IT1318964B1 - Metodo per ridurre il rapporto tra potenza di picco e potenza media diun segnale multiportante generato da traformata di fourier in sistemi - Google Patents
Metodo per ridurre il rapporto tra potenza di picco e potenza media diun segnale multiportante generato da traformata di fourier in sistemiInfo
- Publication number
- IT1318964B1 IT1318964B1 IT2000MI002143A ITMI20002143A IT1318964B1 IT 1318964 B1 IT1318964 B1 IT 1318964B1 IT 2000MI002143 A IT2000MI002143 A IT 2000MI002143A IT MI20002143 A ITMI20002143 A IT MI20002143A IT 1318964 B1 IT1318964 B1 IT 1318964B1
- Authority
- IT
- Italy
- Prior art keywords
- multiportant
- relationship
- systems
- reduce
- signal generated
- 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
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
- H04L27/2623—Reduction thereof by clipping
- H04L27/2624—Reduction thereof by clipping by soft clipping
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2000MI002143A IT1318964B1 (it) | 2000-10-04 | 2000-10-04 | Metodo per ridurre il rapporto tra potenza di picco e potenza media diun segnale multiportante generato da traformata di fourier in sistemi |
EP01402407A EP1195962A3 (en) | 2000-10-04 | 2001-09-19 | Method for reducing the peak-to-average power ratio of a multicarrier signal |
US09/962,145 US7545869B2 (en) | 2000-10-04 | 2001-09-26 | Method of reducing the peak-to-average power ratio of a fourier transform-generated multi-carrier signal in transmission systems |
NO20014801A NO20014801L (no) | 2000-10-04 | 2001-10-03 | Fremgangsmåte for reduksjon av topp/middel-effektforholdet for et Fourier-transformasjonsgenerert multib¶rebölgesignal ioverföringssystemer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2000MI002143A IT1318964B1 (it) | 2000-10-04 | 2000-10-04 | Metodo per ridurre il rapporto tra potenza di picco e potenza media diun segnale multiportante generato da traformata di fourier in sistemi |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI20002143A0 ITMI20002143A0 (it) | 2000-10-04 |
ITMI20002143A1 ITMI20002143A1 (it) | 2002-04-04 |
IT1318964B1 true IT1318964B1 (it) | 2003-09-19 |
Family
ID=11445903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2000MI002143A IT1318964B1 (it) | 2000-10-04 | 2000-10-04 | Metodo per ridurre il rapporto tra potenza di picco e potenza media diun segnale multiportante generato da traformata di fourier in sistemi |
Country Status (4)
Country | Link |
---|---|
US (1) | US7545869B2 (it) |
EP (1) | EP1195962A3 (it) |
IT (1) | IT1318964B1 (it) |
NO (1) | NO20014801L (it) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7418043B2 (en) * | 2000-07-19 | 2008-08-26 | Lot 41 Acquisition Foundation, Llc | Software adaptable high performance multicarrier transmission protocol |
US8670390B2 (en) | 2000-11-22 | 2014-03-11 | Genghiscomm Holdings, LLC | Cooperative beam-forming in wireless networks |
GB2372917A (en) | 2001-03-02 | 2002-09-04 | Mitel Corp | Discrete multi-tone peak reduction |
US7127005B2 (en) | 2001-03-23 | 2006-10-24 | James Stuart Wight | Computational circuits and methods for processing modulated signals having non-constant envelopes |
US20020159532A1 (en) * | 2001-03-23 | 2002-10-31 | Icefyre Semiconductor Corporation | Computational circuits and methods for signal deconstruction/reconstruction in wireless transceivers |
US9819449B2 (en) | 2002-05-14 | 2017-11-14 | Genghiscomm Holdings, LLC | Cooperative subspace demultiplexing in content delivery networks |
US10931338B2 (en) | 2001-04-26 | 2021-02-23 | Genghiscomm Holdings, LLC | Coordinated multipoint systems |
US10355720B2 (en) | 2001-04-26 | 2019-07-16 | Genghiscomm Holdings, LLC | Distributed software-defined radio |
US10142082B1 (en) | 2002-05-14 | 2018-11-27 | Genghiscomm Holdings, LLC | Pre-coding in OFDM |
US10200227B2 (en) | 2002-05-14 | 2019-02-05 | Genghiscomm Holdings, LLC | Pre-coding in multi-user MIMO |
US10644916B1 (en) | 2002-05-14 | 2020-05-05 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
US9628231B2 (en) | 2002-05-14 | 2017-04-18 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
JP3796204B2 (ja) | 2002-07-31 | 2006-07-12 | 松下電器産業株式会社 | マルチキャリア送信信号のピーク抑圧方法およびピーク抑圧機能をもつマルチキャリア送信信号生成回路 |
US6925128B2 (en) * | 2002-10-31 | 2005-08-02 | Motorola, Inc. | Method and apparatus for reducing a peak-to-average power ratio in an orthogonal frequency division multiplex signal |
KR100605826B1 (ko) * | 2002-11-18 | 2006-07-31 | 삼성전자주식회사 | 높은 첨두전력대 평균전력비를 가지는 전력증폭기의 효율개선 장치 및 방법 |
US7652981B2 (en) | 2002-12-02 | 2010-01-26 | Ntt Docomo, Inc. | Orthogonal frequency multi-carrier transmission device and transmission method |
DE60312811T2 (de) * | 2003-03-11 | 2007-08-16 | Alcatel Lucent | Verfahren und Vorrichtung zur Verringerung des Verhältnisses von Spitzen- zu Durchschnittsleistung |
GB2401516A (en) * | 2003-04-17 | 2004-11-10 | Univ Southampton | Peak-to-average power ratio reduction by subtracting shaped pulses from a baseband signal |
US7580476B2 (en) * | 2003-06-26 | 2009-08-25 | Northrop Grumman Corporation | Communication system and method for improving efficiency and linearity |
US11431386B1 (en) | 2004-08-02 | 2022-08-30 | Genghiscomm Holdings, LLC | Transmit pre-coding |
US11552737B1 (en) | 2004-08-02 | 2023-01-10 | Genghiscomm Holdings, LLC | Cooperative MIMO |
US11184037B1 (en) | 2004-08-02 | 2021-11-23 | Genghiscomm Holdings, LLC | Demodulating and decoding carrier interferometry signals |
US20070206703A1 (en) * | 2005-11-21 | 2007-09-06 | Corredoura Paul L | System and method for reducing dynamic range of modulated signals without increasing out-of-band power |
US7742535B2 (en) * | 2005-12-21 | 2010-06-22 | Powerwave Technologies, Inc. | Crest factor reduction system and method for OFDM transmission systems using selective sub-carrier degradation |
JP4750592B2 (ja) * | 2006-03-17 | 2011-08-17 | 富士通株式会社 | ピーク抑圧方法、ピーク抑圧装置、無線送信装置 |
US7995975B2 (en) | 2006-12-21 | 2011-08-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for signal peak-to-average ratio reduction |
US8363749B2 (en) * | 2008-05-05 | 2013-01-29 | Industrial Technology Research Institute | Peak to average power ratio reduction |
US8275067B2 (en) * | 2008-06-13 | 2012-09-25 | Ikanos Communications, Inc. | Adaptive turbo peak mitigation for peak-to-average ratio (PAR) reduction using reserved tones |
US8213536B2 (en) * | 2008-06-13 | 2012-07-03 | Ikanos Communications, Inc. | Low complexity systems and methods for peak-to-average ratio (PAR) reduction using reserved tones |
US8885736B2 (en) * | 2008-06-13 | 2014-11-11 | Ikanos Communications, Inc. | Systems and methods for positioning and messaging of reserved tones for peak-to-average ratio (PAR) reduction in DSL systems |
US10637705B1 (en) | 2017-05-25 | 2020-04-28 | Genghiscomm Holdings, LLC | Peak-to-average-power reduction for OFDM multiple access |
US10243773B1 (en) | 2017-06-30 | 2019-03-26 | Genghiscomm Holdings, LLC | Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM |
US11917604B2 (en) | 2019-01-25 | 2024-02-27 | Tybalt, Llc | Orthogonal multiple access and non-orthogonal multiple access |
US11343823B2 (en) | 2020-08-16 | 2022-05-24 | Tybalt, Llc | Orthogonal multiple access and non-orthogonal multiple access |
WO2020154550A1 (en) | 2019-01-25 | 2020-07-30 | Genghiscomm Holdings, LLC | Orthogonal multiple access and non-orthogonal multiple access |
WO2020242898A1 (en) | 2019-05-26 | 2020-12-03 | Genghiscomm Holdings, LLC | Non-orthogonal multiple access |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5835536A (en) * | 1995-02-02 | 1998-11-10 | Motorola, Inc. | Method and apparatus for reducing peak-to-average requirements in multi-tone communication circuits |
JP3900670B2 (ja) * | 1998-04-17 | 2007-04-04 | ソニー株式会社 | 通信装置 |
US6512797B1 (en) * | 1998-04-20 | 2003-01-28 | The Board Of Trustees Of The Leland Stanford Junior University | Peak to average power ratio reduction |
US6757299B1 (en) * | 1998-09-24 | 2004-06-29 | Silicon Automation Systems Limited | Peak power to average power ratio reduction in multicarrier communication systems using error-correcting code |
US6674810B1 (en) * | 1999-05-27 | 2004-01-06 | 3Com Corporation | Method and apparatus for reducing peak-to-average power ratio in a discrete multi-tone signal |
CA2291493A1 (en) * | 1999-12-03 | 2001-06-03 | Catena Technologies Canada, Inc. | Peak to average power ratio reduction in communication systems |
-
2000
- 2000-10-04 IT IT2000MI002143A patent/IT1318964B1/it active
-
2001
- 2001-09-19 EP EP01402407A patent/EP1195962A3/en not_active Withdrawn
- 2001-09-26 US US09/962,145 patent/US7545869B2/en not_active Expired - Fee Related
- 2001-10-03 NO NO20014801A patent/NO20014801L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
US20020061068A1 (en) | 2002-05-23 |
EP1195962A3 (en) | 2005-06-15 |
EP1195962A2 (en) | 2002-04-10 |
US7545869B2 (en) | 2009-06-09 |
ITMI20002143A1 (it) | 2002-04-04 |
NO20014801L (no) | 2002-04-05 |
NO20014801D0 (no) | 2001-10-03 |
ITMI20002143A0 (it) | 2000-10-04 |
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