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On the Implementation of Large Intelligent Antenna Systems without Equalization

Silva, M.

On the Implementation of Large Intelligent Antenna Systems without Equalization, Proc International Conference on Antennas and Electromagnetic Systems AES, Torremolinos, Spain, Vol. , pp. - , June, 2023.

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Abstract
This paper studies Large Intelligent Systems (LIS) with different receiver types: Equal Gain Combining (EGC), Maximum Ratio Combining (MRC), Zero Forcing (ZF), and Minimum Mean Squared Error (MMSE). We consider Single Carrier with Frequency Domain Equalization (SC-FDE). It is shown that the MRC receiver is much simpler, from the computational point of view than ZF and MMSE, while performing closer to those. Moreover, the MRC avoids the need to perform equalization and, consequently, the need to make channel estimate.