SE0102923L - Effektivt utförande av en stor FFT - Google Patents
Effektivt utförande av en stor FFTInfo
- Publication number
- SE0102923L SE0102923L SE0102923A SE0102923A SE0102923L SE 0102923 L SE0102923 L SE 0102923L SE 0102923 A SE0102923 A SE 0102923A SE 0102923 A SE0102923 A SE 0102923A SE 0102923 L SE0102923 L SE 0102923L
- Authority
- SE
- Sweden
- Prior art keywords
- fft
- communication network
- function
- effective execution
- large fft
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
- H03H17/0264—Filter sets with mutual related characteristics
- H03H17/0266—Filter banks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
- G06F17/141—Discrete Fourier transforms
- G06F17/142—Fast Fourier transforms, e.g. using a Cooley-Tukey type algorithm
-
- 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
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
- H04L27/263—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators modification of IFFT/IDFT modulator for performance improvement
-
- 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
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2637—Modulators with direct modulation of individual subcarriers
-
- 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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
- H04L27/2651—Modification of fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators for performance improvement
-
- 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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/2653—Demodulators with direct demodulation of individual subcarriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Discrete Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Software Systems (AREA)
- Databases & Information Systems (AREA)
- General Engineering & Computer Science (AREA)
- Algebra (AREA)
- Computer Hardware Design (AREA)
- Mobile Radio Communication Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0021708A GB2366494A (en) | 2000-09-05 | 2000-09-05 | Dividing bandwidth into sub-bands prior to implementing an FFT in a high data rate communications network |
Publications (2)
Publication Number | Publication Date |
---|---|
SE0102923D0 SE0102923D0 (sv) | 2001-09-04 |
SE0102923L true SE0102923L (sv) | 2002-03-06 |
Family
ID=9898822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0102923A SE0102923L (sv) | 2000-09-05 | 2001-09-04 | Effektivt utförande av en stor FFT |
Country Status (6)
Country | Link |
---|---|
US (1) | US7280469B2 (sv) |
CN (1) | CN1220358C (sv) |
DE (1) | DE10143007A1 (sv) |
FR (1) | FR2813725A1 (sv) |
GB (1) | GB2366494A (sv) |
SE (1) | SE0102923L (sv) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7706689B2 (en) | 2004-06-14 | 2010-04-27 | Aurora Networks, Inc. | Forward baseband digitalization |
US7668266B2 (en) * | 2005-03-18 | 2010-02-23 | Georgia Tech Research Corporation | Crest factor reduction in OFDM using blind selected pilot tone modulation |
CN100433621C (zh) * | 2005-05-17 | 2008-11-12 | 华为技术有限公司 | 提高dsl用户板带宽的方法及采用该方法的dsl用户板 |
US8117250B2 (en) * | 2005-12-29 | 2012-02-14 | Triductor Technology (Suzhou) Inc. | VDSL2 transmitter/receiver architecture |
JP5089900B2 (ja) * | 2006-03-24 | 2012-12-05 | 富士通株式会社 | 無線端末装置、無線基地局の制御方法、無線端末装置の制御方法 |
US8023574B2 (en) * | 2006-05-05 | 2011-09-20 | Intel Corporation | Method and apparatus to support scalability in a multicarrier network |
KR100854064B1 (ko) * | 2006-12-05 | 2008-08-25 | 한국전자통신연구원 | 직교 주파수 분할 다중화 시스템에서 papr감소를 위한송신장치 및 방법 |
US9705477B2 (en) * | 2008-04-30 | 2017-07-11 | Innovation Digital, LLC | Compensator for removing nonlinear distortion |
US9226304B2 (en) | 2014-03-10 | 2015-12-29 | Origin Wireless, Inc. | Time-reversal wireless paradigm for internet of things |
US8204527B2 (en) * | 2008-10-01 | 2012-06-19 | Broadcom Corporation | Subscriber station transceiver allocation of groups of subcarriers between a plurality of transceiver antennas |
US10122409B2 (en) * | 2012-12-03 | 2018-11-06 | University Of Maryland At College Park | Systems and methods for time-reversal division multiple access wireless broadband communications |
CN104050147B (zh) * | 2013-03-13 | 2017-04-05 | 刘湘辉 | 将时域信号转换成频域信号的方法与系统 |
EP3358798A1 (en) * | 2017-02-06 | 2018-08-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Receiver, transmitter, communication system for subband communication and methods for subband communication |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE217953T1 (de) | 1984-07-20 | 1987-09-03 | Yokogawa Medical Systems, Ltd., Tachikawa, Tokio/Tokyo | Analysevorrichtung fuer dopplersignal. |
DE69327837T2 (de) * | 1992-12-01 | 2000-10-12 | Koninkl Philips Electronics Nv | Teilband-Diversityübertragungssystem |
CA2122652C (en) | 1994-05-02 | 2001-02-20 | Mohammad Reza Soleymani | Half-band filter for a cellular group demultiplexer |
GB9414664D0 (en) * | 1994-07-20 | 1994-09-07 | British Aerospace | Digital signal processing apparatus |
CA2184541A1 (en) * | 1996-08-30 | 1998-03-01 | Tet Hin Yeap | Method and apparatus for wavelet modulation of signals for transmission and/or storage |
GB2317537B (en) * | 1996-09-19 | 2000-05-17 | Matra Marconi Space | Digital signal processing apparatus for frequency demultiplexing or multiplexing |
JP3848421B2 (ja) * | 1997-01-31 | 2006-11-22 | 秀男 村上 | 離散時間信号に対する多重化装置および多重化システムと、離散時間信号に対する多重化方法 |
US5867479A (en) * | 1997-06-27 | 1999-02-02 | Lockheed Martin Corporation | Digital multi-channel demultiplexer/multiplex (MCD/M architecture) |
US6442195B1 (en) * | 1997-06-30 | 2002-08-27 | Integrated Telecom Express, Inc. | Multiple low speed sigma-delta analog front ends for full implementation of high-speed data link protocol |
KR100322476B1 (ko) * | 1999-12-14 | 2002-02-07 | 오길록 | 디엠티-씨엠에프비 2단계로 구성된 다중-톤 변복조 시스템 |
US6473467B1 (en) * | 2000-03-22 | 2002-10-29 | Qualcomm Incorporated | Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system |
-
2000
- 2000-09-05 GB GB0021708A patent/GB2366494A/en not_active Withdrawn
-
2001
- 2001-08-31 US US09/942,628 patent/US7280469B2/en not_active Expired - Fee Related
- 2001-09-03 DE DE10143007A patent/DE10143007A1/de not_active Withdrawn
- 2001-09-04 SE SE0102923A patent/SE0102923L/sv not_active Application Discontinuation
- 2001-09-04 CN CNB011310359A patent/CN1220358C/zh not_active Expired - Fee Related
- 2001-09-05 FR FR0111465A patent/FR2813725A1/fr active Pending
Also Published As
Publication number | Publication date |
---|---|
GB0021708D0 (en) | 2000-10-18 |
FR2813725A1 (fr) | 2002-03-08 |
US20020031083A1 (en) | 2002-03-14 |
DE10143007A1 (de) | 2002-04-11 |
CN1220358C (zh) | 2005-09-21 |
GB2366494A (en) | 2002-03-06 |
US7280469B2 (en) | 2007-10-09 |
SE0102923D0 (sv) | 2001-09-04 |
CN1356814A (zh) | 2002-07-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |