发明名称 |
COMMUNICATION APPARATUS USING A PLURALITY OF MODULATION SCHEMES AND TRANSMISSION APPARATUS COMPOSING SUCH COMMUNICATION APPARATUS |
摘要 |
PROBLEM TO BE SOLVED: To provide a communication apparatus suitable for a case in which a plurality of kinds of communication apparatuses with different specifications of transmission power exist in a communication system using a plurality of modulation schemes. SOLUTION: A first signal generation section 11 generates a baseband modulation signal for an ASK modulation scheme from transmission data. A second signal generation section 12 generates baseband modulation signals for a non-ASK modulation scheme from the transmission data. When performing non-ASK modulation, a switch 15 connects between an input terminal d and an output terminal and outputs the baseband modulation signals based on the non-ASK modulation. When performing ASK modulation such that the transmission power ratio of the ASK modulation scheme to the non-ASK modulation scheme is a factor of 1, a switch 14 connects between an input terminal b and an output terminal and the switch 15 connects between an input terminal c and the output terminal. When performing ASK modulation such that the transmission power ratio is a actor of 2, the switch 14 connects between an input terminal (a) and the output terminal and the switch 15 connects between the input terminal c and the output terminal. COPYRIGHT: (C)2006,JPO&NCIPI
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申请公布号 |
JP2005278162(A) |
申请公布日期 |
2005.10.06 |
申请号 |
JP20050048991 |
申请日期 |
2005.02.24 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
TANAKA KOICHIRO;TAKAI HITOSHI;MORI KENICHI |
分类号 |
H04L27/20;H04B1/04;H04L1/00;H04L1/20;H04L27/00;H04L27/04;(IPC1-7):H04L27/20 |
主分类号 |
H04L27/20 |
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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