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
Pelvic registration device for medical navigation
Gyroscope utilizing torsional springs and optical sensing
System and method for enhancing buyer and seller interaction during a group-buying sale
System and method for order placement in an electronic trading environment
System, method and computer program product for efficient caching of hierarchical items
Method for assisting in the checking of transaction records, transaction device, server, mobile terminal, and corresponding computer programs
  Randomly Featured Patents
Demonstration device
Band saw attachment for multipurpose power tool
Textile slasher lubricating apparatus
Regenerative vehicle launch
Roll stability control system for an automotive vehicle using an external environmental sensing system
Magnetic sensor
Plants having increase yield and method for making the same
Scoreline pattern for a golf club head
Liquid crystal cell for a liquid crystal display screen
Photopolymerizable composition containing 3,6-diaminofluoran compounds