On the Effective Capacity of IRS assisted wireless communication

This paper provides the effective capacity (EC)analysis in futuristic intelligent reflecting surfaces (IRS) assistedwireless communication. We investigate the two widely deployedsetups for mobile wireless communication: single input singleoutput (SISO) and multi-input and single output (MISO) in thecontext of IRS for EC. We derive the distributions of SNR in bothsetups by exploiting probability theory. Further, we encounterthe two widely known assumptions on channel state information(CSI) (i.e. known/perfect CSI and no CSI at the base station(BS)) and derive EC closed form expressions in each cases. Wealso provide solution to the optimal transmission rate problemwhen no CSI available at BS to further enhance EC, in bothSISO and MISO setups. Simulation results show the relation ofEC with different system parameters i.e. power budget, numberof transmit antennas at BS and number of reflective elements at IRS.

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