发明名称 |
MODULATION SCHEME SWITCHING TYPE COMMUNICATION DEVICE AND MODULATION SCHEME SWITCHING METHOD |
摘要 |
<p>To adaptively switch a modulation mode according to an operation form of quality-priority and capacity-priority in a multi-value applicable radio device having an active/standby configuration. The comparison unit 28a compares a reception monitoring signal c1 of an active transmission line with a lower-limit threshold LS and an upper-limit threshold HS, while the comparison unit 28b compares a reception monitoring signal c2 of a standby transmission line with the lower-limit threshold and the upper-limit threshold. Then, they output their respective results to a determination unit 28c. The determination unit 28c has therein a low-level flag and a high-level flag that are set/reset based on comparison results in the comparison units 28a and 28b. Conditions for the set/reset are different depending on the operation form. The determination unit 28c determines a modulation mode based on comparison results in the comparison units 28a and 28b and the states of the low-level flags and high-level flags, and outputs modulation mode switching control information e1 and e2.</p> |
申请公布号 |
EP2234359(A1) |
申请公布日期 |
2010.09.29 |
申请号 |
EP20080871021 |
申请日期 |
2008.12.03 |
申请人 |
NEC CORPORATION |
发明人 |
HAGIWARA, TAKESHI;SOUMA, KAZUHITO |
分类号 |
H04L27/00;H04B1/74;H04L1/00 |
主分类号 |
H04L27/00 |
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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