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In order to solve the pilot pollution problem and realize the low complexity pilot allocation in 5G massive multiple-input and multiple-output (MIMO) communication system, we propose an artificial fish swarm algorithm based pilot allocation scheme in this paper. The algorithm is an imitation of the natural fish activities. Through the search of the region related to the largest user sum rate, we can...
In this paper, we study the low complexity user-relay assignment problem in amplify-and-forward (AF) cooperative communication systems, where multiple users compete for the same group of relays. In order to reduce the great computational complexity of the exhaustive user-relay assignment algorithm which provides the best performance in multi-user multi-relay environment, we propose a suboptimal low...
Based upon an image reconstruction algorithm which has been proposed in medical imaging field, an algorithm termed as Multiply Back Projection (MBP) is firstly used in GPR imaging. This algorithm is similar to the conventional Back Projection (BP) imaging algorithm except for the additional pairing multiplication procedure. In the MBP algorithm, time delays from each synthetic aperture position to...
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