MX9805134A - Impairment determination for a diversity antenna selection process. - Google Patents
Impairment determination for a diversity antenna selection process.Info
- Publication number
- MX9805134A MX9805134A MX9805134A MX9805134A MX9805134A MX 9805134 A MX9805134 A MX 9805134A MX 9805134 A MX9805134 A MX 9805134A MX 9805134 A MX9805134 A MX 9805134A MX 9805134 A MX9805134 A MX 9805134A
- Authority
- MX
- Mexico
- Prior art keywords
- quality
- tests
- selection process
- impairment
- antenna
- 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
- H04B7/0802—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 antenna selection
- H04B7/0805—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 antenna selection with single receiver and antenna switching
- H04B7/0808—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 antenna selection with single receiver and antenna switching comparing all antennas before reception
- H04B7/0811—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 antenna selection with single receiver and antenna switching comparing all antennas before reception during preamble or gap period
-
- 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
- H04B7/0802—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 antenna selection
- H04B7/0805—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 antenna selection with single receiver and antenna switching
- H04B7/0808—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 antenna selection with single receiver and antenna switching comparing all antennas before reception
-
- 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
- H04B7/0802—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 antenna selection
- H04B7/0825—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 antenna selection with main and with auxiliary or diversity antennas
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
A diversity selection process which tests to determine whether poor reception is caused by co-channel interference or multipath fading is disclosed. The impairment is determined by first testing the quality over several frames. Unless the quality is poor over these several frames, the system tests for multipath fading by selecting the antenna with the greater signal strength, provided no hold condition exists. However, if poor quality has been present over the several frame period, the system selects the other antenna if its RSSI is greater. However, the system also tests the RSSI received on the current antenna and determines the impairment was co-channel interference if the signal of quality was sufficiently high. In which case a hold condition is set for a number of frames to prevent excessive switching.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2188845A CA2188845A1 (en) | 1996-10-25 | 1996-10-25 | Diversity Antenna Selection |
US08/772,669 US6118773A (en) | 1996-10-25 | 1996-12-20 | Impairment determination for a diversity antenna selection process |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9805134A true MX9805134A (en) | 1998-10-31 |
Family
ID=25678770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9805134A MX9805134A (en) | 1996-10-25 | 1998-06-24 | Impairment determination for a diversity antenna selection process. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0870371A1 (en) |
CN (1) | CN1211359A (en) |
MX (1) | MX9805134A (en) |
WO (1) | WO1998019401A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI982763A (en) * | 1998-12-21 | 2000-06-22 | Nokia Networks Oy | Procedure for data communication and radio systems |
JP2000196512A (en) * | 1998-12-25 | 2000-07-14 | Nec Mobile Commun Ltd | Diversity control circuit for mobile communication unit and diversity control method |
US7263147B2 (en) * | 2003-10-14 | 2007-08-28 | Intel Corporation | Low bit error rate antenna switch for wireless communications |
JP4462910B2 (en) * | 2003-12-04 | 2010-05-12 | 株式会社バッファロー | Wireless LAN transceiver |
CN104506221B (en) * | 2014-12-12 | 2018-11-09 | 福建星网锐捷网络有限公司 | Method of controlling antenna and antenna |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2614157B1 (en) * | 1987-04-14 | 1994-04-08 | Thomson Csf | METHOD FOR AUTOMATIC SELECTION OF A DIRECTIVE RECEIVING ANTENNA AMONG A PLURALITY OF RECEIVING ANTENNAS |
EP0989697B1 (en) * | 1993-09-30 | 2004-06-30 | Skyworks Solutions, Inc. | Multiple antenna home base for digital cordless telephones |
US5530926A (en) * | 1993-10-04 | 1996-06-25 | Motorola, Inc. | Method for operating a switched diversity RF receiver |
-
1997
- 1997-10-24 WO PCT/CA1997/000798 patent/WO1998019401A1/en not_active Application Discontinuation
- 1997-10-24 EP EP97910181A patent/EP0870371A1/en not_active Withdrawn
- 1997-10-24 CN CN 97192352 patent/CN1211359A/en active Pending
-
1998
- 1998-06-24 MX MX9805134A patent/MX9805134A/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO1998019401A1 (en) | 1998-05-07 |
CN1211359A (en) | 1999-03-17 |
EP0870371A1 (en) | 1998-10-14 |
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