CA2273029A1 - Communication station with multiple antennas - Google Patents
Communication station with multiple antennas Download PDFInfo
- Publication number
- CA2273029A1 CA2273029A1 CA002273029A CA2273029A CA2273029A1 CA 2273029 A1 CA2273029 A1 CA 2273029A1 CA 002273029 A CA002273029 A CA 002273029A CA 2273029 A CA2273029 A CA 2273029A CA 2273029 A1 CA2273029 A1 CA 2273029A1
- Authority
- CA
- Canada
- Prior art keywords
- antenna system
- transmitter
- receiver
- processing equipment
- signal processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- H04B7/0891—Space-time diversity
- H04B7/0894—Space-time diversity using different delays between antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
Abstract
The present invention relates to communications for communication systems. The communication includes an antenna system which is coupled to an RF
receiver/transmitter which in tum is coupled to other signal processing equipment including at least one modem for processing individual CDMA communications.
Preferably the antenna system includes multiple antennas and delay units and outputs a combined signal having a known distortion imparted by the antenna system. The combined signal is in turn processed by the modem. The modem compensates for the known distortion in a manner which provides improved signal gain. The improved signal gain permits a reduction in transmit power and, accordingly, increased capacity of the CDMA system.
Where the antenna system is to be remotely located from the signal processing equipment, separate units for the RF
receiver/transmitter and the other signal processing equipment are provided so that the RF receiver/transmitter may also be remotely located along with the antenna system.
Preferably a connecting cable of at least 20 feet is provided which supplies RF signals and DC power to the RF receiver/transmitter from the other signal processing equipment.
receiver/transmitter which in tum is coupled to other signal processing equipment including at least one modem for processing individual CDMA communications.
Preferably the antenna system includes multiple antennas and delay units and outputs a combined signal having a known distortion imparted by the antenna system. The combined signal is in turn processed by the modem. The modem compensates for the known distortion in a manner which provides improved signal gain. The improved signal gain permits a reduction in transmit power and, accordingly, increased capacity of the CDMA system.
Where the antenna system is to be remotely located from the signal processing equipment, separate units for the RF
receiver/transmitter and the other signal processing equipment are provided so that the RF receiver/transmitter may also be remotely located along with the antenna system.
Preferably a connecting cable of at least 20 feet is provided which supplies RF signals and DC power to the RF receiver/transmitter from the other signal processing equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002561782A CA2561782A1 (en) | 1997-10-31 | 1998-05-26 | Communication station with multiple antennas |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/961,482 US6259687B1 (en) | 1997-10-31 | 1997-10-31 | Communication station with multiple antennas |
US08/961,482 | 1997-10-31 | ||
PCT/US1998/010602 WO1999023767A1 (en) | 1997-10-31 | 1998-05-26 | Communication station with multiple antennas |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002561782A Division CA2561782A1 (en) | 1997-10-31 | 1998-05-26 | Communication station with multiple antennas |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2273029A1 true CA2273029A1 (en) | 1999-05-14 |
CA2273029C CA2273029C (en) | 2007-01-09 |
Family
ID=25504528
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002273029A Expired - Fee Related CA2273029C (en) | 1997-10-31 | 1998-05-26 | Communication station with multiple antennas |
CA002561782A Abandoned CA2561782A1 (en) | 1997-10-31 | 1998-05-26 | Communication station with multiple antennas |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002561782A Abandoned CA2561782A1 (en) | 1997-10-31 | 1998-05-26 | Communication station with multiple antennas |
Country Status (10)
Country | Link |
---|---|
US (8) | US6259687B1 (en) |
EP (1) | EP0970571A1 (en) |
JP (3) | JP2001508603A (en) |
KR (6) | KR100722214B1 (en) |
CN (2) | CN1155166C (en) |
AU (1) | AU7595198A (en) |
CA (2) | CA2273029C (en) |
DE (1) | DE970571T1 (en) |
ES (1) | ES2139558T1 (en) |
WO (1) | WO1999023767A1 (en) |
Families Citing this family (78)
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US6278726B1 (en) | 1999-09-10 | 2001-08-21 | Interdigital Technology Corporation | Interference cancellation in a spread spectrum communication system |
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-
1997
- 1997-10-31 US US08/961,482 patent/US6259687B1/en not_active Expired - Lifetime
-
1998
- 1998-05-26 DE DE0970571T patent/DE970571T1/en active Pending
- 1998-05-26 AU AU75951/98A patent/AU7595198A/en not_active Abandoned
- 1998-05-26 KR KR1020057023653A patent/KR100722214B1/en not_active IP Right Cessation
- 1998-05-26 KR KR1019997005774A patent/KR100599137B1/en not_active IP Right Cessation
- 1998-05-26 KR KR1020077007313A patent/KR100830484B1/en not_active IP Right Cessation
- 1998-05-26 WO PCT/US1998/010602 patent/WO1999023767A1/en not_active Application Discontinuation
- 1998-05-26 ES ES98923728T patent/ES2139558T1/en active Pending
- 1998-05-26 JP JP50737598A patent/JP2001508603A/en active Pending
- 1998-05-26 CN CNB98801565XA patent/CN1155166C/en not_active Expired - Fee Related
- 1998-05-26 CN CNB2004100368575A patent/CN1320786C/en not_active Expired - Fee Related
- 1998-05-26 KR KR1020067014735A patent/KR100722215B1/en not_active IP Right Cessation
- 1998-05-26 CA CA002273029A patent/CA2273029C/en not_active Expired - Fee Related
- 1998-05-26 EP EP98923728A patent/EP0970571A1/en not_active Withdrawn
- 1998-05-26 KR KR1020077021538A patent/KR20070106639A/en not_active Application Discontinuation
- 1998-05-26 KR KR1020077005023A patent/KR100797502B1/en not_active IP Right Cessation
- 1998-05-26 CA CA002561782A patent/CA2561782A1/en not_active Abandoned
-
2001
- 2001-05-14 US US09/854,725 patent/US6418135B1/en not_active Expired - Lifetime
-
2002
- 2002-02-11 US US10/073,545 patent/US6452918B1/en not_active Expired - Lifetime
- 2002-02-11 US US10/073,797 patent/US6466567B2/en not_active Expired - Lifetime
- 2002-10-15 US US10/271,400 patent/US6584091B2/en not_active Expired - Fee Related
-
2003
- 2003-04-16 US US10/417,384 patent/US7050418B2/en not_active Expired - Fee Related
-
2004
- 2004-02-09 US US10/775,573 patent/US7145893B2/en not_active Expired - Fee Related
-
2005
- 2005-09-30 JP JP2005288458A patent/JP2006042390A/en not_active Withdrawn
-
2006
- 2006-12-01 US US11/607,484 patent/US20070091865A1/en not_active Abandoned
-
2007
- 2007-10-19 JP JP2007273054A patent/JP2008048460A/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20160526 |
|
MKLA | Lapsed |
Effective date: 20160526 |