Full-Duplex Transceiver System Calculations: Analysis of ADC and Linearity Challenges

Despite the intensive recent research on wireless single-channel full-duplex communications, relatively little is known about the transceiver chain nonidealities of full-duplex devices. In this paper, the effect of nonlinear distortion occurring in the transmitter power amplifier (PA) and the receiv...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2014-07, Vol.13 (7), p.3821-3836
Main Authors: Korpi, Dani, Riihonen, Taneli, Syrjala, Ville, Anttila, Lauri, Valkama, Mikko, Wichman, Risto
Format: Article
Language:English
Subjects:
Analog-digital conversion, digital-analog conversion, pcm coding
Applied sciences
Cancellation
Chains
Detection, estimation, filtering, equalization, prediction
Distortion
Dynamical systems
Exact sciences and technology
Information, signal and communications theory
Mathematical models
Nonlinear distortion
Nonlinear dynamics
Nonlinearity
Radio frequency
Radiocommunications
Receivers
Signal and communications theory
Signal to noise ratio
Signal, noise
Telecommunications
Telecommunications and information theory
Transceivers
Transmitters. Receivers
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Summary:Despite the intensive recent research on wireless single-channel full-duplex communications, relatively little is known about the transceiver chain nonidealities of full-duplex devices. In this paper, the effect of nonlinear distortion occurring in the transmitter power amplifier (PA) and the receiver chain is analyzed, beside the dynamic range requirements of analog-to-digital converters (ADCs). This is done with detailed system calculations, which combine the properties of the individual electronics components to jointly model the complete transceiver chain, including self-interference cancellation. They also quantify the decrease in the dynamic range for the signal of interest caused by self-interference at the analog-to-digital interface. Using these system calculations, we provide comprehensive numerical results for typical transceiver parameters. The analytical results are also confirmed with full waveform simulations. We observe that the nonlinear distortion produced by the transmitter PA is a significant issue in a full-duplex transceiver and, when using cheaper and less linear components, also the receiver chain nonlinearities become considerable. It is also shown that, with digitally intensive self-interference cancellation, the quantization noise of the ADCs is another significant problem.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2014.2315213