JP5185308A patent/JPH06164664A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
NO932469L (no) | 1994-01-28 |
NO305269B1 (no) | 1999-04-26 |
DE69326298T2 (de) | 2000-03-23 |
US5493587A (en) | 1996-02-20 |
ITMI921819A1 (it) | 1994-01-27 |
DE69326298D1 (de) | 1999-10-14 |
JPH06164664A (ja) | 1994-06-10 |
ITMI921819A0 (it) | 1992-07-27 |
EP0584534A1 (en) | 1994-03-02 |
EP0584534B1 (en) | 1999-09-08 |
NO932469D0 (no) | 1993-07-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950629 |