发明名称 |
TRANSMISSION APPARATUS, TRANSMISSION METHOD, AND TRANSMISSION SYSTEM |
摘要 |
<p>In order to provide a transmission device which can resolve the deterioration in transmission characteristics due to lack of the resolution of a D/A converter in a high speed and large capacity digital communication, a transmission device according to an exemplary aspect of the present invention includes an encoding unit encoding input data; an unequal-interval quantization unit quantizing an output signal from the encoding unit by a quantization level number based on a resolution of a subsequent digital-to-analog conversion unit by using an unequally spaced quantization level interval based on the output signal; the digital-to-analog conversion unit converting an output signal from the unequal-interval quantization unit into an analog signal; an output level adjustment unit adjusting an output level of the digital-to-analog conversion unit so as to compensate a difference between a predetermined initial transfer function and a transfer function of the unequal-interval quantization unit; and a modulation unit generating a transmission signal based on an output signal of the digital-to-analog conversion unit adjusted by the output level adjustment unit.</p> |
申请公布号 |
EP2733852(A4) |
申请公布日期 |
2015.03.25 |
申请号 |
EP20120812131 |
申请日期 |
2012.07.05 |
申请人 |
NEC CORPORATION |
发明人 |
ABE, JUNICHI |
分类号 |
H03M1/70;H04B10/2513;H04B10/50;H04B10/548 |
主分类号 |
H03M1/70 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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