KR100437306B1 - 직교주파수분할 다중 변복조 회로 - Google Patents
직교주파수분할 다중 변복조 회로 Download PDFInfo
- Publication number
- KR100437306B1 KR100437306B1 KR10-2001-0033186A KR20010033186A KR100437306B1 KR 100437306 B1 KR100437306 B1 KR 100437306B1 KR 20010033186 A KR20010033186 A KR 20010033186A KR 100437306 B1 KR100437306 B1 KR 100437306B1
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- KR
- South Korea
- Prior art keywords
- signal
- modulation
- subcarrier
- frequency division
- orthogonal frequency
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
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- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
- H04L5/0046—Determination of how many bits are transmitted on different sub-channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/183—Multiresolution systems
-
- 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
- H04L27/2604—Multiresolution systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3488—Multiresolution systems
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
-
- 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
- H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
-
- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (11)
- 복수의 서브캐리어를 사용하여 통신하고 복수의 통신채널을 송수신하는 직교주파수분할 다중 변복조 회로에 있어서,상기 복수의 서브캐리어가 복수의 그룹으로 분할된 복수의 서브캐리어 그룹 각각이 상기 복수의 통신채널 각각에 할당되고,상기 서브캐리어 그룹 각각에 주어지는 변조시스템은 대응하는 통신채널에 필요한 QoS 에 따라서 변화되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 제 1 항에 있어서,상기 서브캐리어 그룹의 상기 각각의 통신채널으로의 할당은 적응적으로 수행되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 삭제
- 제 1 항에 있어서,상기 각각의 서브캐리어의 주파수축 상에서의 정렬을 랜덤화하는 수단이 송신측에 포함되고, 상기 정렬이 랜덤화된 신호를 디랜덤화하는 수단이 수신측에 포함되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 제 2 항에 있어서,필요에 따라 모든 서브캐리어가 단일의 채널에 할당되고, 한편 다른 채널의 통신은 정지되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 제 1 항에 있어서,상기 변화 가능한 변조시스템은 BPSK, QPSK, 및 QAM 중 적어도 하나를 사용하고, 위상평면 상의 심볼 포인트가 상기 QoS 에 따라서 변화되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 제 1 항에 있어서,변조심볼들의 피크치들은 상기 각각의 서브캐리어의 송신전력이 상기 변조시스템에 무관하게 동일하게 되도록 결정되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 제 4 항에 있어서,상기 각각의 서브캐리어의 위치를 랜덤화하는 처리가 매 심볼마다 갱신되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 제 8 항에 있어서,매 심볼마다 랜덤화 패턴을 결정하고 상기 랜덤화된 패턴을 상기 수신측으로 송신하는 수단이 상기 송신측에 포함되고, 상기 랜덤화 패턴의 송신 및 수신을 동기화하는 수단이 포함되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 제 9 항에 있어서,상기 랜덤화 패턴의 송신 및 수신을 동기화하는 수단으로서, 소정의 통신채널과 그에 대응하는 서브캐리어가 할당되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
- 제 10 항에 있어서,상기 소정의 통신채널과 그에 대응하는 상기 서브캐리어는 상기 랜덤화 처리로부터 제외되는 것을 특징으로 하는 직교주파수분할 다중 변복조 회로.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-177711 | 2000-06-14 | ||
JP2000177711A JP2001358692A (ja) | 2000-06-14 | 2000-06-14 | 直交周波数分割多重変復調回路 |
Publications (2)
Publication Number | Publication Date |
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KR20010112656A KR20010112656A (ko) | 2001-12-20 |
KR100437306B1 true KR100437306B1 (ko) | 2004-06-25 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR10-2001-0033186A KR100437306B1 (ko) | 2000-06-14 | 2001-06-13 | 직교주파수분할 다중 변복조 회로 |
Country Status (6)
Country | Link |
---|---|
US (3) | US7099268B2 (ko) |
EP (2) | EP1164740B1 (ko) |
JP (1) | JP2001358692A (ko) |
KR (1) | KR100437306B1 (ko) |
CN (2) | CN1855908B (ko) |
DE (1) | DE60129884T2 (ko) |
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Also Published As
Publication number | Publication date |
---|---|
CN1855908A (zh) | 2006-11-01 |
CN1284316C (zh) | 2006-11-08 |
EP1164740B1 (en) | 2007-08-15 |
JP2001358692A (ja) | 2001-12-26 |
US20110038403A1 (en) | 2011-02-17 |
EP1773015B1 (en) | 2018-02-28 |
EP1164740A3 (en) | 2003-12-17 |
EP1773015A1 (en) | 2007-04-11 |
US7843803B2 (en) | 2010-11-30 |
US20060209673A1 (en) | 2006-09-21 |
CN1329406A (zh) | 2002-01-02 |
US7099268B2 (en) | 2006-08-29 |
EP1164740A2 (en) | 2001-12-19 |
CN1855908B (zh) | 2011-04-20 |
DE60129884D1 (de) | 2007-09-27 |
KR20010112656A (ko) | 2001-12-20 |
DE60129884T2 (de) | 2008-04-30 |
US8335153B2 (en) | 2012-12-18 |
US20010053124A1 (en) | 2001-12-20 |
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