Abstract: This study investigates subarray-level movable antenna (MA) architecture for multi-user MIMO (MU-MIMO) systems. Unlike conventional systems with fixed-position antennas (FPAs), the proposed ...
Abstract: The concept of the frequency diverse reconfigurable intelligent surface (FD-RIS) technology has been introduced, which can enable simultaneous implementation of distance-angle beamforming in ...
# Given an array of integers nums and an integer k, # return the total number of continuous subarrays whose sum equals k. # - Instead of checking all subarrays (O(n^2)), we use prefix sums. # - If ...
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