送信装置及び受信装置

Japanese Patent JP6539210

B2

A modulator, demodulator, transmission device, and reception device for digital data that have excellent resistance to noise are provided. A modulator according to one aspect of this disclosure includes a modulation mapper (15) that performs 16APSK mapping at a radius ratio of 2.87 when the LDPC code rate is 93/120. A modulator according to another aspect of this disclosure includes a modulation mapper (15) that performs 32APSK mapping at a second inner circle to first inner circle radius ratio of 2.87 and an outer circle to first inner circle radius ratio of 5.33 when the LDPC code rate is 93/120. The modulator is included in a transmission device (1) according to this disclosure. A demodulator according to this disclosure includes a quadrature detector (21) that performs demodulation corresponding to the modulator. The demodulator is included in a reception device (2) according to this disclosure.

JP6798004	Methods and systems for coding and decoding LDPC codes
JP2012080266	DECODER, MEASURING APPARATUS, DECODING METHOD, MEASURING METHOD
JP5668129	Coding method

Yoichi Suzuki
Hashimoto clearly
Shoji Tanaka
Kenichi Tsuchida
Takeshi Kimura
Matsu saki honbun

JP2015547646A

July 03, 2019

November 13, 2014

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Japan Broadcasting Corporation

H03M13/19; H03M13/27; H04L27/00; H04L27/34

JP2009081821A
JP2012049734A

社団法人電波産業会,高度広帯域衛星デジタル放送の伝送方式,ARIB STD-B44 Ver1.0,日本,2009年 7月29日,Pages 36-39
鈴木陽一、松崎敬文、橋本明記、土田健一、田中祥次、木村武史,SHV衛星放送実現に向けたLDPC符号設計に関する検討,2014年電子情報通信学会総合大会講演論文集,電子情報通信学会,2014年 3月 4日,通信1,p.306
鈴木陽一、土田健一、松崎敬文、橋本明記、田中祥次、池田哲臣、奥村直司,「超高精細度テレビジョン放送のための衛星デジタル放送の伝送方式」ARIB実証実験,映像情報メディア学会技術報告,日本,映像情報メディア学会,2014年 2月28日,Vol.38,pp.33-38

Kenji Sugimura
Makoto Fukuo

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