COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND SIGNAL DIVISION CIRCUIT

Japanese Patent JP2017204775

A

PROBLEM TO BE SOLVED: To divide a signal at any symbol rate while restraining increase in circuit scale and to generate a sub-modulation signal with any bandwidth.SOLUTION: A transmission device is configured to set frequency resolution of a filter coefficient generation circuit of a division filter to generate a sub-modulation signal so that it is smaller than frequency resolution of a DFT, and to divide a modulation signal by a division filter only using a filter coefficient selected at a frequency interval corresponding to the frequency resolution of the DFT among filter coefficients generated by the filter coefficient generation circuit. A reception device is configured to set frequency resolution of a filter coefficient generation circuit of an extraction filter to extract the sub-modulation signal so that it is smaller than the frequency resolution of the DFT, and to extract the sub-modulation signal by an extraction filter only using a filter coefficient selected at the frequency interval corresponding to the frequency resolution of the DFT among filter coefficients generated by the filter coefficient generation circuit.SELECTED DRAWING: Figure 1

ABE JUNICHI
GOTO DAISUKE
YAMASHITA FUMIHIRO
KOBAYASHI KIYOSHI
NAKAGAWA TADAO

JP2016096289A

November 16, 2017

May 12, 2016

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NIPPON TELEGRAPH & TELEPHONE

H04L27/26; H04B1/04; H04B1/16

JP2014093641A	2014-05-19
JP2015095796A	2015-05-18

阿部順一　他: "スペクトラム分解伝送におけるマルチプルアクセス対応受信フィルタバンクの提案", 電子情報通信学会２０１４年総合大会講演論文集 通信１, JPN6019008003, 4 March 2014 (2014-03-04), pages 3 - 1
阿部順一　他: "帯域分散アダプタによる既存衛星局の周波数利用効率の向上", 電子情報通信学会２０１１年総合大会講演論文集 通信１, JPN6019008004, 28 February 2011 (2011-02-28), pages 2 - 8

Furuya Fumio
Takeshi Ohashi
Yoshio Kawada

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