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
Press nut
PMI feedback with codebook interpolation
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
Communication device and two-dimensional communication system using the same
Stain-blocking aqueous coating composition
Dithering method and apparatus
Package for a medicinal product
  Randomly Featured Patents
Security system for preventing unauthorized removal of merchandise
Noise reduction technique for transistors and small devices utilizing an episodic agitation
Tightly coupled emulation processors
Automatic flood control ball valve
Polymerizable composition
Fuel tanks
Porous composite materials having micro and meso/macroporosity
Electrical shorting switch assembly including a last to open last to close arcing switch
Voltage surge protection device
Apparatus and method for electrically induced thrombosis