BRPI0721941A2 - Sensoriamento de espectro para sinais de ofdm utilizando tons pilotos - Google Patents
Sensoriamento de espectro para sinais de ofdm utilizando tons pilotos Download PDFInfo
- Publication number
- BRPI0721941A2 BRPI0721941A2 BRPI0721941-5A BRPI0721941A BRPI0721941A2 BR PI0721941 A2 BRPI0721941 A2 BR PI0721941A2 BR PI0721941 A BRPI0721941 A BR PI0721941A BR PI0721941 A2 BRPI0721941 A2 BR PI0721941A2
- Authority
- BR
- Brazil
- Prior art keywords
- formula
- signal
- metric value
- ofdm symbols
- received
- Prior art date
Links
- 238000001228 spectrum Methods 0.000 title description 19
- 238000000034 method Methods 0.000 claims description 14
- 230000002596 correlated effect Effects 0.000 claims description 8
- 230000006870 function Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 12
- 238000004891 communication Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000001149 cognitive effect Effects 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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
- H04L27/2647—Arrangements specific to the receiver only
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Circuits Of Receivers In General (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US95937207P | 2007-07-13 | 2007-07-13 | |
| US60/959.372 | 2007-07-13 | ||
| PCT/US2007/024987 WO2009011688A1 (en) | 2007-07-13 | 2007-12-06 | Spectrum sensing for ofdm signals by utilizing pilot tones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BRPI0721941A2 true BRPI0721941A2 (pt) | 2014-03-18 |
Family
ID=39323869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI0721941-5A BRPI0721941A2 (pt) | 2007-07-13 | 2007-12-06 | Sensoriamento de espectro para sinais de ofdm utilizando tons pilotos |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8433006B2 (enExample) |
| EP (1) | EP2171956B1 (enExample) |
| JP (1) | JP5477914B2 (enExample) |
| KR (1) | KR101444835B1 (enExample) |
| CN (1) | CN101690061B (enExample) |
| BR (1) | BRPI0721941A2 (enExample) |
| WO (1) | WO2009011688A1 (enExample) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010120340A1 (en) * | 2009-04-01 | 2010-10-21 | Thomson Licensing | Method and apparatus for spectrum sensing of atsc and ntsc television signals |
| ES2458547T3 (es) * | 2009-05-14 | 2014-05-06 | Koninklijke Philips N.V. | Detección robusta de transmisiones DVB-T/H en presencia de desplazamientos de frecuencia |
| EP2430809B1 (en) * | 2009-05-14 | 2014-03-12 | Koninklijke Philips N.V. | Robust sensing of dvb-t/h transmissions |
| US8749714B2 (en) * | 2010-01-05 | 2014-06-10 | Qualcomm Incorporated | Distinguishing and communicating between white space devices transmitting ATSC-compatible signals |
| EP2346224A1 (en) | 2010-01-13 | 2011-07-20 | Panasonic Corporation | Pilot Patterns for OFDM Systems with Four Transmit Antennas |
| US8306550B2 (en) | 2010-01-21 | 2012-11-06 | Qualcomm Incorporated | Automatic gain control in radio frequency receivers |
| KR101134399B1 (ko) * | 2010-10-29 | 2012-04-09 | 동명대학교산학협력단 | 인지 라디오 환경에서 협력적 스펙트럼 감지 방법 |
| JP5668003B2 (ja) | 2012-03-09 | 2015-02-12 | 株式会社東芝 | 信号識別装置 |
| US8976906B2 (en) | 2012-03-29 | 2015-03-10 | QRC, Inc. | Method for spectrum sensing of multi-carrier signals with equidistant sub-carriers |
| US8982971B2 (en) | 2012-03-29 | 2015-03-17 | QRC, Inc. | System for spectrum sensing of multi-carrier signals with equidistant sub-carriers |
| FR2989242A1 (fr) * | 2012-04-10 | 2013-10-11 | France Telecom | Procede de traitement d'un signal multiporteuse recu, procede de reception d'un signal optique, programme d'ordinateur et dispositif de traitement correspondants. |
| US8908493B2 (en) * | 2012-05-01 | 2014-12-09 | Src, Inc. | NC-OFDM for a cognitive radio |
| US9348608B2 (en) | 2013-04-24 | 2016-05-24 | QRC, Inc. | System and method for registering application and application transforms on a radiofrequency digitization and collection device |
| KR102234792B1 (ko) * | 2014-09-03 | 2021-04-01 | 삼성전자주식회사 | 디지털 텔레비전 및 그 제어 방법 |
| CN106658697B (zh) * | 2015-11-04 | 2020-11-17 | 中兴通讯股份有限公司 | 同步信号发送、检测方法、基站及终端 |
| US10333693B2 (en) * | 2016-12-09 | 2019-06-25 | Micron Technology, Inc. | Wireless devices and systems including examples of cross correlating wireless transmissions |
| US11605166B2 (en) | 2019-10-16 | 2023-03-14 | Parsons Corporation | GPU accelerated image segmentation |
| WO2021150594A1 (en) | 2020-01-20 | 2021-07-29 | Parsons Corporation | Narrowband iq extraction and storage |
| US11619700B2 (en) | 2020-04-07 | 2023-04-04 | Parsons Corporation | Retrospective interferometry direction finding |
| US11569848B2 (en) | 2020-04-17 | 2023-01-31 | Parsons Corporation | Software-defined radio linking systems |
| US11575407B2 (en) | 2020-04-27 | 2023-02-07 | Parsons Corporation | Narrowband IQ signal obfuscation |
| US11849347B2 (en) | 2021-01-05 | 2023-12-19 | Parsons Corporation | Time axis correlation of pulsed electromagnetic transmissions |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4312456A1 (de) * | 1992-04-16 | 1993-10-21 | Gold Star Co | Fernsehgeisterbildlöschungsgerät |
| KR0165507B1 (ko) * | 1996-01-09 | 1999-03-20 | 김광호 | 기준신호를 이용한 등화방법과 등화기 |
| US6625200B1 (en) * | 1999-01-25 | 2003-09-23 | Ericsson Inc. | Multi-stage CDMA synchronization with parallel execution |
| KR100355376B1 (ko) * | 1999-12-15 | 2002-10-12 | 삼성전자 주식회사 | 비동기형 광대역 직접 시퀀스 코드분할다중접속수신신호에 대한 동기획득 장치 |
| US7006557B2 (en) * | 2002-01-31 | 2006-02-28 | Qualcomm Incorporated | Time tracking loop for diversity pilots |
| US6724834B2 (en) * | 2002-02-22 | 2004-04-20 | Albert L. Garrett | Threshold detector for detecting synchronization signals at correlator output during packet acquisition |
| US7522669B2 (en) * | 2003-02-21 | 2009-04-21 | Atheros Communications, Inc. | Method and apparatus for selective disregard of co-channel transmissions on a medium |
| KR100500661B1 (ko) * | 2003-06-14 | 2005-07-12 | 한국전자통신연구원 | 디지털 ｔｖ 수신기의 최적 빔 선택 장치 및 그 방법 |
| US8724447B2 (en) * | 2004-01-28 | 2014-05-13 | Qualcomm Incorporated | Timing estimation in an OFDM receiver |
| JP4606062B2 (ja) * | 2004-05-12 | 2011-01-05 | 富士通テン株式会社 | デジタル放送受信機および放送受信方法 |
| US20060084444A1 (en) | 2004-10-20 | 2006-04-20 | Nokia Corporation | System and method utilizing a cognitive transceiver for ad hoc networking |
| JP2006135674A (ja) | 2004-11-05 | 2006-05-25 | Ntt Docomo Inc | 移動通信用受信装置、移動通信用送信装置、移動通信用受信方法、および、移動通信用送信方法 |
| US7710919B2 (en) * | 2005-10-21 | 2010-05-04 | Samsung Electro-Mechanics | Systems, methods, and apparatuses for spectrum-sensing cognitive radios |
| JP2009515479A (ja) * | 2005-11-07 | 2009-04-09 | トムソン ライセンシング | 無線ネットワーク内において動的な周波数選択をする装置および方法 |
| US8045927B2 (en) * | 2006-04-27 | 2011-10-25 | Nokia Corporation | Signal detection in multicarrier communication system |
| JP4949738B2 (ja) * | 2006-05-29 | 2012-06-13 | 富士通セミコンダクター株式会社 | デジタル放送受信機、移動端末およびチャネルサーチ方法 |
| EP2127190B1 (en) * | 2007-02-08 | 2017-08-23 | Nokia Technologies Oy | Robust synchronization for time division duplex signal |
| JP5478265B2 (ja) * | 2007-03-06 | 2014-04-23 | コーニンクレッカ フィリップス エヌ ヴェ | 相関を使用して信号を検出するロバストなセンシング |
| US7688846B2 (en) * | 2007-10-31 | 2010-03-30 | Motorola, Inc. | Cooperative CSMA mode identification in clustered networks |
-
2007
- 2007-12-06 EP EP07862582.9A patent/EP2171956B1/en not_active Not-in-force
- 2007-12-06 BR BRPI0721941-5A patent/BRPI0721941A2/pt not_active Application Discontinuation
- 2007-12-06 WO PCT/US2007/024987 patent/WO2009011688A1/en not_active Ceased
- 2007-12-06 US US12/452,629 patent/US8433006B2/en not_active Expired - Fee Related
- 2007-12-06 JP JP2010516015A patent/JP5477914B2/ja not_active Expired - Fee Related
- 2007-12-06 KR KR1020107000715A patent/KR101444835B1/ko not_active Expired - Fee Related
- 2007-12-06 CN CN2007800537753A patent/CN101690061B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP2171956B1 (en) | 2018-04-11 |
| KR101444835B1 (ko) | 2014-09-26 |
| CN101690061A (zh) | 2010-03-31 |
| CN101690061B (zh) | 2013-05-22 |
| KR20100038370A (ko) | 2010-04-14 |
| US8433006B2 (en) | 2013-04-30 |
| US20100202574A1 (en) | 2010-08-12 |
| JP2010533421A (ja) | 2010-10-21 |
| JP5477914B2 (ja) | 2014-04-23 |
| WO2009011688A1 (en) | 2009-01-22 |
| EP2171956A1 (en) | 2010-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BRPI0721941A2 (pt) | Sensoriamento de espectro para sinais de ofdm utilizando tons pilotos | |
| US20100086074A1 (en) | Apparatus and method for sensing a multi-carrier signal using cyclostationarity | |
| US20090252096A1 (en) | Apparatus and Method for Dynamic Frequency Selection in Wireless Networks | |
| BRPI0721776A2 (pt) | Detecção de sinais contendo componentes de onda seno através de medição da densidade espectral da potência (psd) e espectro cíclico | |
| KR101385245B1 (ko) | 다중 경로 환경에서 변조를 분류하기 위한 장치 및 방법 | |
| KR20090120518A (ko) | 인컴번트 신호들에 대한 ｆｆｔ 기반의 파일럿 감지 | |
| EP2430809A1 (en) | Robust sensing of dvb-t/h transmissions | |
| US8238830B2 (en) | Apparatus and method for detecting free ATSE channels | |
| JP2010541376A (ja) | Ｐｎフレームヘッダーを使用したｄｍｂ−ｔシステムのためのスペクトルセンシング | |
| US20100045876A1 (en) | Apparatus and method for sensing an atsc signal in low signal-to -noise ratio | |
| CN101300833A (zh) | 以低信噪比感测高级电视系统委员会信号的装置和方法 | |
| CN101647249A (zh) | 使用循环固定性感测多载波信号的装置和方法 | |
| Kocks et al. | On spectrum sensing for TV white space in China | |
| Cordero Díaz | DVB-T pilot sensing algorithms |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B06F | Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette] | ||
| B25G | Requested change of headquarter approved |
Owner name: THOMSON LICENSING (FR) |
|
| B25A | Requested transfer of rights approved |
Owner name: THOMSON LICENSING DTV (FR) |
|
| B25A | Requested transfer of rights approved |
Owner name: INTERDIGITAL MADISON PATENT HOLDINGS (FR) |
|
| B06T | Formal requirements before examination [chapter 6.20 patent gazette] | ||
| B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
| B11B | Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements |