Signal transmission method, system and device of multi-input multi-output (MIMO) system
A multi-output, multi-input technology, applied in the field of communication, can solve problems such as difficulty in meeting user fairness requirements, impact on overall system performance, and increase in information overhead, so as to reduce information overhead, improve overall performance, and reduce interference.
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[0036] In the embodiment of the present invention, during the signal transmission process, the transmitting end sequentially performs channel coding, interleaving, scrambling and constellation mapping operations on the signal; the transmitting end performs normalization on the channel gain matrix in the channel state information fed back from the receiving end. orthogonal processing, and use the channel gain matrix after the orthogonal processing to perform non-linear precoding on the signal after the constellation mapping; the transmitting end sends the non-linear precoding signal to the channel, and transmits the signal to the receiving end through the channel. During the signal receiving process, the receiving end feeds back the channel state information to the transmitting end; the receiving end receives the signal sent by the transmitting end, wherein the signal is processed by the transmitting end using the channel gain matrix in the channel state information fed back by t...
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