Analytical Evaluation of Nonlinear Distortion Effects on Multicarrier

Description

Due to their ability to support reliable high quality of service as well as spectral and power efficiency, multicarrier modulation systems have found increasing use in modern communications services. However, one of the main drawbacks of these systems is their vulnerability to nonlinear distortion effects. Analytical Evaluation of Nonlinear Distortion Effects on Multicarrier Signals details a... Read more

Due to their ability to support reliable high quality of service as well as spectral and power efficiency, multicarrier modulation systems have found increasing use in modern communications services. However, one of the main drawbacks of these systems is their vulnerability to nonlinear distortion effects. Analytical Evaluation of Nonlinear Distortion Effects on Multicarrier Signals details a unified approach to well-known analytical results on memoryless nonlinearities that takes advantage of the Gaussian behavior of multicarrier signals.

Sharing new insights into the behavior of nonlinearly distorted multicarrier signals, the book begins with a review of the fundamental principles of multicarrier transmission and multicarrier-based systems. Next, it covers well-known results on nonlinear distortion of Gaussian signals and examines the accuracy of the use of Gaussian approximation for evaluating nonlinear effects. It also considers the performance of various multicarrier-based systems in the presence of different types of nonlinear devices.

Describes general clipping and filtering techniques to reduce the envelope fluctuations of multicarrier signals
Analyzes quantization effects caused by the numerical accuracy required in the DFT computations
Discusses quantization requirements of analog-to-digital converters
Redefines loading techniques to take into account nonlinear distortion issues on adaptive multicarrier systems
Examines the impact of nonlinear signal processing techniques for reducing the envelope fluctuations of OFDMA signals
Presents performance results for all the discussed applications

The book covers the essential principles of multicarrier modulations, including OFDM modulations and other multicarrier schemes. It describes multicarrier modulation systems that will be used in next-generation communications systems and also provides new insight into the behavior of nonlinearly distorted multicarrier signals.

Illustrating the application of the nonlinear distortion analysis techniques presented, the book provides you with a wide range of analytical tools to assess the effects of nonlinearities on the performance of multicarrier-based schemes.

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List of Abbreviations
List of Symbols

Introduction
Book Structure

Multicarrier Transmission
Orthogonal Multicarrier Signals
Orthogonal Frequency Division Multiplexing
     Transmitter Structure
     Receiver Structure
Other Multicarrier Schemes
     Discrete Multitone
          Bandpass Approach
           Baseband Approach
     Orthogonal Frequency Division Multiple Access
          Downlink Transmission
          Uplink Transmission
     Multicarrier Code Division Multiple Access
          Downlink Transmission
          Uplink Transmission
     Software Radio
Characterization of the Transmitted Signals
     Spectral Characterization
          Other Multicarrier Schemes
     Time Domain Characterization
          Other Multicarrier Schemes
     Envelope Fluctuations

Nonlinear Distortion of Gaussian Signals
Memoryless Nonlinearities Characterization
     Memoryless Nonlinear Characteristics
     Cartesian Memoryless Nonlinear Characteristics
     Polar Memoryless Nonlinear Characteristics
Memoryless Nonlinear Distortion of Gaussian Signals
Cartesian Memoryless Nonlinearities with Gaussian Inputs
Polar Memoryless Nonlinearities with Gaussian Inputs

Accuracy of the Gaussian Approximation for the Evaluation of Nonlinear Effects
Exact Characterization of Nonlinearly Distorted Multicarrier Signals
     Nonlinear Characteristic of Order 3
      Nonlinear Characteristic of Order 5
     Generalization
Analytical Characterization of Nonlinearly Distorted Multicarrier Signals using the Gaussian Approximation
Accuracy of the Gaussian Approximation
Discussion

Nonlinear Effects in Specific Multicarrier Systems
Clipping and Filtering Techniques
     Transmitter Structure
     Signal Characterization Along the Signal Processing Chain
     Numerical Results
     Analytical BER Performance
     Performance Results
     Complementary Remarks
Impact of Quantization Effects on Multicarrier Signals
     Quantization Effects on Multicarrier Modulated Signals
     Statistical Characterization of the Transmitted and Received Signals
     Performance Results
Impact of Quantization E_ects on Software Radio Signals
     ADC Quantization in Software Radio Architectures
     Statistical Characterization of the Quantized Signals
     Performance Results
Loading Techniques with Nonlinear Distortion Effects
     Nonlinear Signal Processing for Multicarrier Signals
     Loading Techniques
          Single Carrier Analysis
          Multicarrier Analysis
          Waterfilling
          Leke-Cioffi Algorithm
     Loading with Nonlinear Distortion Effects
     Performance Results
Impact of Nonlinear Signal Processing on OFDMA Signals
     Nonlinear Effects on OFDMA Signals
     Statistical Characterization of the Transmitted Signals
     Signal-to-Interference Ratio Levels on the Received Signals
          Multiple Users
          Single User
     Performance Results
          Downlink Transmission
          Uplink Transmission
Discussion

Output Autocorrelation for Polar Memoryless Nonlinearities with Gaussian Inputs

Analytical Results for Specific Nonlinearities
Cartesian Memoryless Nonlinearities
Polar Memoryless Nonlinearities

Exact Characterization of a Polar Memoryless Nonlinearity with Characteristic g(R) = R⁵
Generalization

Approximated Symbol Error Rate for Cross QAM Constellations

References

Author(s)

Biography

Theresa Araújo, Rui Dinis

Analytical Evaluation of Nonlinear Distortion Effects on Multicarrier Signals

Description

Table of Contents

Author(s)

Biography

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