WO2001018976A3 - Method and arrangement for beam forming for the downlink channel in cdma-based mobile radio telephone systems - Google Patents
Method and arrangement for beam forming for the downlink channel in cdma-based mobile radio telephone systems Download PDFInfo
- Publication number
- WO2001018976A3 WO2001018976A3 PCT/DE2000/003121 DE0003121W WO0118976A3 WO 2001018976 A3 WO2001018976 A3 WO 2001018976A3 DE 0003121 W DE0003121 W DE 0003121W WO 0118976 A3 WO0118976 A3 WO 0118976A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- paths
- cdma
- beam forming
- radio telephone
- downlink channel
- 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
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
- H01Q3/2611—Means for null steering; Adaptive interference nulling
-
- 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
- H04B7/0615—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 weighted 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
- H04B7/0615—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 weighted versions of same signal
- H04B7/0617—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 weighted versions of same signal for beam forming
-
- 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
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00974312A EP1214798A2 (en) | 1999-09-06 | 2000-09-06 | Method and arrangement for beam forming for the downlink channel in cdma-based mobile radio telephone systems |
AU12680/01A AU1268001A (en) | 1999-09-06 | 2000-09-06 | Method and arrangement for beam forming for the downlink channel in cdma-based mobile radio telephone systems |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19943688.6 | 1999-09-06 | ||
DE19943688A DE19943688C2 (en) | 1999-09-06 | 1999-09-06 | Method and arrangement for beam shaping for the downlink channel in CDMA-based mobile radio systems |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001018976A2 WO2001018976A2 (en) | 2001-03-15 |
WO2001018976A3 true WO2001018976A3 (en) | 2001-08-02 |
Family
ID=7921759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/003121 WO2001018976A2 (en) | 1999-09-06 | 2000-09-06 | Method and arrangement for beam forming for the downlink channel in cdma-based mobile radio telephone systems |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1214798A2 (en) |
AU (1) | AU1268001A (en) |
DE (1) | DE19943688C2 (en) |
WO (1) | WO2001018976A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10123334A1 (en) * | 2001-05-14 | 2002-12-05 | Infineon Technologies Ag | RAKE receiver for FDD and TDD mode |
CN102457313A (en) * | 2010-10-22 | 2012-05-16 | 中兴通讯股份有限公司 | Method and device for finishing multi-user multi-layer beam forming in time division duplex |
CN102457324B (en) * | 2010-10-29 | 2015-12-16 | 中兴通讯股份有限公司 | A kind of frequency division duplex system descending multi-user multipath beam form-endowing method and device |
CN102457320A (en) * | 2010-11-01 | 2012-05-16 | 中兴通讯股份有限公司 | Method for forming downlink multi-user multi-path wave beam of FDD (Frequency Division Duplexing) system and device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3300252B2 (en) * | 1997-04-02 | 2002-07-08 | 松下電器産業株式会社 | Adaptive transmission diversity apparatus and adaptive transmission diversity method |
-
1999
- 1999-09-06 DE DE19943688A patent/DE19943688C2/en not_active Expired - Fee Related
-
2000
- 2000-09-06 WO PCT/DE2000/003121 patent/WO2001018976A2/en not_active Application Discontinuation
- 2000-09-06 EP EP00974312A patent/EP1214798A2/en not_active Withdrawn
- 2000-09-06 AU AU12680/01A patent/AU1268001A/en not_active Abandoned
Non-Patent Citations (2)
Title |
---|
JENG S -S ET AL: "EXPERIMENTAL EVALUATION OF SMART ANTENNA SYSTEM PERFORMANCE FOR WIRELESS COMMUNICATIONS", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION,IEEE INC. NEW YORK,US, vol. 46, no. 6, 1 June 1998 (1998-06-01), pages 749 - 757, XP000766083, ISSN: 0018-926X * |
KUHWALD ET AL: "A New Optimum Constrained Beamforming-Algorithm for Future Mobile Communicaiton Systems Based on CDMA", PROC. 4TH ACTS MOBILE COMMUNICATIONS SUMMIT, June 1999 (1999-06-01), pages 963 - 968, XP000986632 * |
Also Published As
Publication number | Publication date |
---|---|
DE19943688A1 (en) | 2001-04-12 |
WO2001018976A2 (en) | 2001-03-15 |
DE19943688C2 (en) | 2001-09-13 |
AU1268001A (en) | 2001-04-10 |
EP1214798A2 (en) | 2002-06-19 |
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