IEEE Transactions on Communications,
submitted on June 25, 2019.
Base Station Antenna Selection for Low-Resolution ADC Systems
Jinseok Choi (1),
Junmo Sung (1),
Narayan Prasad (2),
Xiao-Feng Qi (2),
Brian L. Evans (1), and
Alan Gatherer (3)
(1) Department of Electrical and Computer Engineering,
Wireless Networking and Communications Group,
The University of Texas at Austin,
Austin, TX 78712 USA
(2) Futurewei Technologies, Bridgewater, New Jersey USA.
(3) Futurewei Technologies, Plano, Texas USA.
Paper Draft (on arXiv)
Multiantenna Communications Project
This paper investigates antenna selection at a base station with large
antenna arrays and low-resolution analog-to-digital converters.
For downlink transmit antenna selection for narrowband channels, we show
For wideband OFDM systems, our results hold when entire subcarriers
share a common subset of antennas.
For uplink receive antenna selection for narrowband channels, we
- a selection criterion that maximizes sum rate with zero-forcing
precoding equivalent to that of a perfect quantization system;
- maximum sum rate increases with number of selected antennas;
- derivation of the sum rate loss function from using a subset of
- unlike high-resolution converter systems, sum rate loss reaches a
maximum at point of total transmit power and decreases beyond that
point to converge to zero.
For wideband OFDM systems, we extend our algorithm and derive a lower
bound on its sum rate.
Simulation results validate theoretical analyses and show increases in
sum rate over conventional algorithms.
- generalize a greedy antenna selection criterion to capture
tradeoffs between channel gain and quantization error;
- propose a quantization-aware fast antenna selection algorithm
using the criterion; and
- derive a lower bound on sum rate achieved by the proposed algorithm
based on submodular functions.
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