KR100689175B1 - 적응형 변조 무선 통신 시스템을 위한 개선된 프레임 구조 - Google Patents
적응형 변조 무선 통신 시스템을 위한 개선된 프레임 구조 Download PDFInfo
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- KR100689175B1 KR100689175B1 KR1020077000364A KR20077000364A KR100689175B1 KR 100689175 B1 KR100689175 B1 KR 100689175B1 KR 1020077000364 A KR1020077000364 A KR 1020077000364A KR 20077000364 A KR20077000364 A KR 20077000364A KR 100689175 B1 KR100689175 B1 KR 100689175B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
- H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
- H04L1/0004—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes applied to control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0064—Concatenated codes
- H04L1/0065—Serial concatenated codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03375—Passband transmission
- H04L2025/0342—QAM
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
- H04L2025/03439—Fixed structures
- H04L2025/03445—Time domain
- H04L2025/03471—Tapped delay lines
- H04L2025/03477—Tapped delay lines not time-recursive
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Description
Claims (4)
- 필터가 가변 변조 속도를 갖는 기호를 수신하고 복수개의 기호를 저장하며, 각 저장된 기호는 대응하는 가중치를 갖는, 유한 임펄스 응답 필터(a finite impulse response filter)의 가중치값을 설정하는 방법으로서,제1 기호가 수신될 때, 최후 저장된 수신 기호와는 다른 변조 속도를 갖는지를 결정하는 단계와,상기 제1 기호의 변조 속도에 기초하여 제1 기호에 대응하는 가중치의 값을 변경시키는 단계를 포함하는 방법.
- 제1항에 있어서,상기 제1 기호의 변조 속도와 같은 변조 속도를 갖는 제2 기호를 수신하는 단계와,상기 제1 기호의 변조 속도에 기초하여, 제1 기호에 대응하는 가중치의 값을 변경시키는 단계를 더 포함하는 방법.
- 제2항에 있어서,상기 제1 기호의 변조 속도와 같은 변조 속도를 갖는 제3 기호를 수신하는 단계와,상기 제1 기호의 변조 속도에 기초하여, 제1 기호에 대응하는 가중치의 값을 변경시키는 단계를 더 포함하는 방법.
- 필터가 가변 변조 속도를 갖는 기호들을 수신하고, 복수개의 기호들을 필터 탭 T0 내지 Tk에 저장하며, 각 저장된 기호는 대응하는 가중치를 갖는, 유한 임펄스 응답 필터의 가중치값 W0 내지 Wk를 설정하는 방법으로서,새로운 변조 체계의 제1 기호가 T0에 수신되는 때에, T0과 관련된 필터 가중치 W0을 새로운 필터 가중치 W0'로 대체하는 단계- W0'는 T0에 저장된 상기 제1의 새로운 기호의 변조 체계에 대하여 최적화됨 -와,상기 새로운 변조 체계로부터 다음 기호가 수신되어 T0에 저장되고, 상기 제1의 새로운 기호가 T1으로 시프트되는 때에, T1과 관련된 필터 가중치 W1을 새로운 필터 가중치 W1'로 대체하는 단계- W1'는 상기 새로운 변조 체계에 대하여도 최적화됨 -와,상기 새로운 변조 체계에 속하는 상기 탭 내에 저장된 모든 상기 기호와 모든 상기 필터 가중치 W0 내지 Wk가 상기 새로운 변조 체계와 관련되거나 최적화될 때까지 상기 프로세스를 반복하는 단계를 포함하는 방법.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/365,917 US6804211B1 (en) | 1999-08-03 | 1999-08-03 | Frame structure for an adaptive modulation wireless communication system |
| US09/365,917 | 1999-08-03 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020027000912A Division KR100689176B1 (ko) | 1999-08-03 | 2000-07-28 | 적응형 변조 무선 통신 시스템을 위한 개선된 프레임 구조 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20070014232A KR20070014232A (ko) | 2007-01-31 |
| KR100689175B1 true KR100689175B1 (ko) | 2007-03-08 |
Family
ID=23440931
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020077000364A Expired - Fee Related KR100689175B1 (ko) | 1999-08-03 | 2000-07-28 | 적응형 변조 무선 통신 시스템을 위한 개선된 프레임 구조 |
| KR1020077000363A Expired - Fee Related KR100689173B1 (ko) | 1999-08-03 | 2000-07-28 | 적응형 변조 무선 통신 시스템을 위한 개선된 프레임 구조 |
| KR1020027000912A Expired - Fee Related KR100689176B1 (ko) | 1999-08-03 | 2000-07-28 | 적응형 변조 무선 통신 시스템을 위한 개선된 프레임 구조 |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020077000363A Expired - Fee Related KR100689173B1 (ko) | 1999-08-03 | 2000-07-28 | 적응형 변조 무선 통신 시스템을 위한 개선된 프레임 구조 |
| KR1020027000912A Expired - Fee Related KR100689176B1 (ko) | 1999-08-03 | 2000-07-28 | 적응형 변조 무선 통신 시스템을 위한 개선된 프레임 구조 |
Country Status (12)
| Country | Link |
|---|---|
| US (6) | US6804211B1 (ko) |
| EP (3) | EP1770891A3 (ko) |
| JP (2) | JP4623900B2 (ko) |
| KR (3) | KR100689175B1 (ko) |
| CN (1) | CN1369155A (ko) |
| AU (1) | AU6387800A (ko) |
| BR (1) | BR0012910A (ko) |
| CA (1) | CA2380386C (ko) |
| DE (1) | DE60032919T2 (ko) |
| ES (1) | ES2279764T3 (ko) |
| HK (1) | HK1048716A1 (ko) |
| WO (1) | WO2001010046A2 (ko) |
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