IT1258806B - Metodo e sistema per il controllo della minima distanza tra errori consecutivi in trasmissioni radio digitali - Google Patents
Metodo e sistema per il controllo della minima distanza tra errori consecutivi in trasmissioni radio digitaliInfo
- Publication number
- IT1258806B IT1258806B ITMI920109A ITMI920109A IT1258806B IT 1258806 B IT1258806 B IT 1258806B IT MI920109 A ITMI920109 A IT MI920109A IT MI920109 A ITMI920109 A IT MI920109A IT 1258806 B IT1258806 B IT 1258806B
- Authority
- IT
- Italy
- Prior art keywords
- delay
- flow
- minimum distance
- digital radio
- distance control
- Prior art date
Links
Classifications
-
- 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
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
La presente invenzione riguarda un metodo per il controllo della minima distanza tra errori consecutivi in trasmissione radio numeriche, per il caso in cui vengano utilizzate modulazioni multilivello. Con tale metodo si distanziano gli errori secondo le necessità, con un utilizzo di hardware estremamente ridotto rispetto ad altre tecniche note.Il metodo si caratterizza per il fatto che, in trasmissione ad ogni flusso parallelo non ancora modulato si applica un ritardo differenziale, cioè diverso da flusso a flusso, e in ricezione si applica su ogni flusso demodulato un ritardo anch'esso differenziale in modo tale che il ritardo complessivo applicato su ogni flusso, cioè la somma del ritardo applicato in trasmissione e del ritardo applicato in ricezione sia costante ed uguale per tutti i flussi.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI920109A IT1258806B (it) | 1992-01-22 | 1992-01-22 | Metodo e sistema per il controllo della minima distanza tra errori consecutivi in trasmissioni radio digitali |
NO930071A NO302010B1 (no) | 1992-01-22 | 1993-01-11 | Fremgangsmåte og system for feilkontroll |
ES93100616T ES2135422T3 (es) | 1992-01-22 | 1993-01-16 | Metodo y sistema para controlar la distancia minima entre errores sucesivos en transmision de radio digital. |
EP93100616A EP0552693B1 (en) | 1992-01-22 | 1993-01-16 | Method and system for controlling the minimal distance between successive errors in digital radio transmission |
DE69326265T DE69326265T2 (de) | 1992-01-22 | 1993-01-16 | Verfahren und System zur Beschränkung des minimalen Abstands zwischen aufeinanderfolgenden Fehlern bei digitaler Funkübertragung |
JP5009154A JPH0614010A (ja) | 1992-01-22 | 1993-01-22 | デジタル無線伝送における連続したエラー間の最小距離を制御する方法およびシステム |
US08/944,243 US5937008A (en) | 1992-01-22 | 1997-10-06 | Method and system for controlling the minimal distance between successive errors in digital radio transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI920109A IT1258806B (it) | 1992-01-22 | 1992-01-22 | Metodo e sistema per il controllo della minima distanza tra errori consecutivi in trasmissioni radio digitali |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI920109A0 ITMI920109A0 (it) | 1992-01-22 |
ITMI920109A1 ITMI920109A1 (it) | 1993-07-22 |
IT1258806B true IT1258806B (it) | 1996-02-29 |
Family
ID=11361629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI920109A IT1258806B (it) | 1992-01-22 | 1992-01-22 | Metodo e sistema per il controllo della minima distanza tra errori consecutivi in trasmissioni radio digitali |
Country Status (7)
Country | Link |
---|---|
US (1) | US5937008A (it) |
EP (1) | EP0552693B1 (it) |
JP (1) | JPH0614010A (it) |
DE (1) | DE69326265T2 (it) |
ES (1) | ES2135422T3 (it) |
IT (1) | IT1258806B (it) |
NO (1) | NO302010B1 (it) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2602636B2 (ja) * | 1994-12-14 | 1997-04-23 | 積水化学工業株式会社 | 既設管のライニング工法 |
KR100390582B1 (ko) * | 2001-05-10 | 2003-07-07 | 주식회사 라이온텍 | 펄스폭 비트 반전을 이용한 송신장치, 수신장치 및 이를이용한 전송장치 및 선로 부호화 방법 |
US6492606B1 (en) | 2001-08-21 | 2002-12-10 | Electroswitch Corporation | Snap action switch |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3585586A (en) * | 1968-08-28 | 1971-06-15 | Datamax Inc | Facsimile transmission system |
US3573729A (en) * | 1969-05-29 | 1971-04-06 | Bell Telephone Labor Inc | Error detection in multilevel transmission |
WO1983001360A1 (en) * | 1981-10-08 | 1983-04-14 | Furse, Anthony, Gordon | Data communication system |
JPS607251A (ja) * | 1983-06-27 | 1985-01-16 | Nec Corp | 差動符号化方式および装置 |
US4630286A (en) * | 1984-10-10 | 1986-12-16 | Paradyne Corporation | Device for synchronization of multiple telephone circuits |
US4677626A (en) * | 1985-03-01 | 1987-06-30 | Paradyne Corporation | Self-synchronizing interleaver for trellis encoder used in wireline modems |
-
1992
- 1992-01-22 IT ITMI920109A patent/IT1258806B/it active IP Right Grant
-
1993
- 1993-01-11 NO NO930071A patent/NO302010B1/no not_active IP Right Cessation
- 1993-01-16 ES ES93100616T patent/ES2135422T3/es not_active Expired - Lifetime
- 1993-01-16 EP EP93100616A patent/EP0552693B1/en not_active Expired - Lifetime
- 1993-01-16 DE DE69326265T patent/DE69326265T2/de not_active Expired - Lifetime
- 1993-01-22 JP JP5009154A patent/JPH0614010A/ja active Pending
-
1997
- 1997-10-06 US US08/944,243 patent/US5937008A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2135422T3 (es) | 1999-11-01 |
NO930071L (no) | 1993-07-23 |
ITMI920109A0 (it) | 1992-01-22 |
JPH0614010A (ja) | 1994-01-21 |
EP0552693A3 (it) | 1994-02-23 |
DE69326265D1 (de) | 1999-10-14 |
EP0552693B1 (en) | 1999-09-08 |
US5937008A (en) | 1999-08-10 |
DE69326265T2 (de) | 2000-03-23 |
NO302010B1 (no) | 1998-01-05 |
ITMI920109A1 (it) | 1993-07-22 |
NO930071D0 (no) | 1993-01-11 |
EP0552693A2 (en) | 1993-07-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19981231 |