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The use of low resolution Analog to Digital Converters (ADCs) cansignificantly reduce the power consumption for massive Multiple Input MultipleOutput (MIMO) systems. The existing literature on quantized massive MIMOsystems deals with Cyclic Prefix (CP) transmission schemes infrequency-selective fading channels. In this paper, we propose a blockprocessing Frequency Domain Equalization (FDE) technique in CP-freetransmission schemes for massive MIMO systems having low resolution ADCs. Theoptimal block length for FDE is found by minimizing a computational complexitycost function and taking quantization distortion, channel impulse response andthe number of transmit and receiver antennas into account. Through numericalsimulation, it is shown that the optimal block length also guarantees goodperformance in terms of the Mean Square Error (MSE) and Bit Error-Rate (BER)criterion.

Efficient Equalization Method for Cyclic Prefix-Free Coarsely Quantized Massive MIMO Systems