Telecommunications – Receiver or analog modulated signal frequency converter – With wave collector
Patent
1997-04-07
2000-07-04
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
With wave collector
455133, 455137, H04B 700
Patent
active
060850760
ABSTRACT:
A receiver and antenna selection system located at a base station preferably comprises a plurality of radio units, each connected to its own antenna. Each radio unit receives a radio message and independently derives quality metrics based on the reception quality of the radio message, as indicated, for example, by a received signal strength indication, cyclic redundancy check result, preamble correlation magnitude, and other factors. Each radio unit transfers the quality metrics as serial data to an antenna selector. The antenna selector, simultaneously for each radio unit, converts and formats the serial data into individual data words and/or bits corresponding to the quality metrics, then applies the data words and/or bits to an antenna scoring block for determining an antenna score for each antenna. A comparison block compares the antenna scores and selects the best antenna for reception and/or transmission. In a preferred embodiment, the antenna selector weights the importance of each of the received quality metrics, such that certain parameters influence the antenna selection more than other parameters. If no antenna is clearly superior, the antenna selector may rotate the antennas each communication period until a suitable antenna is determined, so that the handset has an opportunity to listen to each of the antennas.
REFERENCES:
patent: 4797947 (1989-01-01), Labedz
patent: 4829554 (1989-05-01), Barnes et al.
patent: 5097484 (1992-03-01), Akaiwa
patent: 5200956 (1993-04-01), Pudney et al.
patent: 5202903 (1993-04-01), Okanoue
patent: 5212689 (1993-05-01), Eriksson
patent: 5241690 (1993-08-01), Larsson et al.
patent: 5280472 (1994-01-01), Gilhousen et al.
patent: 5299198 (1994-03-01), Kay et al.
patent: 5303287 (1994-04-01), Laborde
patent: 5363373 (1994-11-01), Nakahara et al.
patent: 5390342 (1995-02-01), Takayama et al.
patent: 5392459 (1995-02-01), Baba et al.
patent: 5420851 (1995-05-01), Seshadri et al.
patent: 5444696 (1995-08-01), Petranovich
patent: 5446727 (1995-08-01), Bruckert et al.
patent: 5446922 (1995-08-01), Siwiak et al.
patent: 5455822 (1995-10-01), Dixon et al.
patent: 5465271 (1995-11-01), Hladik et al.
patent: 5481533 (1996-01-01), Honig et al.
patent: 5483676 (1996-01-01), Mahany et al.
patent: 5499397 (1996-03-01), Wadin et al.
patent: 5515378 (1996-05-01), Roy, III et al.
patent: 5530926 (1996-06-01), Rozanski
patent: 5548837 (1996-08-01), Hess et al.
patent: 5561673 (1996-10-01), Takai et al.
patent: 5610940 (1997-03-01), Durrant et al.
patent: 5648992 (1997-07-01), Wright et al.
patent: 5671219 (1997-09-01), Jensen et al.
patent: 5694417 (1997-12-01), Andren et al.
patent: 5859880 (1999-01-01), Ljungberg et al.
patent: 5870681 (1999-02-01), Myer
patent: 5883921 (1999-03-01), Andren et al.
Nanda, Sanjiv et al., "Variable Partition Duplexing For Wireless Communications," IEEE, GlobeCom '91:1147-1153, 1991.
Radio Equipment and Systems (RES); Digital European Cordless Telecommunications (DECT) Common interface Part 9: Public access profile, ETS 300 175-9, Oct. 1992.
Jensen Ryan N.
Lindsay Charles L.
Moore Kenneth S.
Eisenzopf Reinhard J.
Nguyen Duc
Omnipoint Corporation
LandOfFree
Antenna diversity for wireless communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Antenna diversity for wireless communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna diversity for wireless communication system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1494499