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
Micromachined devices and fabricating the same
Drugs for prophylaxis or mitigation of taxane-induced neurotoxicity
Oxidative coupling of hydrocarbons as heat source
Using interrupted through-silicon-vias in integrated circuits adapted for stacking
Method and apparatus for a cryptographically assisted commercial network system designed to facilitate buyer-driven conditional purchase offers
Power-on reset circuit
Process for making diethyl ether from acetic acid
  Randomly Featured Patents
Method for regulating combustion processes, particularly for the production of cement in a rotary kiln
Polyester fiber with improved abrasion resistance
Method for calibrating the power output of a mobile device
Dual-slope brightness control for transflective displays
Lubricant applicator, image forming apparatus, and process cartridge
Compositions and methods for imparting stain resistance
Signal generator for circular pattern knitting machines
Telecommunications system, base station thereof and telecommunications method
X-ray examination apparatus that is convertible among multiple examination configurations
Ink ribbon cartridge having projections extending from connecting members