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公开(公告)号:EP2192586B1
公开(公告)日:2013-06-05
申请号:EP09172770.1
申请日:2009-10-12
发明人: Nagai, Yuji , Noda, Chosaku , Watabe, Kazuo , Ogawa, Akihito , Kuroda, Kazuto , Yoshida, Nobuhisa , Naito, Nobumasa , Morishita, Naoki , Nakamura, Naomasa , Ohsawa, Hideaki , Sato, Hiroharu , Yamada, Hisashi , Kaneshige, Toshihiko
CPC分类号: G11B20/14 , G11B20/0021 , G11B20/00579 , G11B20/00884 , G11B20/1426 , G11B2020/1457
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公开(公告)号:EP2192586A1
公开(公告)日:2010-06-02
申请号:EP09172770.1
申请日:2009-10-12
发明人: Nagai, Yuji , Noda, Chosaku , Watabe, Kazuo , Ogawa, Akihito , Kuroda, Kazuto , Yoshida, Nobuhisa , Naito, Nobumasa , Morishita, Naoki , Nakamura, Naomasa , Ohsawa, Hideaki , Sato, Hiroharu , Yamada, Hisashi , Kaneshige, Toshihiko
CPC分类号: G11B20/14 , G11B20/0021 , G11B20/00579 , G11B20/00884 , G11B20/1426 , G11B2020/1457
摘要: According to one embodiment, a first encoder (12) encodes main information, a second encoder (22) encodes sub-information, a first modulator (62) modulates a carrier based on an output of the first encoder, a duplicating module (104) duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator (64) amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator (64) amplitude-modulates with σ/(µ×(2 N ) 1/2 ) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ 2 , a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A - B is µ.
摘要翻译: 根据一个实施例,第一编码器(12)对主信息进行编码,第二编码器(22)编码子信息,第一调制器(62)基于第一编码器的输出调制载波,复制模块(104) 复制第二编码器的输出以生成编码的子信息单元,并且第二调制器(64)基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器(64)用×(μ×(2N)1/2)进行幅度调制,为0.4或更小,其中传输路径或存储介质的噪声功率为2,编码子数 信息单位为N,对应于编码子信息单元的位1和位0的振幅调制后的信号电平为A和B,电平差A-B为μ。
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