Title :
Transmit energy-efficiency for long-range wireless communications from battery-powered unmanned systems
Author :
Jun Chen ; Pratt, Thomas G.
Author_Institution :
Dept. of Electr. Eng., Univ. of Notre Dame, Notre Dame, IN, USA
Abstract :
The transmit energy efficiency of long-range wireless communications from battery-powered unmanned systems over packet erasure channels is analyzed for space- and polarization-based multiple-input multiple-output (MIMO) architectures with and without linear precoding. Theoretical and emulation results generated from a hybrid hardware/software test bed indicate that when packet erasures are considered, 4 × 4 MIMO architectures with precoding can offer significant energy efficiency gains relative to nonprecoded MIMO systems. In the lower signal-to-noise ratio regime, we find that operating points exist for the different MIMO architectures that provide near maximum spectral efficiency while operating at a local minimum in energy consumption. At these operating points, transceiver operating times are determined for a range of battery capacities.
Keywords :
MIMO communication; energy conservation; linear codes; precoding; radio transceivers; wireless channels; MIMO architecture; battery-powered unmanned system; energy consumption; energy-efficiency transmission; linear precoding; long-range wireless communication; nonprecoded MIMO system; packet erasure channel; polarization-based multiple-input multiple-output architecture; signal-to-noise ratio; space-based multiple-input multiple-output architecture; transceiver; Batteries; Computer architecture; Energy consumption; MIMO; Receiving antennas; Signal to noise ratio;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2015.150106
