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
Method for installing industrial components in an environment
Support member, rotation device comprising such a support and rolling bearing assembly including such a detection device
Using storage cells to perform computation
Amplitude-shift-keying (ASK) envelope detector and demodulation circuits
Optoelectronic component and method for producing an optoelectronic component
Multistable electromagnetic actuators
Variants of a family 44 xyloglucanase
  Randomly Featured Patents
Method and device for stabilizing slit fluid jet
Weight compression/decompression system
Optical valvulotome
Compression latch for dirt cup
Apparatus and method for microfabricated multi-dimensional sensors and sensing systems
High swing interface output stage integrated circuit for interfacing a device with a data bus
Protective ear covering device
Single and multiple radiation transparent afterglow electric discharge detector systems
Double-balanced modulating and demodulating apparatus
Packaging for food products