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First, signal detection and channel estimation using ICA were conducted.
We investigated signal detection and channel estimation using independent component analysis (ICA) in large-scale MIMO, where the number of both transmit and receive antennas is 10 or more for the uplink.
It was shown that signal detection and channel estimation can be performed without problems when the number of transmit antennas is set to 16.
Moreover, when the number of base station antennas is increased, the diversity effect becomes more pronounced, and the accuracy of both signal detection and channel estimation are improved.
Next, MIMO communication was performed on the downlink using the channel obtained on the uplink.
The results showed that the channel was recovered with high accuracy when the number of base station antennas was increased by using precoding during the communication.
There are three future prospects.
First, when the communication channel is known, the BER characteristics using MMSE estimation, for example, should be compared to determine the amount of SNR degradation.
The second point is to conduct simulations in an environment where the communication channel is under correlated fading.
The third point is to use different modulation schemes, such as 16QAM, 64QAM, etc.
With these three points as considerations, I intend to continue my research. |
IEEE/ICACT20230070 Slide.27
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