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
Reception system including a mechanism countering pulsed interference
Optical angular position detection apparatus and method
Plural component proportioner
Method and composition for attracting arthropods by volatizing an acid
Scale information for drawing annotations
Cover opening and closing unit and image forming apparatus including the same
Bioactive agent-loaded heart-targeting nanoparticles
  Randomly Featured Patents
Ski or snowboard with means for influencing its cross-sectional shape
Flip-flop controlled clock gating system
Diving board
Sulfonylalkanoylamino hydroxyethylamino sulfonamide retroviral protease inhibitors
Remote actuator for metal detector discriminating adjust switch
Method and apparatus for inspecting a length of material
Balancing loads among computing nodes where no task distributor servers all nodes and at least one node is served by two or more task distributors
Humane sacrificer
Jigsaw message pads
Seed planter