USRE45293E1 - Transmission system for OFDM-signals with optimized synchronization - Google Patents
Transmission system for OFDM-signals with optimized synchronization Download PDFInfo
- Publication number
- USRE45293E1 USRE45293E1 US13/653,174 US201213653174A USRE45293E US RE45293 E1 USRE45293 E1 US RE45293E1 US 201213653174 A US201213653174 A US 201213653174A US RE45293 E USRE45293 E US RE45293E
- Authority
- US
- United States
- Prior art keywords
- signals
- ofdm
- subcarriers
- receiving
- modulated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26132—Structure of the reference signals using repetition
-
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
- H04L27/2663—Coarse synchronisation, e.g. by correlation
-
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2669—Details of algorithms characterised by the domain of operation
- H04L27/2671—Time domain
-
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2675—Pilot or known symbols
-
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2676—Blind, i.e. without using known symbols
- H04L27/2678—Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix
Abstract
Description
which means y(m)=x(m)+x(m−1)+. . . +x(m−L2) if the input signal of the MAV means 40 is defined as x(m) and its output signal is defined as y(m).
Claims (21)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/653,174 USRE45293E1 (en) | 1997-09-04 | 2012-10-16 | Transmission system for OFDM-signals with optimized synchronization |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97115345 | 1997-09-04 | ||
EM09711530000 | 1997-09-04 | ||
US09/146,734 US6731594B1 (en) | 1997-09-04 | 1998-09-03 | Transmission system for OFDM-signals with optimized synchronisation |
US11/416,477 USRE43305E1 (en) | 1997-09-04 | 2006-05-03 | Transmission system for OFDM-signals with optimized synchronization |
US12/621,543 USRE43829E1 (en) | 1997-09-04 | 2009-11-19 | Transmission system for OFDM-signals with optimized synchronization |
US13/653,174 USRE45293E1 (en) | 1997-09-04 | 2012-10-16 | Transmission system for OFDM-signals with optimized synchronization |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/146,734 Reissue US6731594B1 (en) | 1997-09-04 | 1998-09-03 | Transmission system for OFDM-signals with optimized synchronisation |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE45293E1 true USRE45293E1 (en) | 2014-12-16 |
Family
ID=45922246
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/621,543 Expired - Lifetime USRE43829E1 (en) | 1997-09-04 | 2009-11-19 | Transmission system for OFDM-signals with optimized synchronization |
US12/621,544 Expired - Lifetime USRE43703E1 (en) | 1997-09-04 | 2009-11-19 | Transmission system for OFDM-signals with optimized synchronization |
US13/653,174 Expired - Lifetime USRE45293E1 (en) | 1997-09-04 | 2012-10-16 | Transmission system for OFDM-signals with optimized synchronization |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/621,543 Expired - Lifetime USRE43829E1 (en) | 1997-09-04 | 2009-11-19 | Transmission system for OFDM-signals with optimized synchronization |
US12/621,544 Expired - Lifetime USRE43703E1 (en) | 1997-09-04 | 2009-11-19 | Transmission system for OFDM-signals with optimized synchronization |
Country Status (1)
Country | Link |
---|---|
US (3) | USRE43829E1 (en) |
Citations (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0613267A2 (en) | 1993-02-08 | 1994-08-31 | Koninklijke Philips Electronics N.V. | OFDM system with cross-talk reduction |
EP0653859A1 (en) | 1993-11-11 | 1995-05-17 | Gpt Limited | Discrete multiple tone transmission on high-speed digital subscriber lines |
US5506836A (en) * | 1993-07-28 | 1996-04-09 | Sony Corporation | Orthogonal frequency division multiplex demodulation |
US5521943A (en) * | 1992-09-21 | 1996-05-28 | Rohde & Schwarz Gmbh & Co. K.G. | COFDM combined encoder modulation for digital broadcasting sound and video with PSK, PSK/AM, and QAM techniques |
EP0730357A2 (en) | 1995-03-01 | 1996-09-04 | Telia Ab | Frequency and frame synchronisation for OFDM |
EP0730757A1 (en) | 1993-01-20 | 1996-09-11 | HOPMEYER, Stanley | Underwater camera housing for still- and motion-picture cameras |
US5559833A (en) | 1993-01-20 | 1996-09-24 | U.S. Philips Corporation | Transmission system comprising timing recovery |
DE19520353A1 (en) | 1995-06-07 | 1996-12-12 | Thomson Brandt Gmbh | Method and circuit arrangement for improving the reception behavior when transmitting digital signals |
US5610908A (en) | 1992-09-07 | 1997-03-11 | British Broadcasting Corporation | Digital signal transmission system using frequency division multiplex |
US5631610A (en) * | 1996-01-25 | 1997-05-20 | Aware, Inc. | Single side-band modulation system for use in digitally implemented multicarrier transmission systems |
US5646935A (en) * | 1994-03-15 | 1997-07-08 | Kabushiki Kaisha Toshiba | Hierarchical quadrature frequency multiplex signal format and apparatus for transmission and reception thereof |
US5675572A (en) * | 1993-07-28 | 1997-10-07 | Sony Corporation | Orthogonal frequency division multiplex modulation apparatus and orthogonal frequency division multiplex demodulation apparatus |
US5694389A (en) * | 1995-02-24 | 1997-12-02 | Kabushiki Kaisha Toshiba | OFDM transmission/reception system and transmitting/receiving apparatus |
US5732113A (en) | 1996-06-20 | 1998-03-24 | Stanford University | Timing and frequency synchronization of OFDM signals |
US5732068A (en) | 1994-05-09 | 1998-03-24 | Victor Company Of Japan, Ltd. | Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing |
US5787123A (en) * | 1995-10-30 | 1998-07-28 | Sony Corporation | Receiver for orthogonal frequency division multiplexed signals |
US5841813A (en) * | 1996-09-04 | 1998-11-24 | Lucent Technologies Inc. | Digital communications system using complementary codes and amplitude modulation |
US5867478A (en) * | 1997-06-20 | 1999-02-02 | Motorola, Inc. | Synchronous coherent orthogonal frequency division multiplexing system, method, software and device |
US5903546A (en) | 1994-08-31 | 1999-05-11 | Sony Corporation | Means and method of improving multiplexed transmission and reception by coding and modulating divided digital signals |
US5946292A (en) * | 1996-08-06 | 1999-08-31 | Mitsubishi Denki Kabushiki Kaisha | Method and digital receiver for receiving orthogonal frequency-division multiplexed signals |
US5949796A (en) | 1996-06-19 | 1999-09-07 | Kumar; Derek D. | In-band on-channel digital broadcasting method and system |
US5953311A (en) * | 1997-02-18 | 1999-09-14 | Discovision Associates | Timing synchronization in a receiver employing orthogonal frequency division multiplexing |
US5966401A (en) * | 1995-12-27 | 1999-10-12 | Kumar; Derek D. | RF simplex spread spectrum receiver and method with symbol deinterleaving prior to bit estimating |
US6009073A (en) | 1995-09-25 | 1999-12-28 | Victor Company Of Japan, Ltd. | Method for transmitting an orthogonal frequency division multiplex signal, apparatus for transmitting the signal and apparatus for receiving the signal |
US6038450A (en) * | 1997-09-12 | 2000-03-14 | Lucent Technologies, Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
US6125150A (en) * | 1995-10-30 | 2000-09-26 | The Board Of Trustees Of The Leland Stanford, Junior University | Transmission system using code designed for transmission with periodic interleaving |
US6173016B1 (en) * | 1996-08-23 | 2001-01-09 | Sony Corporation | Transmission method, transmission apparatus and reception method and reception apparatus |
US6175551B1 (en) * | 1997-07-31 | 2001-01-16 | Lucent Technologies, Inc. | Transmission system and method employing peak cancellation to reduce the peak-to-average power ratio |
US6252909B1 (en) * | 1992-09-21 | 2001-06-26 | Aware, Inc. | Multi-carrier transmission system utilizing channels of different bandwidth |
US6738443B1 (en) | 1999-06-16 | 2004-05-18 | Sony International (Europe) Gmbh | Optimized synchronization preamble structure |
US7145955B1 (en) | 1999-04-23 | 2006-12-05 | Sony Deutschland Gmbh | Optimized synchronization preamble structure |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3485117B2 (en) * | 1993-09-10 | 2004-01-13 | ドイチェ トムソン−ブラント ゲーエムベーハー | Transmission method of OFDM reference signal |
DE69711957T2 (en) * | 1996-02-02 | 2002-09-19 | Thomson Brandt Gmbh | Method and device for receiving multicarrier signals |
US5914933A (en) * | 1996-03-08 | 1999-06-22 | Lucent Technologies Inc. | Clustered OFDM communication system |
JP3556047B2 (en) * | 1996-05-22 | 2004-08-18 | 三菱電機株式会社 | Digital broadcast receiver |
FI102231B (en) * | 1996-09-16 | 1998-10-30 | Nokia Technology Gmbh | Method for adjusting symbol synchronization and sampling rate in a device receiving OFDM modulated transmissions and a device implementing the method |
-
2009
- 2009-11-19 US US12/621,543 patent/USRE43829E1/en not_active Expired - Lifetime
- 2009-11-19 US US12/621,544 patent/USRE43703E1/en not_active Expired - Lifetime
-
2012
- 2012-10-16 US US13/653,174 patent/USRE45293E1/en not_active Expired - Lifetime
Patent Citations (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5610908A (en) | 1992-09-07 | 1997-03-11 | British Broadcasting Corporation | Digital signal transmission system using frequency division multiplex |
US5521943A (en) * | 1992-09-21 | 1996-05-28 | Rohde & Schwarz Gmbh & Co. K.G. | COFDM combined encoder modulation for digital broadcasting sound and video with PSK, PSK/AM, and QAM techniques |
US6252909B1 (en) * | 1992-09-21 | 2001-06-26 | Aware, Inc. | Multi-carrier transmission system utilizing channels of different bandwidth |
EP0730757A1 (en) | 1993-01-20 | 1996-09-11 | HOPMEYER, Stanley | Underwater camera housing for still- and motion-picture cameras |
US5559833A (en) | 1993-01-20 | 1996-09-24 | U.S. Philips Corporation | Transmission system comprising timing recovery |
EP0613267A2 (en) | 1993-02-08 | 1994-08-31 | Koninklijke Philips Electronics N.V. | OFDM system with cross-talk reduction |
US5675572A (en) * | 1993-07-28 | 1997-10-07 | Sony Corporation | Orthogonal frequency division multiplex modulation apparatus and orthogonal frequency division multiplex demodulation apparatus |
US5506836A (en) * | 1993-07-28 | 1996-04-09 | Sony Corporation | Orthogonal frequency division multiplex demodulation |
EP0653859A1 (en) | 1993-11-11 | 1995-05-17 | Gpt Limited | Discrete multiple tone transmission on high-speed digital subscriber lines |
US5646935A (en) * | 1994-03-15 | 1997-07-08 | Kabushiki Kaisha Toshiba | Hierarchical quadrature frequency multiplex signal format and apparatus for transmission and reception thereof |
US5732068A (en) | 1994-05-09 | 1998-03-24 | Victor Company Of Japan, Ltd. | Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing |
US5903546A (en) | 1994-08-31 | 1999-05-11 | Sony Corporation | Means and method of improving multiplexed transmission and reception by coding and modulating divided digital signals |
US5694389A (en) * | 1995-02-24 | 1997-12-02 | Kabushiki Kaisha Toshiba | OFDM transmission/reception system and transmitting/receiving apparatus |
EP0730357A2 (en) | 1995-03-01 | 1996-09-04 | Telia Ab | Frequency and frame synchronisation for OFDM |
DE19520353A1 (en) | 1995-06-07 | 1996-12-12 | Thomson Brandt Gmbh | Method and circuit arrangement for improving the reception behavior when transmitting digital signals |
US6009073A (en) | 1995-09-25 | 1999-12-28 | Victor Company Of Japan, Ltd. | Method for transmitting an orthogonal frequency division multiplex signal, apparatus for transmitting the signal and apparatus for receiving the signal |
US5787123A (en) * | 1995-10-30 | 1998-07-28 | Sony Corporation | Receiver for orthogonal frequency division multiplexed signals |
US6125150A (en) * | 1995-10-30 | 2000-09-26 | The Board Of Trustees Of The Leland Stanford, Junior University | Transmission system using code designed for transmission with periodic interleaving |
US5966401A (en) * | 1995-12-27 | 1999-10-12 | Kumar; Derek D. | RF simplex spread spectrum receiver and method with symbol deinterleaving prior to bit estimating |
US5631610A (en) * | 1996-01-25 | 1997-05-20 | Aware, Inc. | Single side-band modulation system for use in digitally implemented multicarrier transmission systems |
US5949796A (en) | 1996-06-19 | 1999-09-07 | Kumar; Derek D. | In-band on-channel digital broadcasting method and system |
US5732113A (en) | 1996-06-20 | 1998-03-24 | Stanford University | Timing and frequency synchronization of OFDM signals |
US5946292A (en) * | 1996-08-06 | 1999-08-31 | Mitsubishi Denki Kabushiki Kaisha | Method and digital receiver for receiving orthogonal frequency-division multiplexed signals |
US6173016B1 (en) * | 1996-08-23 | 2001-01-09 | Sony Corporation | Transmission method, transmission apparatus and reception method and reception apparatus |
US5841813A (en) * | 1996-09-04 | 1998-11-24 | Lucent Technologies Inc. | Digital communications system using complementary codes and amplitude modulation |
US5953311A (en) * | 1997-02-18 | 1999-09-14 | Discovision Associates | Timing synchronization in a receiver employing orthogonal frequency division multiplexing |
US5867478A (en) * | 1997-06-20 | 1999-02-02 | Motorola, Inc. | Synchronous coherent orthogonal frequency division multiplexing system, method, software and device |
US6175551B1 (en) * | 1997-07-31 | 2001-01-16 | Lucent Technologies, Inc. | Transmission system and method employing peak cancellation to reduce the peak-to-average power ratio |
US6038450A (en) * | 1997-09-12 | 2000-03-14 | Lucent Technologies, Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
US7145955B1 (en) | 1999-04-23 | 2006-12-05 | Sony Deutschland Gmbh | Optimized synchronization preamble structure |
US6738443B1 (en) | 1999-06-16 | 2004-05-18 | Sony International (Europe) Gmbh | Optimized synchronization preamble structure |
US20040196916A1 (en) | 1999-06-16 | 2004-10-07 | Ralf Bohnke | Optimized synchronization preamble structure |
Non-Patent Citations (2)
Title |
---|
Cuthbert Nyack; "Fourier Series Symmetries"; XP-002347385; Sep. 29, 2005, pp. 1-2. |
Schmidl, Timothy M. et al., "Low-Overhead, Low-Complexity [Burst] Synchronization for OFDM", Jun. 23, 1996, pp. 1301-1306, XP000625022. |
Also Published As
Publication number | Publication date |
---|---|
USRE43829E1 (en) | 2012-11-27 |
USRE43703E1 (en) | 2012-10-02 |
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Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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Year of fee payment: 12 |
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Owner name: WI-FI ONE, LLC, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SONY CORPORATION;REEL/FRAME:045853/0047 Effective date: 20180126 |
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Owner name: CORTLAND CAPITAL MARKET SERVICES LLC, AS COLLATERA Free format text: INTELLECTUAL PROPERTY SECURITY AGREEMENT;ASSIGNOR:WI-FI ONE, LLC;REEL/FRAME:046222/0786 Effective date: 20180521 |
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Owner name: WI-FI ONE, LLC, TEXAS Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:CORTLAND CAPITAL MARKET SERVICES LLC;REEL/FRAME:058014/0725 Effective date: 20211103 |
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Owner name: REDWOOD TECHNOLOGIES, LLC, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WI-FI ONE, LLC;REEL/FRAME:058026/0232 Effective date: 20211103 |