Resources Contact Us Home
Adaptive antenna control method and adaptive antenna transmission/reception characteristic control method

Image Number 7 for United States Patent #7302232.

An adaptive antenna control method is used for a radio communication system built by a plurality of radio base stations and a plurality of terminal stations capable of communicating with the radio base stations. Each radio base station includes an adaptive antenna having a plurality of antenna elements, a distributor for generating signals to be input to the plurality of antenna elements by branching a signal of one system to be transmitted, and weighting circuits for respectively weighting transmission signals to the plurality of antenna elements. For reception by each terminal station, an interference wave power given by the transmission signal from each of the plurality of radio base stations is estimated. A weight in the adaptive antenna of each radio base station is determined to minimize a sum of square errors between reception signals and desired signals for all the radio base stations which simultaneously use the same communication channel. An adaptive antenna transmission/reception characteristic control method is also disclosed.

  Recently Added Patents
Rotating sunlight/light beam for fractional/beneficial use
Method and system for electronic distribution of product redemption coupons
System, method and apparatus for pausing multi-channel broadcasts
Spectral sensor for checking documents of value
Stereoscopic display
High order continuous time filter
Conductor for transmitting electrical power
  Randomly Featured Patents
Plasma display panel having reduced addressing time and increased sustaining discharge time
Method and apparatus for automatic database encryption
Process and system for flattening secondary edgebeads on resist coated wafers
Method of manufacturing a conductive layer on a substrate
(Di)alkoxycarbonylamino-s-triazine derivatives and the use thereof against pests which are parasites of domestic animals and cultivated plants
Microwave coffee brewer and travel mug
Cosmetic container with color chip
Carton and integral handle therefor
Sequencer module for a pulse width modulation driver
Transparent aqueous organopolysiloxane compositions