KR100878720B1 - 직교 주파수 분할 다중화 시스템에서의 최대전력 대평균전력의 비를 줄이기 위한 방법 - Google Patents
직교 주파수 분할 다중화 시스템에서의 최대전력 대평균전력의 비를 줄이기 위한 방법 Download PDFInfo
- Publication number
- KR100878720B1 KR100878720B1 KR1020070052284A KR20070052284A KR100878720B1 KR 100878720 B1 KR100878720 B1 KR 100878720B1 KR 1020070052284 A KR1020070052284 A KR 1020070052284A KR 20070052284 A KR20070052284 A KR 20070052284A KR 100878720 B1 KR100878720 B1 KR 100878720B1
- Authority
- KR
- South Korea
- Prior art keywords
- ofdm signal
- ofdm
- papr
- sequences
- ifft
- Prior art date
Links
Images
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
- H04L27/2621—Reduction thereof using phase offsets between 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
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Transmitters (AREA)
Abstract
Description
Claims (10)
- OFDM 시스템에서의 PAPR(Peak-to-Average Power Ratio)을 줄이기 위한 방법에 있어서,여기서, 상기 선형 결합단계에 의한 선형 결합 ai,k는 ciai + ckak로 표현되고, 이미 IFFT가 된 시간 영역에서 U개의 OFDM 신호 시퀀스 au의 조합을 통해서 개의 서로 다른 OFDM 신호 시퀀스를 생성하는 것을 특징으로 하는 OFDM 시스템에서의 PAPR을 줄이기 위한 방법:
- 제 1항에 있어서,상기 선형 결합은 90°의 위상지연을 두어 이루어지는 것을 특징으로 하는 OFDM 시스템에서의 PAPR을 줄이기 위한 방법.
- OFDM 시스템에서의 PAPR을 줄이기 위한 방법에 있어서,(c) 상기 (b) 단계에 기초하여 개의 서로 다른 OFDM 신호 시퀀스를 생성하는 단계를 포함하며, 상기 생성된 OFDM 신호 시퀀스는 다음과 같이 표현되는 것을 특징으로 하는 OFDM 시스템에서의 PAPR을 줄이기 위한 방법:
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070052284A KR100878720B1 (ko) | 2007-05-29 | 2007-05-29 | 직교 주파수 분할 다중화 시스템에서의 최대전력 대평균전력의 비를 줄이기 위한 방법 |
PCT/KR2007/004239 WO2008146986A1 (en) | 2007-05-29 | 2007-09-03 | A modified slm scheme with low complexity for papr reduction of ofdm systems |
US12/307,127 US7929414B2 (en) | 2007-05-29 | 2007-09-03 | Modified SLM scheme with low complexity for PAPR reduction of OFDM systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070052284A KR100878720B1 (ko) | 2007-05-29 | 2007-05-29 | 직교 주파수 분할 다중화 시스템에서의 최대전력 대평균전력의 비를 줄이기 위한 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20080104880A KR20080104880A (ko) | 2008-12-03 |
KR100878720B1 true KR100878720B1 (ko) | 2009-02-05 |
Family
ID=40075197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070052284A KR100878720B1 (ko) | 2007-05-29 | 2007-05-29 | 직교 주파수 분할 다중화 시스템에서의 최대전력 대평균전력의 비를 줄이기 위한 방법 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7929414B2 (ko) |
KR (1) | KR100878720B1 (ko) |
WO (1) | WO2008146986A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101215932B1 (ko) | 2011-04-27 | 2012-12-28 | 서울대학교산학협력단 | 부가적 맵핑 시퀀스를 이용한 직교 주파수 분할 다중화 시스템의 최대전력 대 평균전력 비 감소 방법 및 이를 위한 장치 |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10931338B2 (en) | 2001-04-26 | 2021-02-23 | Genghiscomm Holdings, LLC | Coordinated multipoint systems |
US10644916B1 (en) | 2002-05-14 | 2020-05-05 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
US11381285B1 (en) | 2004-08-02 | 2022-07-05 | Genghiscomm Holdings, LLC | Transmit pre-coding |
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 |
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 |
CA2735529A1 (en) * | 2008-08-28 | 2010-03-04 | Aclara Power-Line Systems Inc. | A general method for low-frequency data transmission on a power line |
KR101826671B1 (ko) * | 2009-03-10 | 2018-02-08 | 삼성전자 주식회사 | 단일 반송파 주파수 분할 다중 접속 시스템에서 데이터 송수신 방법 및 장치 |
CN102137055A (zh) * | 2010-09-06 | 2011-07-27 | 华为技术有限公司 | 降低光正交频分复用系统峰均功率比的方法、设备和系统 |
US8711957B2 (en) * | 2010-09-28 | 2014-04-29 | Electronics And Telecommunications Research Institute | Apparatus and method for transmitting and receiving data |
TWI423629B (zh) * | 2010-10-25 | 2014-01-11 | Univ Nat Sun Yat Sen | 降低正交分頻多工系統之峰值對平均功率比值之方法 |
CN103297374B (zh) * | 2013-06-03 | 2016-02-17 | 西南石油大学 | 一种基于叠加训练序列的低复杂度pts方法 |
CN103607265B (zh) * | 2013-11-25 | 2016-09-21 | 北京邮电大学 | 基于选择性映射方式的载波上行传输的控制方法及装置 |
CN103763235A (zh) * | 2014-01-10 | 2014-04-30 | 南开大学 | Ofdma多址接入系统的papr抑制方案 |
US10103917B2 (en) | 2016-02-05 | 2018-10-16 | Maxlinear, Inc. | Peak to average power ratio reduction in multichannel digital front-ends (DFES) |
WO2017194985A1 (en) * | 2016-05-10 | 2017-11-16 | Greenwaves Technologies | Method for reducing the number of operations for calculating the papr in selective mapping ofdm, using an ifft on-demand procedure |
US10243773B1 (en) | 2017-06-30 | 2019-03-26 | Genghiscomm Holdings, LLC | Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM |
US10637705B1 (en) | 2017-05-25 | 2020-04-28 | Genghiscomm Holdings, LLC | Peak-to-average-power reduction for OFDM multiple access |
JP7208917B2 (ja) | 2017-07-25 | 2023-01-19 | ジェンギスコム ホールディングス エルエルシー | Ofdmおよびmimo-ofdmのための効率的なピーク対平均電力低減 |
US10637544B1 (en) | 2018-04-24 | 2020-04-28 | Genghiscomm Holdings, LLC | Distributed radio system |
CN112425127A (zh) | 2018-06-17 | 2021-02-26 | 珍吉斯科姆控股有限责任公司 | 分布式无线电系统 |
CN109218245B (zh) * | 2018-09-20 | 2020-09-29 | 中天宽带技术有限公司 | 一种基于级联最优相位的papr抑制方法 |
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 |
EP3915236A4 (en) | 2019-01-25 | 2023-05-24 | Genghiscomm Holdings, LLC | ORTHOGONAL MULTI-ACCESS AND NON-ORTHOGONAL MULTI-ACCESS |
WO2020242898A1 (en) | 2019-05-26 | 2020-12-03 | Genghiscomm Holdings, LLC | Non-orthogonal multiple access |
CN110336767B (zh) * | 2019-08-01 | 2022-08-23 | 南京邮电大学 | 一种用于降低dco-ofdm信号papr的方法 |
CN111800865A (zh) * | 2019-08-12 | 2020-10-20 | 维沃移动通信有限公司 | 一种信号发送方法及发送设备 |
CN110971559B (zh) * | 2019-12-18 | 2022-02-01 | 南京信息工程大学 | 一种降低ofdm-pon信号峰均功率比的调制解调方法 |
CN114142892B (zh) * | 2021-12-02 | 2023-01-20 | 广东电网有限责任公司 | 针对高速电力线载波通信降低papr的传输方法及装置 |
CN114465861B (zh) * | 2022-01-11 | 2023-06-02 | 珠海中慧微电子有限公司 | 基于星座旋转的降低ofdm信号峰均比值的方法及装置 |
CN114465860B (zh) * | 2022-01-11 | 2023-06-23 | 珠海中慧微电子有限公司 | 一种ofdm信号的降峰均比方法、装置及存储介质 |
CN114465862B (zh) * | 2022-01-11 | 2023-06-02 | 珠海中慧微电子有限公司 | 一种降低ofdm信号峰均比值的方法、装置及存储介质 |
CN114650083B (zh) * | 2022-03-25 | 2023-11-07 | 深圳市力合微电子股份有限公司 | 一种hplc双模高速无线系统的峰均比优化方法 |
CN116170269B (zh) * | 2023-04-25 | 2023-07-14 | 四川阳辰信通科技有限公司 | 一种降低ofdm系统papr的slm优化方法及系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030067866A1 (en) * | 2001-06-19 | 2003-04-10 | Samsung Electronics Co., Ltd. | Method and apparatus for reducing peak power in partial transmit sequence OFDM |
KR20040056791A (ko) * | 2002-12-24 | 2004-07-01 | 삼성전자주식회사 | 직교주파수 분할다중화 통신시스템에서 피크전력 대평균전력 비를 감소시키기 위한 장치 및 방법 |
WO2005025102A1 (en) * | 2003-09-09 | 2005-03-17 | Samsung Electronics Co., Ltd. | Apparatus and method for reducing papr in ofdm communication system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100899747B1 (ko) * | 2003-02-13 | 2009-05-27 | 삼성전자주식회사 | 직교주파수분할다중 시스템의 첨두대평균 전력비 저감을위한 장치 및 방법 |
CN101103570B (zh) * | 2004-12-02 | 2013-04-10 | 新泽西理工学院 | 用于减小峰均功率比的方法和/或设备 |
JP2007259445A (ja) * | 2006-03-20 | 2007-10-04 | Fujitsu Ltd | Ofdm通信システムにおける送信装置及び方法 |
US20080285432A1 (en) * | 2007-05-18 | 2008-11-20 | Yeong-Luh Ueng | Method for Generating Candidates used in Turbo Coded Orthogonal Frequency-Division Multiplexing System with Selective Mapping Technique |
-
2007
- 2007-05-29 KR KR1020070052284A patent/KR100878720B1/ko active IP Right Grant
- 2007-09-03 US US12/307,127 patent/US7929414B2/en not_active Expired - Fee Related
- 2007-09-03 WO PCT/KR2007/004239 patent/WO2008146986A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030067866A1 (en) * | 2001-06-19 | 2003-04-10 | Samsung Electronics Co., Ltd. | Method and apparatus for reducing peak power in partial transmit sequence OFDM |
KR20040056791A (ko) * | 2002-12-24 | 2004-07-01 | 삼성전자주식회사 | 직교주파수 분할다중화 통신시스템에서 피크전력 대평균전력 비를 감소시키기 위한 장치 및 방법 |
WO2005025102A1 (en) * | 2003-09-09 | 2005-03-17 | Samsung Electronics Co., Ltd. | Apparatus and method for reducing papr in ofdm communication system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101215932B1 (ko) | 2011-04-27 | 2012-12-28 | 서울대학교산학협력단 | 부가적 맵핑 시퀀스를 이용한 직교 주파수 분할 다중화 시스템의 최대전력 대 평균전력 비 감소 방법 및 이를 위한 장치 |
Also Published As
Publication number | Publication date |
---|---|
US7929414B2 (en) | 2011-04-19 |
KR20080104880A (ko) | 2008-12-03 |
US20100110875A1 (en) | 2010-05-06 |
WO2008146986A1 (en) | 2008-12-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100878720B1 (ko) | 직교 주파수 분할 다중화 시스템에서의 최대전력 대평균전력의 비를 줄이기 위한 방법 | |
US11095489B2 (en) | System and method for controlling combined radio signals | |
US10616025B2 (en) | System and method for controlling combined radio signals | |
US7342978B2 (en) | Method and apparatus for PAPR reduction of an OFDM signal | |
Kwon et al. | Multi-carrier PAP reduction method using sub-optimal PTS with threshold | |
CN102932289B (zh) | Ofdm系统中基于循环移位估计移位个数及信道响应的方法 | |
CN100484116C (zh) | Ofdm通信系统及降低峰均功率比的方法 | |
Yang et al. | ACE with frame interleaving scheme to reduce peak-to-average power ratio in OFDM systems | |
CN102780656A (zh) | 一种多符号子载波干扰消除联合信道估计方法和装置 | |
Elavarasan et al. | Peak-power reduction using improved partial transmit sequence in orthogonal frequency division multiplexing systems | |
Madhavi et al. | Implementation of non linear companding technique for reducing PAPR of OFDM | |
KR100666689B1 (ko) | 위상 회전과 선택적 매핑 방식을 이용한 실시간 피크대평균전력 감소 방법 및 이를 이용하는 데이터 송신 시스템 | |
Bouquet et al. | An innovative and low complexity PAPR reduction technique for multicarrier systems | |
Ho et al. | A novel combined PAPR reduction and channel estimation approach for OFDM systems | |
Shete et al. | WHT and Double WHT: An effective PAPR reduction approach in OFDM | |
RU223097U1 (ru) | Устройство уменьшения пик-фактора сигналов в системе OFDM на основе селективного отображения сигнального созвездия | |
Rahman et al. | PAPR reduction of OFDM system using condex matrix based SLM method with low computational overhead | |
Ning et al. | An exhaustive entropy based SLM method for PAPR reduction of OFDM systems | |
Phale et al. | PAPR reduction in ofdm systems using PTS: With New Phase Sequences | |
Singh et al. | Nonlinear companding technique for PAPR reduction in OFDM | |
Ali et al. | Simulation and bit error rate performance analysis of 4G OFDM systems | |
REDDY et al. | Implementation of Weighted OFDM with Modified Weight Signal Scheme for PAPR Reduction of OFDM Signal | |
REDDY et al. | Modified Weighted OFDM Signal Scheme for PAPR Reduction of OFDM Signals | |
You et al. | OFDM-CDMA with low PAPR using cyclic-shifted sequence mapping | |
Hossain et al. | Study the Performance of SLM for Different Number of Subcarriers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20130129 Year of fee payment: 5 |
|
FPAY | Annual fee payment |
Payment date: 20140109 Year of fee payment: 6 |
|
FPAY | Annual fee payment |
Payment date: 20150120 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20151224 Year of fee payment: 8 |
|
FPAY | Annual fee payment |
Payment date: 20161227 Year of fee payment: 9 |
|
FPAY | Annual fee payment |
Payment date: 20171221 Year of fee payment: 10 |
|
FPAY | Annual fee payment |
Payment date: 20190102 Year of fee payment: 11 |
|
FPAY | Annual fee payment |
Payment date: 20200102 Year of fee payment: 12 |