Optimal Coordinated Beamforming in the Multicell Downlink with Transceiver Impairments

Abstract

Physical wireless transceivers suffer from a variety of impairments that distort the transmitted and received signals. Their degrading impact is particularly evident in modern systems with multiuser transmission, high transmit power, and low-cost devices, but their existence is routinely ignored in the optimization literature for multicell transmission. This paper provides a detailed analysis of coordinated beamforming in the multicell downlink. We solve two optimization problems under a transceiver impairment model and derive the structure of the optimal solutions. We show numerically that these solutions greatly reduce the impact of impairments, compared with beamforming developed for ideal transceivers. Although the so-called multiplexing gain is zero under transceiver impairments, we show that the gain of multiplexing can be large at practical SNRs.

Published at Global Telecommunications Conference (GLOBECOM 2012), 6 pages, 6 figures, 1 table

References in corpus (2)

• Optimality Properties, Distributed Strategies, and Measurement-Based Evaluation of Coordinated Multicell OFDMA Transmission
• Robust Monotonic Optimization Framework for Multicell MISO Systems

Cited by in corpus (4)

• Rate-Splitting to Mitigate Residual Transceiver Hardware Impairments in Massive MIMO Systems
• On the MIMO Capacity with Residual Transceiver Hardware Impairments
• On the Energy Efficiency of MIMO Hybrid Beamforming for Millimeter Wave Systems with Nonlinear Power Amplifiers
• Aggregate Hardware Impairments Over Mixed RF/FSO Relaying Systems With Outdated CSI