Title:
DIVERSITY RECEIVER AND ITS METHOD
Document Type and Number:
Japanese Patent JP3412605
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To eliminate amplitude distortion after synthesis by arranging main wave levels to cancel inverted phase signals, so as to use only the interference wave.
SOLUTION: A correlation unit 104 takes correlation between an output of a received signal delay device 103 and a reference signal, resulting from re-modulating of the output of a demodulator 108 with a modulator 113 and sets the gain of a variable attenuator 102, on the basis of the obtained correlation value. Thus, main wave levels at inputs 1, 2 are made identical to each other, and a phase controller 111 controls an infinite phase shifter 105 to cancel the main waves with reverse phases to each other and the output of a synthesizer 106 consists of only the interference wave components, so as to suppress amplitude distortion and to the channel quality becomes satisfactory.
Inventors:
Shingo Okamoto
Kayo Tanabe
Kayo Tanabe
Application Number:
JP2000203003A
Publication Date:
June 03, 2003
Filing Date:
July 05, 2000
Export Citation:
Assignee:
NEC
International Classes:
H01Q3/26; H04B7/08; (IPC1-7): H04B7/08
Domestic Patent References:
| JP61131625A | ||||
| JP6237197A |
Attorney, Agent or Firm:
▲柳▼川 信
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