Smart Antennas: 1st Edition (Hardback) book cover

Smart Antennas

1st Edition

By Lal Chand Godara

CRC Press

472 pages | 105 B/W Illus.

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Hardback: 9780849312069
pub: 2004-01-27
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Description

The use of smart antennas to increase mobile communications channels has re-ignited research and development in the field. Practicing engineers are eager to discover more about this subject, and need a comprehensive book that can provide a learning platform and prevent the loss of time spent on searches through journal literature.

Smart Antennas examines nearly all aspects of array signal processing and presents them in a logical manner. It delivers a detailed treatment of antenna array processing schemes, adaptive algorithms to adjust weighting, direction of arrival (DOA) estimation methods, diversity-combining methods that combat fading and reduce errors.

The book introduces the various processor structures suitable for the narrowband field, examining the behavior of both element space and beamspace processors. It then explores adaptive processing, focusing on the simple matrix inversion algorithm, constrained least mean squares (LMS), the neural network approach, and more. The text also describes smart antennas that are suitable for broadband signals, and presents analyses and techniques suitable for correlated fields in narrowband and broadband signals.

This volume supplements its content with extensive references, enabling you to further investigate smart antenna array schemes and application.

Table of Contents

INTRODUCTION

Antenna Gain

Phased Array Antenna

Power Pattern

Beam Steering

Degree of Freedom

Optimal Antenna

Adaptive Antenna

Smart Antenna

Summary

NARROWBAND PROCESSING

Signal Model

Conventional Beamformer

Null Steering Beamformer

Optimal Beamformer

Optimization Using Reference Signal

Beam Space Processing

Effect of Errors

Notation and Abbreviations

References

ADAPTIVE PROCESSING

Sample Matrix Inversion Algorithm

Unconstrained Least Mean Squares Algorithm

Normalized Least Mean Squares Algorithm

Constrained Least Mean Squares Algorithm

Perturbation Algorithms

Structured Gradient Algorithm

Recursive LMS Algorithm

Improved Least Mean Squares Algorithm

Recursive Least Squares Algorithm.

Constant Modulus Algorithm

Conjugate Gradient Method

Neural Network Approach

Adaptive Beam Space Processing

Signal Sensitivity of Constrained LMS Algorithm

Implementation Issues

Notation and Abbreviations

References

Appendices

BROADBAND PROCESSING

Tapped-Delay Line Structure

Partitioned Realization

Derivative Constrained Processor.

Correlation Constrained Processor

Digital Beamforming

Frequency Domain Processing

Broadband Processing Using Discrete Fourier Transform Method

Performance

Notation and Abbreviations

References

CORRELATED FIELDS

Correlated Signal Model

Optimal Element Space Processor

Optimized Postbeamformer Interference Canceler Processor

Signal-to-Noise Ratio Performance

Methods to Alleviate Correlation Effects

Spatial Smoothing Method

Structured Beamforming Method

Correlated Broadband Sources

Notation and Abbreviations

References

DIRECTION-OF-ARRIVAL ESTIMATION METHODS

Spectral Estimation Methods

Minimum Variance Distortionless Response Estimator

Linear Prediction Method

Maximum Entropy Method

Maximum Likelihood Method

Eigenstructure Methods

MUSIC Algorithm

Minimum Norm Method

CLOSEST Method

ESPRIT Method

Weighted Subspace Fitting Method

Review of Other Methods

Preprocessing Techniques

Estimating Source Number

Performance Comparison

Sensitivity Analysis

References

SINGLE-ANTENNA SYSTEM IN FADING CHANNELS

Fading Channels

Channel Gain

Single-Antenna System

Notation and Abbreviations

References

DIVERSITY COMBINING

Selection Combiner

Switched Diversity Combiner

Equal Gain Combiner

Maximum Ratio Combiner

Optimal Combiner

Generalized Selection Combiner

Cascade Diversity Combiner

Macroscopic Diversity Combiner

Notation and Abbreviations

References

About the Series

Electrical Engineering & Applied Signal Processing Series

Learn more…

Subject Categories

BISAC Subject Codes/Headings:
TEC007000
TECHNOLOGY & ENGINEERING / Electrical
TEC061000
TECHNOLOGY & ENGINEERING / Mobile & Wireless Communications