METHOD AND EQUIPMENT FOR COMMUNICATION

Japanese Patent JP3658859

B2

PROBLEM TO BE SOLVED: To satisfactorily control a communication state by effectively preventing signal interference between respective users by adding prescribed control data previously stored in a storage means to transmission data, to which prescribed transmission processing is performed, and transmitting these data to a 2nd station.
SOLUTION: An antenna 11 for transmission and reception is connected to an antenna multicoupler 12 and on the received signal output side of the antenna multicoupler 12, a band pass filter 13, reception amplifier 14 and mixer 15 are serially connected, Frequency signals outputted from a frequency synthesizer 31 are mixed by the mixer 15 and a received signal is converted to an intermediate frequency (IF) signal. The IF signal outputted from the mixer 15 is supplied through a band pass filter 16 and a variable gain amplifier 17 to two mixers 18I and 18Q for demodulation. Frequency signals outputted from a frequency synthesizer 34 are turned to the signals of two systems of which the phases are shifted 90° by a phase shifter 35, supplied to the mixers 18I and 18Q and mixed with the IF signal later, and the I component and Q component in the received data are extracted.

JP3706108	PILOT VECTOR CORRELATOR FOR SPREAD SPECTRUM COMMUNICATION
JP3752673	ULTRA WIDE BAND TRANSMITTER AND RECEIVER
JPH05227125	COMMUNICATION EQUIPMENT OF SPREAD SPECTRUM SYSTEM

Suzuki Mihiro

JP13243596A

June 08, 2005

May 27, 1996

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ソニー株式会社

H04J13/00; H04B1/715; H04B7/005; H04B7/216; H04B7/26; H04J1/00; H04J11/00; H04L27/26; H04W52/04; H04W72/04; H04W88/02; H04L1/00; (IPC1-7): H04B7/26; H04B7/216; H04J13/04

JP8037515A
JP7023068A
JP7141757A
JP7079258A
JP7221809A
JP62169554A

Yoshitsuno Kakuda
Hironobu Isoyama
Hidemori Matsukuma

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