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Two new multiple-antenna phase-gradient detection schemes for orbital angular momentum (OAM) communication systems are presented. Their bit error rate performances are obtained by means of Monte Carlo simulations. Results show that their performance is highly dependent on the circular separation among the receiver antennas. The paired-antenna phase-gradient receiver outperforms the uniformly spaced...
An initial solution based on lattice reduction (LR) and a novel stopping criterion for the tabu search (TS) detection algorithm are proposed for use in multiple input multiple output (MIMO) antenna systems. LR aided-detection is performed and its result is utilised as an initial solution to the TS algorithm, while a measure of the condition of the lattice-reduced channel is used as a criterion for...
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