发明名称 |
Mobile communication system, receiver 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 and a channel matrix representing radio channel states is equal to a product of the unitary matrix and 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 |
US8391128(B2) |
申请公布日期 |
2013.03.05 |
申请号 |
US20090936270 |
申请日期 |
2009.03.03 |
申请人 |
HIGUCHI KENICHI;KAWAI HIROYUKI;NTT DOCOMO, INC. |
发明人 |
HIGUCHI KENICHI;KAWAI HIROYUKI |
分类号 |
H04J11/00;H04B1/707;H04B7/216;H04K1/10;H04W4/00 |
主分类号 |
H04J11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|