| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio signal separation method capable of performing downsizing, weight saving, reduction in delay in process and power consumption, in a radio communication device which performs radio communication by a MIMO system. SOLUTION: The order of signal detection is determined with respect to T pieces of elements in a signal vector s which is transmitted by a radio transmission apparatus. An extension propagation path matrix H' is calculated on the basis of a propagation path matrix H, a factorα, and a unit matrix I as rearranged according to an order list S, and a matrix H" is calculated. The matrix H" is subjected to QR resolution, and a unitary matrix Q and a triangular matrix R are calculated. Then a receiving vector x is filtered by using complex conjugate transpose of a row R of the matrix Q. T pieces of transmission signals are detected in sequence by using the triangular matrix R, are rearranged in the original transmitted spatial order according to the order list, and are output. COPYRIGHT: (C)2008,JPO&INPIT
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