发明名称 |
Radio reception apparatus, radio reception method and radio reception program capable of switching modulation methods |
摘要 |
In a radio reception apparatus compatible with adaptive modulation, based on a received IQ signal processed by a reception processing unit, a determining unit calculates EVM that corresponds to a magnitude of shift-off between a true symbol point and the received symbol point. The calculated EVM is averaged and thereafter applied to a control unit. The control unit compares the applied EVM with a prescribed threshold value, and determines with high accuracy, switching among a plurality of modulation methods having different multi-value numbers.
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申请公布号 |
US7333566(B2) |
申请公布日期 |
2008.02.19 |
申请号 |
US20030618617 |
申请日期 |
2003.07.15 |
申请人 |
SANYO ELECTRIC CO., LTD;SANYO TELECOMMUNICATIONS CO., LTD |
发明人 |
NAKAO SEIGO;KAWAI KATSUTOSHI |
分类号 |
H03K9/00;H04L27/00;H04B1/00;H04B1/06;H04B7/26;H04L1/00;H04L27/22;H04Q7/20 |
主分类号 |
H03K9/00 |
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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