IEEE Transactions on Communications,
vol. 68, no. 3, Mar. 2020, pp. 1951-1965, DOI 10.1109/TCOMM.2019.2963023
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, Texas USA
(2) Futurewei Technologies, Bridgewater, New Jersey USA.
(3) Futurewei Technologies, Plano, Texas USA.
Paper published at IEEE Explore
Paper draft at arXiv
Multiantenna Communications Project
For low-resolution analog-to-digital converter (ADC) systems,
only high-complexity receive antenna selection has been developed
and transmit antenna selection has been limited to a single
antenna selection in prior work.
In this paper, we propose low-complexity receive antenna
selection algorithms and analyze transmit antenna selection by
considering antenna selection at a base station with large
antenna arrays and low-resolution ADCs.
For downlink antenna selection, we show
a selection criterion with zero-forcing precoding equivalent to
a perfect quantization system;
sum rate increases with number of selected antennas;
derivation of the sum rate loss function from using a antenna
sum rate loss reaches a maximum at a point of total transmit
power and decreases beyond that point to converge to zero.
For wideband orthogonal-frequency-division-multiplexing (OFDM)
systems, our results hold when entire subcarriers share a
common subset of antennas.
For uplink antenna selection, we generalize
a greedy antenna selection criterion;
propose a quantization-aware fast antenna selection algorithm
using the criterion; and
derive a lower bound on sum rate achieved by the proposed algorithm.
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.
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