发明名称 |
Radio communication method, radio communication system, and radio transmission apparatus |
摘要 |
A transmission apparatus according to the present invention includes: an encoding section; a modulation section; a variable-SF spreading section that performs spreading with variable SF according to control information A from a control section; an IDFT section that performs IDFT on output from the spreading section; a GI inserting section; a parallel/serial conversion section that converts output from the GI inserting section into a serial data sequence; a digital/analog conversion section; and an RF section that transmits a signal from an antenna after converting the signal to a frequency band for analog signal transmission and controlling it to an appropriate transmission power. The control section is configured to generate control information A for determining the variable SF and input the information A to the variable-SF spreading section and the RF section. In control information A, SF is varied depending on transmission power required. |
申请公布号 |
US8681688(B2) |
申请公布日期 |
2014.03.25 |
申请号 |
US20080677742 |
申请日期 |
2008.09.12 |
申请人 |
HAMAGUCHI YASUHIRO;KUBOTA MINORU;NAMBA HIDEO;TOH SHIMPEI;YOKOMAKURA KAZUNARI;SHARP KABUSHIKI KAISHA |
发明人 |
HAMAGUCHI YASUHIRO;KUBOTA MINORU;NAMBA HIDEO;TOH SHIMPEI;YOKOMAKURA KAZUNARI |
分类号 |
H04B7/185;H04B1/69;H04B1/707;H04J13/00;H04J13/20 |
主分类号 |
H04B7/185 |
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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