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In this paper we investigate the achievable rate of LOS MIMO systems that use1-bit quantization and spatial oversampling at the receiver. We propose that byusing additional antennas at the receiver, the loss incurred due to the stronglimitation of the quantization can be decreased. Mutual information resultsshow that considerable rate gains can be achieved depending on the number andarrangement of the antennas. In some of the cases, even the full available ratefrom the transmitter can be attained. Furthermore, the results also reveal thattwo-dimensional antenna arrays can benefit more from spatial oversampling thanone-dimensional arrays, when using 1-bit quantization in the LOS MIMO scenario.

Spatial Oversampling in LOS MIMO Systems with 1-Bit Quantization at the Receiver