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If each element of Equation 1 is a matrix, the channel matrix can be represented by Equation 3 above.
The black letters are represented as known signals and the red letters as unknown signals.
In this study, since the transmitted signal x and the received signal s are known signals, the channel matrix H is obtained from s and x.
This is used as an application of the MIMO detection problem to detect the transmit signal from the known received signal and the channel matrix, and the research to find the channel matrix and the transmit signal with high accuracy with low computational complexity has been going on for a long time and until now. |
IEEE/ICACT20230070 Slide.04
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