IT1259031B - Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali - Google Patents
Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canaliInfo
- Publication number
- IT1259031B IT1259031B ITMI921270A ITMI921270A IT1259031B IT 1259031 B IT1259031 B IT 1259031B IT MI921270 A ITMI921270 A IT MI921270A IT MI921270 A ITMI921270 A IT MI921270A IT 1259031 B IT1259031 B IT 1259031B
- Authority
- IT
- Italy
- Prior art keywords
- channels
- optimize
- transmission system
- variing
- corner
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/084—Equal gain combining, only phase adjustments
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0851—Joint weighting using training sequences or error signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Metodo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversità di spazio e/o angolo variando il livello di attenuazione tra due canali in cui: si ottimizza la funzione BERn (O,T) variando la fase (O) e successivamente tenendo fisso l'ottimo di fase così trovato, si sbilancia il livello di attenuazione dei due canali, così da ottimizzare lo spettro dati ricombinato.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI921270A IT1259031B (it) | 1992-05-25 | 1992-05-25 | Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali |
DE69328889T DE69328889T2 (de) | 1992-05-25 | 1993-05-18 | Verfahren und Vorrichtung zur Minimierung der ZF-geschätzten Bitfehlerratefunktion in einem digitalen Raum/Winkeldiversity-Funkempfänger |
EP93108067A EP0575746B1 (en) | 1992-05-25 | 1993-05-18 | Method and device for optimizing the radio link for a digital radio transmission system in difference of space and/or angle by varying the relative attenuation level between the two channels |
ES93108067T ES2147187T3 (es) | 1992-05-25 | 1993-05-18 | Metodo y dispositivo para optimizar el radioenlace para un sistema de transmision digital que emplea diversidad espacial y/o angular mediante la variacion del nivel de atenuacion relativa entre los dos canales. |
NO931846A NO304209B1 (no) | 1992-05-25 | 1993-05-21 | FremgangsmÕte for optimalisering av en radioforbindelse |
US08/066,386 US5481569A (en) | 1992-05-25 | 1993-05-21 | Optimizing the analog bit function in a diversity radio receiver by varying the relative attenuation level between two channels after optimizing the relative phase between the two channels |
JP5145736A JPH06169271A (ja) | 1992-05-25 | 1993-05-25 | 2つのチャンネル間の相対的な減衰レベルを変化することによる空間差および、または角度差におけるデジタル無線伝送システム用無線リンクの最適化方法および装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI921270A IT1259031B (it) | 1992-05-25 | 1992-05-25 | Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI921270A0 ITMI921270A0 (it) | 1992-05-25 |
ITMI921270A1 ITMI921270A1 (it) | 1993-11-25 |
IT1259031B true IT1259031B (it) | 1996-03-11 |
Family
ID=11363375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI921270A IT1259031B (it) | 1992-05-25 | 1992-05-25 | Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali |
Country Status (7)
Country | Link |
---|---|
US (1) | US5481569A (it) |
EP (1) | EP0575746B1 (it) |
JP (1) | JPH06169271A (it) |
DE (1) | DE69328889T2 (it) |
ES (1) | ES2147187T3 (it) |
IT (1) | IT1259031B (it) |
NO (1) | NO304209B1 (it) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3388938B2 (ja) * | 1995-04-26 | 2003-03-24 | 富士通株式会社 | ダイバーシチ受信機 |
FI106669B (fi) | 1997-08-20 | 2001-03-15 | Nokia Networks Oy | Lähetysmenetelmä ja radiojärjestelmä |
GB2332124B (en) * | 1997-12-05 | 2002-07-17 | British Broadcasting Corp | Digital radio communication system |
US6382331B1 (en) * | 2000-04-17 | 2002-05-07 | Noble Drilling Services, Inc. | Method of and system for optimizing rate of penetration based upon control variable correlation |
DE10026538A1 (de) * | 2000-05-27 | 2001-11-29 | Deutsche Telekom Ag | Verfahren und Diversity-Empfangsvorrichtung zum Empfangen eines Mehrträger-Signals |
JP5657513B2 (ja) * | 2011-12-26 | 2015-01-21 | 日本電信電話株式会社 | 無線通信システム |
JP5657514B2 (ja) * | 2011-12-26 | 2015-01-21 | 日本電信電話株式会社 | 無線通信システム |
US10700797B2 (en) | 2017-07-07 | 2020-06-30 | Nxp B.V. | Signal processing using multiple sources |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57129044A (en) * | 1981-02-03 | 1982-08-10 | Fujitsu Ltd | Space diversity receiving system |
JPS57147350A (en) * | 1981-03-06 | 1982-09-11 | Fujitsu Ltd | Space diversity reception system |
FR2628914B1 (fr) * | 1988-03-18 | 1990-06-29 | Alcatel Thomson Faisceaux | Recepteur pour systeme de transmission par voie hertzienne a diversite d'espace, comprenant un combineur de diversite |
NZ239733A (en) * | 1990-09-21 | 1994-04-27 | Ericsson Ge Mobile Communicat | Mobile telephone diversity reception with predetect signal combination |
-
1992
- 1992-05-25 IT ITMI921270A patent/IT1259031B/it active IP Right Grant
-
1993
- 1993-05-18 EP EP93108067A patent/EP0575746B1/en not_active Expired - Lifetime
- 1993-05-18 ES ES93108067T patent/ES2147187T3/es not_active Expired - Lifetime
- 1993-05-18 DE DE69328889T patent/DE69328889T2/de not_active Expired - Fee Related
- 1993-05-21 US US08/066,386 patent/US5481569A/en not_active Expired - Lifetime
- 1993-05-21 NO NO931846A patent/NO304209B1/no not_active IP Right Cessation
- 1993-05-25 JP JP5145736A patent/JPH06169271A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE69328889D1 (de) | 2000-07-27 |
ITMI921270A1 (it) | 1993-11-25 |
ES2147187T3 (es) | 2000-09-01 |
US5481569A (en) | 1996-01-02 |
NO931846L (no) | 1993-11-26 |
JPH06169271A (ja) | 1994-06-14 |
ITMI921270A0 (it) | 1992-05-25 |
NO931846D0 (no) | 1993-05-21 |
DE69328889T2 (de) | 2001-01-11 |
NO304209B1 (no) | 1998-11-09 |
EP0575746B1 (en) | 2000-06-21 |
EP0575746A1 (en) | 1993-12-29 |
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Legal Events
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0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19990430 |