Title:
CONTROLLER FOR ARRAY ANTENNA
Document Type and Number:
Japanese Patent JP2719123
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lower an error rate by estimating and outputting a digital signal in a reception signal so that the distance between a signal estimated by the known state transition of the digital signal in a transmission signal and the output signal of an addition means is minimized based on the output signal of the addition means and a power weight coefficient.
SOLUTION: This controller comprises a beam forming device B1, a signal selector 4, a multiplier 5, an adder 6 and a maximum likelihood estimation device 7, etc. N-dimensional column vectors setting N reception signals as components are multiplied by corresponding weight vectors, respectively, and a direct signal and a delay signal are outputted from a beam forming means. Those output signals are multiplied and outputted by plural power weight coefficients outputted from an adaptive control means, respectively, and they are added and outputted, respectively. The distance between the signal estimated by state transition taken by the digital signal included in the transmission signal and the output signal of the addition means can be minimized based on those output signals and the plural power weight coefficients from the adaptive control means.
Inventors:
Yoshiharu Doi
Takeo Ohgane
Takeo Ohgane
Application Number:
JP18268095A
Publication Date:
February 25, 1998
Filing Date:
July 19, 1995
Export Citation:
Assignee:
ATR Optical and Radio Communications Research Institute, Inc.
International Classes:
H01Q3/26; H04B7/08; H04B7/26; (IPC1-7): H01Q3/26; H04B7/08; H04B7/26
Domestic Patent References:
| JP6164434A | ||||
| JP6196921A | ||||
| JP786972A | ||||
| JP7245526A | ||||
| JP445626A |
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)
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