Smart Antennas

ISBN-13: 9780849312069 / Angielski / Twarda / 2004 / 472 str.

Lal Chand Godara; Godara Chand Godara

Opis

Delivers a treatment of antenna array processing schemes, adaptive algorithms to adjust weighting, direction of arrival (DOA) estimation methods, and diversity-combining methods that combat fading and reduce errors. This book discusses the various processor structures suitable for the narrowband field.

Spis treści

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

O autorze

Lal Chand Godara