发明名称 |
Radio transmission system and method, and transmitter apparatus and receiver apparatus used in the radio transmission system |
摘要 |
A radio transmission system is configured to, on the occasion of radio transmission of information between a transmitter and a receiver, perform the radio transmission of information using an orthogonal frequency and code division multiplexing transmission scheme of parallelly transmitting identical information by a plurality of sub-carriers. The radio transmission system has a spreading factor variable control transmitting device for parallelly converting information channel-coded at the transmitter, according to symbols transmitted simultaneously, and for spreading a sequence of parallelized symbols in at least one of a frequency direction and a time direction by a spreading code sequence of a designated spreading factor. |
申请公布号 |
US2003053413(A1) |
申请公布日期 |
2003.03.20 |
申请号 |
US20020231284 |
申请日期 |
2002.08.30 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
SAWAHASHI MAMORU;ATARASHI HIROYUKI;ABETA SADAYUKI;MAEDA NORIYUKI |
分类号 |
H04B1/69;H04B1/707;H04J11/00;H04L1/00;H04L5/02;(IPC1-7):H04J11/00 |
主分类号 |
H04B1/69 |
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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