发明名称 |
MOBILE COMMUNICATION SYSTEM, RECEPTION DEVICE, AND METHOD |
摘要 |
A transmitter in a mobile communication system code-multiplexes transmission symbols together with spreading codes, performs inverse Fourier transform and transmits the result from multiple transmit antennas. A receiver in the mobile communication system performs Fourier transform on signals received at multiple receive antennas, extracts signal components of individual subcarriers and estimates symbols in accordance with a QR decomposition algorithm. A unitary matrix is derived such that a product of a spreading matrix including spreading elements as its elements, a channel matrix representing radio channel states and the unitary matrix becomes a triangular matrix. A reception vector, a unitary matrix and a triangular matrix are used to estimate symbol candidates transmitted from individual transmit antennas. |
申请公布号 |
EP2267925(A1) |
申请公布日期 |
2010.12.29 |
申请号 |
EP20090726825 |
申请日期 |
2009.03.03 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
HIGUCHI, KENICHI;KAWAI, HIROYUKI |
分类号 |
H04B7/04;H04B1/707;H04J11/00;H04L25/02;H04L27/26;H04W16/28 |
主分类号 |
H04B7/04 |
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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