IT1259032B - Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo - Google Patents
Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angoloInfo
- Publication number
- IT1259032B IT1259032B ITMI921271A ITMI921271A IT1259032B IT 1259032 B IT1259032 B IT 1259032B IT MI921271 A ITMI921271 A IT MI921271A IT MI921271 A ITMI921271 A IT MI921271A IT 1259032 B IT1259032 B IT 1259032B
- Authority
- IT
- Italy
- Prior art keywords
- angle
- transmission system
- optimizing
- processing
- radio transmission
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- 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)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Metodo per processare ed ottimizzare la funzione BER analogica in un sistema di trasmissione digitale in diversità di spazio e/o angolo in cui si ottimizza il collegamento radio ricercando un minimo della funzione BER analogica BERn (O); analizzando detto minimo individuando se è un minimo relativo dannoso ai fini del collegamento fino ad arrivare al minimo assoluto che realizza con sicurezza le migliori condizioni per il collegamento stesso.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI921271A IT1259032B (it) | 1992-05-25 | 1992-05-25 | Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo |
EP93108065A EP0572858B1 (en) | 1992-05-25 | 1993-05-18 | Method for minimizing the IF-estimated bit error rate function in a space/angle diversity digital radio receiver |
ES93108065T ES2170059T3 (es) | 1992-05-25 | 1993-05-18 | Metodo para minimizar la funcion de velocidad de error de bit estimada en if, en un receptor de radio digital con diversificacion espacial/angular. |
DE69331567T DE69331567T2 (de) | 1992-05-25 | 1993-05-18 | Verfahren zur Minimierung der ZF-geschätzten Bitfehlerratefunktion in einem digitalen Raum/Winkeldiversity-Funkempfänger |
NO931847A NO304917B1 (no) | 1992-05-25 | 1993-05-21 | FremgangsmÕte for Õ optimalisere den analoge BER-funksjon i en digital radiomottaker med rom/vinkeldiversitet |
JP5145735A JPH06181450A (ja) | 1992-05-25 | 1993-05-25 | 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におけるアナログber関数を処理し、最適化する方法 |
US08/304,624 US5581583A (en) | 1992-05-25 | 1994-09-12 | Optimizing the analog BER function in a spatial angular diversity digital radio receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI921271A IT1259032B (it) | 1992-05-25 | 1992-05-25 | Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI921271A0 ITMI921271A0 (it) | 1992-05-25 |
ITMI921271A1 ITMI921271A1 (it) | 1993-11-25 |
IT1259032B true IT1259032B (it) | 1996-03-11 |
Family
ID=11363376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI921271A IT1259032B (it) | 1992-05-25 | 1992-05-25 | Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo |
Country Status (7)
Country | Link |
---|---|
US (1) | US5581583A (it) |
EP (1) | EP0572858B1 (it) |
JP (1) | JPH06181450A (it) |
DE (1) | DE69331567T2 (it) |
ES (1) | ES2170059T3 (it) |
IT (1) | IT1259032B (it) |
NO (1) | NO304917B1 (it) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6252898B1 (en) * | 1995-07-19 | 2001-06-26 | Hitachi Denshi Kabushiki Kaisha | Spread spectrum communication method and system wherein data rate of data to be transmitted is changed in accordance with transmission quality |
US6314127B1 (en) * | 1999-02-23 | 2001-11-06 | Lucent Technologies Inc. | System and method for enhancing signal reception |
IT1318274B1 (it) * | 2000-07-28 | 2003-07-28 | Siemens Inf & Comm Networks | Procedimento per automatizzare l'equalizzazione preliminare deisegnali combinati nei radioricevitori in diversita' di spazio. |
US6504517B1 (en) * | 2000-09-12 | 2003-01-07 | Lucent Technologies Inc. | Variable sectorization tower top applique for base stations |
US8204149B2 (en) | 2003-12-17 | 2012-06-19 | Qualcomm Incorporated | Spatial spreading in a multi-antenna communication system |
US7336746B2 (en) | 2004-12-09 | 2008-02-26 | Qualcomm Incorporated | Data transmission with spatial spreading in a MIMO communication system |
US20050180312A1 (en) * | 2004-02-18 | 2005-08-18 | Walton J. R. | Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system |
US8169889B2 (en) | 2004-02-18 | 2012-05-01 | Qualcomm Incorporated | Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system |
US8285226B2 (en) * | 2004-05-07 | 2012-10-09 | Qualcomm Incorporated | Steering diversity for an OFDM-based multi-antenna communication system |
US8923785B2 (en) | 2004-05-07 | 2014-12-30 | Qualcomm Incorporated | Continuous beamforming for a MIMO-OFDM system |
US7110463B2 (en) * | 2004-06-30 | 2006-09-19 | Qualcomm, Incorporated | Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system |
US7978649B2 (en) * | 2004-07-15 | 2011-07-12 | Qualcomm, Incorporated | Unified MIMO transmission and reception |
US7978778B2 (en) | 2004-09-03 | 2011-07-12 | Qualcomm, Incorporated | Receiver structures for spatial spreading with space-time or space-frequency transmit diversity |
US8543070B2 (en) | 2006-04-24 | 2013-09-24 | Qualcomm Incorporated | Reduced complexity beam-steered MIMO OFDM system |
US8290089B2 (en) | 2006-05-22 | 2012-10-16 | Qualcomm Incorporated | Derivation and feedback of transmit steering matrix |
JP5199484B2 (ja) * | 2008-12-09 | 2013-05-15 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | マルチブランチ受信機のためのシンボルタイミング回復技術 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR333167A (fr) * | 1903-06-18 | 1903-11-17 | Edward Hasselbach | Jeu de billard |
US3864633A (en) * | 1972-08-23 | 1975-02-04 | Sperry Rand Corp | Angle diversity communication system |
US3879664A (en) * | 1973-05-07 | 1975-04-22 | Signatron | High speed digital communication receiver |
US4261056A (en) * | 1979-07-16 | 1981-04-07 | Bell Telephone Laboratories, Incorporated | Equalizing signal combiner |
US4373207A (en) * | 1980-12-17 | 1983-02-08 | Bell Telephone Laboratories, Incorporated | Space diversity signal combiner |
US4512034A (en) * | 1983-07-11 | 1985-04-16 | At&T Bell Laboratories | Technique for digital radio space diversity combining |
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 |
CA2012120C (en) * | 1989-03-15 | 1994-10-18 | Seiji Kondou | Interference detection apparatus for use in digital mobile communications system |
US4998264A (en) * | 1989-09-20 | 1991-03-05 | Data Broadcasting Corporation | Method and apparatus for recovering data, such as teletext data encoded into television signals |
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 ITMI921271A patent/IT1259032B/it active IP Right Grant
-
1993
- 1993-05-18 DE DE69331567T patent/DE69331567T2/de not_active Expired - Fee Related
- 1993-05-18 ES ES93108065T patent/ES2170059T3/es not_active Expired - Lifetime
- 1993-05-18 EP EP93108065A patent/EP0572858B1/en not_active Expired - Lifetime
- 1993-05-21 NO NO931847A patent/NO304917B1/no not_active IP Right Cessation
- 1993-05-25 JP JP5145735A patent/JPH06181450A/ja active Pending
-
1994
- 1994-09-12 US US08/304,624 patent/US5581583A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
NO931847D0 (no) | 1993-05-21 |
DE69331567T2 (de) | 2002-10-10 |
EP0572858A1 (en) | 1993-12-08 |
ITMI921271A1 (it) | 1993-11-25 |
US5581583A (en) | 1996-12-03 |
NO304917B1 (no) | 1999-03-01 |
ITMI921271A0 (it) | 1992-05-25 |
EP0572858B1 (en) | 2002-02-13 |
DE69331567D1 (de) | 2002-03-21 |
JPH06181450A (ja) | 1994-06-28 |
ES2170059T3 (es) | 2002-08-01 |
NO931847L (no) | 1993-11-26 |
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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: 19990430 |