IEEE Transactions on Vehicular Technology,
vol. 68, no. 1, Jan. 2019, pp. 952-956, DOI 10.1109/TVT.2018.2878645.
Analysis of Ergodic Rate for Transmit Antenna Selection in Low-Resolution ADC Systems
Jinseok Choi and
Brian L. Evans
Department of Electrical and Computer Engineering,
Wireless Networking and Communications Group,
The University of Texas at Austin,
Austin, TX 78712 USA
Paper available on
Related conference paper:
"Antenna Selection for Large-Scale MIMO Systems with Low-Resolution ADCs" (2018)
Multiantenna Communications Project
In this paper, we analyze the ergodic rate of single transmit antenna
selection (TAS) in low-resolution analog-to-digital converter (ADC) systems.
Using low-resolution ADCs is a potential power-reduction solution for multiple
Low-resolution ADC systems with TAS can further reduce cost and power
consumption in wireless transceivers.
Considering such systems, we derive the approximated lower bound of ergodic
rate with TAS.
Here, we exploit the approximated distribution of the sum of Weibull random
variables to address the challenge involved in analyzing the quantization
We, then, derive the approximated ergodic rate with TAS for a single receive
antenna in closed form, which reveals the TAS gain in low-resolution ADC
The upper bound of a single transmit and single receive antenna system under
coarse quantization is derived to compare with the ergodic rate of the
The analysis shows that the TAS method achieves a large improvement in
ergodic rate with a moderate number of transmit antennas.
Simulation results validate the derived ergodic rates and resulting intuition.
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