Polar coded MIMO wireless EEG system

Low capacity, bulky size and wiring limitations of the conventional wireless multi-channel electroencephalography (EEG) system restrict its use as brain neuromonitoring system. To reduce such restriction, this paper proposes an EEG system based on multi-input multi-output (MIMO) technique and polar coded data. In the proposed system, all the channels are sent and received simultaneously, while the frozen bits of polar codes are used for antenna switching. The results show that a location of the switching code at the noisy frozen bits reduces the performance of the proposed system especially in the case of low signal to noise ratio. To improve the system performance, this work suggests a method to encode the data transmitted through the frozen bits.