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Millimeter Waves in Single-Carrier Massive MIMO Transmissions

Creative Commons 'BY' version 4.0 license

This work presents a single-carrier transmission for the frequency selective Gaussian multi-user channel. It considers both dependent and independent channel cases and compares them in terms of the user sum-rate as well as the general performance. We developed a general expression for the achievable rate among users in the channel with a particular type of correlation. In this channel, the conventional channel matched filter does not perform as expected. We applied three different precoders to enhance the performance. Their performances are determined by simulations.

We showed the superiority of the precoders with a large number of users through simulations. By increasing the number of users in the system, the conventional pre-coders showed better performance in terms of the user sum-rates. We showed that a correlation not only between antennas but also between taps can affect the performance of the channel matched filter.

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