On the MIMO Capacity with Residual Transceiver Hardware Impairments

Abstract

Radio-frequency (RF) impairments in the transceiver hardware of communication systems (e.g., phase noise (PN), high power amplifier (HPA) nonlinearities, or in-phase/quadrature-phase (I/Q) imbalance) can severely degrade the performance of traditional multiple-input multiple-output (MIMO) systems. Although calibration algorithms can partially compensate these impairments, the remaining distortion still has substantial impact. Despite this, most prior works have not analyzed this type of distortion. In this paper, we investigate the impact of residual transceiver hardware impairments on the MIMO system performance. In particular, we consider a transceiver impairment model, which has been experimentally validated, and derive analytical ergodic capacity expressions for both exact and high signal-to-noise ratios (SNRs). We demonstrate that the capacity saturates in the high-SNR regime, thereby creating a finite capacity ceiling. We also present a linear approximation for the ergodic capacity in the low-SNR regime, and show that impairments have only a second-order impact on the capacity. Furthermore, we analyze the effect of transceiver impairments on large-scale MIMO systems; interestingly, we prove that if one increases the number of antennas at one side only, the capacity behaves similar to the finite-dimensional case. On the contrary, if the number of antennas on both sides increases with a fixed ratio, the capacity ceiling vanishes; thus, impairments cause only a bounded offset in the capacity compared to the ideal transceiver hardware case.

Accepted for publication at the IEEE International Conference on Communications (ICC 2014), 7 pages, 6 figures

References in corpus (3)

• A New Look at Dual-Hop Relaying: Performance Limits with Hardware Impairments
• MIMO Transmission with Residual Transmit-RF Impairments
• Optimal Coordinated Beamforming in the Multicell Downlink with Transceiver Impairments

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• Asymptotic Analysis of SU-MIMO Channels With Transmitter Noise and Mismatched Joint Decoding
• Impact of Transceiver Impairments on the Capacity of Dual-Hop Relay Massive MIMO Systems
• Optimal Data Detection and Signal Estimation in Systems with Input Noise
• Energy Efficiency Optimization in Hardware-Constrained Large-Scale MIMO Systems
• On the Impact of Hardware Impairments on Massive MIMO
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• On the Joint Impact of Hardware Impairments and Imperfect CSI on Successive Decoding