Iterative MMSE soft detection method based on spatial modulation system having frequency offset
A technology of spatial modulation and soft detection, applied in the field of MIMO technology, can solve problems such as the inability to completely eliminate interference system performance
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[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0033] In order to describe the present invention better, the terms used in the technical solution of the present invention and the transmitter structure of the spatial modulation system are introduced first.
[0034] Spatial modulation: eg figure 1 , b is the bit data that needs to be transmitted, and can be regarded as a matrix of L×T, wherein L=log2(M)+log2(Mary) is the number of bits carried by an SM modulation symbol, and Mary is the quadrature amplitude modulation ( Quadrature Amplitude Modulation, QAM) order. It can be seen that the number of bits that can be carried by one SM modulation symbol is jointly determined by the QAM modulation order and the number of transmit antennas. The SM modulation criterion is to convert b into an M×T matrix x according to the SM conversion table. In x, one column represents the data sent at one time, and any column...
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