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
Data center with free-space optical communications
Method and system for presenting live video from video capture devices on a computer monitor
Nanoparticles in a flash memory using chaperonin proteins
Transmission channel for ultrasound applications
Enhanced telephony services
Transferring storage devices within storage device testing systems
Printable and printed articles
  Randomly Featured Patents
Hot source having slight bulk
Christmas tree stand
Live attenuated bacteria of the species Actinobacillus pleuropneumoniae
Destructively removable barcode
Method for translating conditional expressions from a non-verilog hardware description language to verilog hardware description language while preserving structure suitable for logic synthesis
Mixtures of blue disperse monoazo dyestuffs
Anti-microbial breath freshening mouthrinse
Container for decorative grass
Region based moving image editing system and method
Trim arrangement for outboard motor