Evaluation of Energy Efficiency Massive MIMO OFDM Uplink Systems with Channel Quantization

This work investigates the effects of quantization on the energy efficiency of a Massive MIMO OFDM Uplink system. The case of quantization of the received signal with perfect CSI and quantized Channel is compared for different cases. It is numerically studied how the reduction of the number of bits affects the Bit Error Rate (BER), Achievable Rate (R) and Energy Efficiency (EE) as main performance factors. It is also analyzed how the quantization of channel information affects the performance. The analysis and numerical evaluation of the quantity of bits is carried out in order to achieve good performance rates.