Abstract
In this paper, the effective capacity of transmit antenna selection-maximal ratio combining (TAS-MRC) systems is studied. By considering constant power allocation, a closed-form expression for the effective capacity is derived. While for variable power allocation, restricted by the average power, optimal power allocation scheme and associated effective capacity is given. Adaptive modulation is used for both constant and variable power allocation, and the superiority of variable power allocation versus constant power allocation is demonstrated by the computer simulations.
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