SE464551B - Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem - Google Patents
Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystemInfo
- Publication number
- SE464551B SE464551B SE8902993A SE8902993A SE464551B SE 464551 B SE464551 B SE 464551B SE 8902993 A SE8902993 A SE 8902993A SE 8902993 A SE8902993 A SE 8902993A SE 464551 B SE464551 B SE 464551B
- Authority
- SE
- Sweden
- Prior art keywords
- antennas
- phase
- fixed station
- time
- radio communication
- 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
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0682—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission using phase diversity (e.g. phase sweeping)
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0676—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using random or pseudo-random delays
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Radio Relay Systems (AREA)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8902993A SE464551B (sv) | 1989-09-12 | 1989-09-12 | Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem |
KR1019910700461A KR920702105A (ko) | 1989-09-12 | 1990-07-19 | 시분할 다중 무선 통신시스템에서 바람직하지 못한 수신의 위험을 줄이는 방법 |
CA002041647A CA2041647A1 (en) | 1989-09-12 | 1990-07-19 | Method of reducing the risk for poor reception in a time multiplexed radio communication system |
EP90850273A EP0419429A1 (en) | 1989-09-12 | 1990-07-19 | Method of reducing the risk for poor reception in a time multiplexed radio communication system |
AU63308/90A AU624270B2 (en) | 1989-09-12 | 1990-07-19 | Method of reducing the risk for poor reception in a time multiplexed radio communication system |
PCT/SE1990/000496 WO1991004615A1 (en) | 1989-09-12 | 1990-07-19 | Method of reducing the risk for poor reception in a time multiplexed radio communication system |
JP2512446A JPH04503138A (ja) | 1989-09-12 | 1990-07-19 | 時多重化無線通信システムにおける受信不良の危険の低減方法 |
MYPI90001308A MY105932A (en) | 1989-09-12 | 1990-08-06 | Method of reducing the risk for poor reception in a time multiplexed radio communication system. |
IE300290A IE903002A1 (en) | 1989-09-12 | 1990-08-20 | Method of reducing the risk for poor reception in a time¹multi-plexed radio communication system |
CN90107704A CN1050293A (zh) | 1989-09-12 | 1990-09-12 | 时分多路复用无线电通信系统中减少收信质量变差的风险的方法 |
FI912176A FI912176A0 (fi) | 1989-09-12 | 1991-05-06 | Foerfarande foer att minska risken foer daolig mottagning i ett tidsmultiplext radiokommunikationssystem. |
NO91911813A NO911813L (no) | 1989-09-12 | 1991-05-10 | Fremgangsmaate for aa redusere risikoen for daarlig mottaking i et tidsmultiplekset radiokommunikasjonssystem. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8902993A SE464551B (sv) | 1989-09-12 | 1989-09-12 | Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8902993D0 SE8902993D0 (ja) | 1989-09-12 |
SE8902993L SE8902993L (sv) | 1991-03-13 |
SE464551B true SE464551B (sv) | 1991-05-06 |
Family
ID=20376855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8902993A SE464551B (sv) | 1989-09-12 | 1989-09-12 | Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0419429A1 (ja) |
JP (1) | JPH04503138A (ja) |
KR (1) | KR920702105A (ja) |
CN (1) | CN1050293A (ja) |
AU (1) | AU624270B2 (ja) |
CA (1) | CA2041647A1 (ja) |
FI (1) | FI912176A0 (ja) |
IE (1) | IE903002A1 (ja) |
MY (1) | MY105932A (ja) |
SE (1) | SE464551B (ja) |
WO (1) | WO1991004615A1 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5602834A (en) * | 1990-12-07 | 1997-02-11 | Qualcomm Incorporated | Linear coverage area antenna system for a CDMA communication system |
US5513176A (en) * | 1990-12-07 | 1996-04-30 | Qualcomm Incorporated | Dual distributed antenna system |
SE514000C2 (sv) * | 1992-04-29 | 2000-12-11 | Telia Ab | Förfarande och anordning för att minska fädningen mellan basstation och mobila enheter |
US5305353A (en) * | 1992-05-29 | 1994-04-19 | At&T Bell Laboratories | Method and apparatus for providing time diversity |
SE470371B (sv) * | 1992-06-23 | 1994-01-31 | Ericsson Telefon Ab L M | Sätt och anordning vid digital signalöverföring att hos en mottagare estimera överförda symboler |
FI934875A (fi) * | 1993-11-04 | 1995-05-05 | Nokia Telecommunications Oy | Menetelmä radiotaajuisten signaalien lähettämiseksi sekä TDMA-lähetinvastaanotin |
US5515366A (en) * | 1994-11-17 | 1996-05-07 | International Business Machines Corporation | Method and apparatus for direct communication in a TDMA radio communication system |
US5649287A (en) * | 1995-03-29 | 1997-07-15 | Telefonaktiebolaget Lm Ericsson | Orthogonalizing methods for antenna pattern nullfilling |
SE518010C2 (sv) * | 1995-07-20 | 2002-08-13 | Telia Ab | Antennanordning |
US6847658B1 (en) | 1998-12-10 | 2005-01-25 | Qualcomm, Incorporated | Demultiplexer for channel interleaving |
US6925067B2 (en) | 1999-04-23 | 2005-08-02 | Qualcomm, Incorporated | Configuration of overhead channels in a mixed bandwidth system |
SE516105C2 (sv) * | 1999-06-11 | 2001-11-19 | Allgon Ab | En metod för att styra strålningsmönstret hos en antenn, ett antennsystem och en radiokommunikationsanordning |
DE10142404B4 (de) * | 2001-08-31 | 2005-09-08 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren zur Funkübertragung von digitalen Nachrichtensignalen |
JP3997890B2 (ja) | 2001-11-13 | 2007-10-24 | 松下電器産業株式会社 | 送信方法及び送信装置 |
US7356089B2 (en) * | 2003-09-05 | 2008-04-08 | Nortel Networks Limited | Phase offset spatial multiplexing |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5815341A (ja) * | 1981-07-22 | 1983-01-28 | Nec Corp | 送信ダイバーシティ信号の送信方法および装置 |
-
1989
- 1989-09-12 SE SE8902993A patent/SE464551B/sv not_active IP Right Cessation
-
1990
- 1990-07-19 CA CA002041647A patent/CA2041647A1/en not_active Abandoned
- 1990-07-19 AU AU63308/90A patent/AU624270B2/en not_active Ceased
- 1990-07-19 EP EP90850273A patent/EP0419429A1/en not_active Withdrawn
- 1990-07-19 JP JP2512446A patent/JPH04503138A/ja active Pending
- 1990-07-19 WO PCT/SE1990/000496 patent/WO1991004615A1/en active Application Filing
- 1990-07-19 KR KR1019910700461A patent/KR920702105A/ko not_active Application Discontinuation
- 1990-08-06 MY MYPI90001308A patent/MY105932A/en unknown
- 1990-08-20 IE IE300290A patent/IE903002A1/en unknown
- 1990-09-12 CN CN90107704A patent/CN1050293A/zh active Pending
-
1991
- 1991-05-06 FI FI912176A patent/FI912176A0/fi not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0419429A1 (en) | 1991-03-27 |
MY105932A (en) | 1995-02-28 |
CA2041647A1 (en) | 1991-03-13 |
SE8902993D0 (ja) | 1989-09-12 |
WO1991004615A1 (en) | 1991-04-04 |
AU6330890A (en) | 1991-04-18 |
AU624270B2 (en) | 1992-06-04 |
KR920702105A (ko) | 1992-08-12 |
CN1050293A (zh) | 1991-03-27 |
FI912176A0 (fi) | 1991-05-06 |
JPH04503138A (ja) | 1992-06-04 |
IE903002A1 (en) | 1991-03-27 |
SE8902993L (sv) | 1991-03-13 |
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NUG | Patent has lapsed |
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