Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1996-11-08
1998-02-17
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
342372, H01Q 322
Patent
active
057195838
ABSTRACT:
A mobile communication system includes an antenna, a first radio transmission/reception unit, a propagation loss calculating section, an antenna gain calculating section, an antenna gain selecting section, and a first weight control circuit. The antenna has a variable directivity pattern. The first radio transmission/reception unit transmits/receives communication information to/from a distant station through a communication channel by using the antenna. The propagation loss calculating section calculates a propagation loss in a radio channel including a communication channel between the antenna and the distant station. The antenna gain calculating section calculates a minimum antenna gain value required for communication under the condition of the propagation loss calculated by the propagation loss calculating section. The antenna gain selecting section selects an antenna gain not less than the minimum antenna gain value calculated by the antenna gain calculating section. The first weight control circuit controls the directivity pattern of the antenna in a communication state on the basis of the antenna gain selected by the antenna gain selecting section.
REFERENCES:
patent: 4176356 (1979-11-01), Foster et al.
patent: 4280128 (1981-07-01), Masak
patent: 4286268 (1981-08-01), Daniel et al.
patent: 4334230 (1982-06-01), Kane
patent: 5305373 (1994-04-01), Mizumoto
patent: 5327143 (1994-07-01), Goetz et al.
F. Haber et al., "Spatial Spectrum Estimation in a Coherent Signal Environment Using an Array in Motion", IEEE Transactions on Antennas and Propagation, vol. AP-34, No. 3, Mar. 1986, pp. 301-310.
L. C. Godara et al., "Analysis of Constrained LMS Algorithm with Application to Adaptive Beamforming Using Perturbation Sequences", IEEE Trans on Antennas and Propagation, vol. AP-34, No. 3, Mar. 1986, pp. 368-379.
K. Takao et al., "Tamed Adaptive Antenna Array", IEEE Transactions on Antennas and Propagation, vol. AP-34, No. 3, Mar. 1986, pp. 388-394.
NEC Corporation
Phan Dao L.
Tarcza Thomas H.
LandOfFree
Mobile communication system which performs antenna gain control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mobile communication system which performs antenna gain control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mobile communication system which performs antenna gain control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1787508