RT Journal Article
T1 Full-duplex mmWave MIMO with finite-resolution phase shifters
A1 López Valcarce, Roberto
A1 Martinez Cotelo, Marcos
K1 1299 Otras Especialidades Matemáticas
AB Enabling simultaneous transmission and reception on the same carrier frequency, i.e., full-duplex (FD) communication, critically requires that the self-interference (SI) be sufficiently suppressed. We investigate the design of precoders and combiners for an FD millimeter wave point-to-point bidirectional link, where dense antenna arrays provide an opportunity for SI suppression via beamforming cancellation. In practice the precoders and combiners are usually implemented in a hybrid digital/analog fashion with a reduced number of radio frequency (RF) chains, and it becomes necessary to overcome a number of limitations imposed by this structure. We focus on a hybrid architecture with a phase shifter-based fully-connected analog stage, assuming finite-resolution phase shifters. To avoid analog-to-digital converter saturation at the receiver, the proposed design aims at cancelling SI at the analog combiner output. Although accurate SI suppression is difficult with low-resolution phase shifters, our design is able to provide reasonable performance, significantly improving upon previous approaches, and allowing to efficiently exploit the availability of RF chains to partially compensate for coarse phase quantization effects.
PB IEEE Transactions on Wireless Communications
SN 15361276
YR 2022
FD 2022-11
LK http://hdl.handle.net/11093/4369
UL http://hdl.handle.net/11093/4369
LA eng
NO IEEE Transactions on Wireless Communications, 21(11): 8979-8994 (2022)
NO Agencia Estatal de Investigacion Spain | Ref. PID2019-105717RB-C21
DS Investigo
RD 13-dic-2024