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1. (WO2017057045) RECEPTION DEVICE AND METHOD, TRANSMISSION DEVICE AND METHOD, AND COMMUNICATION SYSTEM

Pub. No.:    WO/2017/057045    International Application No.:    PCT/JP2016/077401
Publication Date: Fri Apr 07 01:59:59 CEST 2017 International Filing Date: Sat Sep 17 01:59:59 CEST 2016
IPC: H04B 13/00
H04B 1/10
H04B 5/02
H04B 15/00
Applicants: SONY CORPORATION
ソニー株式会社
Inventors: UNO Masahiro
宇野 雅博
TANAKA Katsuyuki
田中 勝之
KONDO Fumitaka
近藤 史隆
TANAKA Masayuki
田中 正幸
Title: RECEPTION DEVICE AND METHOD, TRANSMISSION DEVICE AND METHOD, AND COMMUNICATION SYSTEM
Abstract:
The present disclosure relates to a reception device and method, a transmission device and method, and a communication system, with which pulse-like noise can be reduced. A signal x(n) from one reception electrode is input to a variable gain amplifier and an amplitude control circuit. The variable gain amplifier amplifies the signal x(n) from the one reception electrode and outputs an amplified signal y(n) to a differential amplifier. Upon receiving an input of a signal d(n) from the other of the reception electrodes and the signal y(n) from the variable gain amplifier, the differential amplifier outputs a differential signal e(n). By using the signal x(n) from the one reception electrode and an amplitude of the output signal from the differential amplifier, the amplitude control circuit controls an input amplitude in accordance with an algorithm for setting a gain w(n) of the variable gain amplifier. The present disclosure can be applied, for example, to an electric-field communication in which communication is performed by means of changes in the ambient electric field when air or a human body is used as a transmission medium.