Transmit and Receive Antenna Port Selection for Channel Capacity Maximization in Fluid-MIMO Systems
Christos N. Efrem, Ioannis Krikidis
Abstract
In this letter, we study a discrete optimization problem, namely, the maximization of channel capacity in fluid multiple-input multiple-output (fluid-MIMO) systems through the selection of antenna ports/positions at both the transmitter and the receiver. First, we present a new joint convex relaxation (JCR) problem by using an upper bound on the channel capacity and exploiting the binary nature of optimization variables. Then, we develop and analyze two optimization algorithms with different performance-complexity tradeoffs. The first algorithm is based on JCR and reduced exhaustive search (JCR&RES), while the second on JCR and alternating optimization (JCR&AO).
Topics & Concepts
MIMOComputer scienceChannel capacityAntenna (radio)3G MIMOSelection (genetic algorithm)Channel (broadcasting)MaximizationPrecodingTelecommunicationsPort (circuit theory)Multi-user MIMOComputer networkElectronic engineeringMathematical optimizationMathematicsEngineeringArtificial intelligenceEnergy Harvesting in Wireless NetworksAntenna Design and AnalysisAdvanced MIMO Systems Optimization