Communication Systems Engineering with GNU Radio: A Hands-on Approach

fmatter
	Title Page
	Copyright
	Contents
	About the Authors
	Foreword
	Acknowledgments
	Acronyms
	About the Companion Website
	Introduction
ch1
	1.1 Evolution of Radio Frequency Electronics Toward SDR
	1.2 The Complex Envelope and the Justification of the IQ Structure
	1.3 Complex Number Manipulation
	1.4 GNU Radio and GNU Radio Companion
	1.5 Sample Rates, Decimation and Aliasing
	1.6 Low‐pass Filtering or Working on Upper Nyquist Zones
	1.7 ADC and DAC Resolution
	1.8 Power Spectral Density Display with the Frequency Sink
	1.9 Conclusion
	References
ch2
	2.1 SDR Hardware Architecture
	2.2 Using Readily Available Processing Tools
	2.3 Amplitude Modulation and Demodulation
	2.4 Frequency Modulation and Demodulation
		2.4.1 Commercial FM Broadcast: Demodulation and Audio Output
		2.4.2 Stereo Sound and RDS
		2.4.3 FSK Modulation
	2.5 Phase Modulation and Demodulation
		2.5.1 Phase Modulation
		2.5.2 Phase Demodulation
		2.5.3 Radio Data System (RDS)
		2.5.4 The Global Positioning System (GPS)
	2.6 Spectral Occupation of the Various Modulation Schemes
	2.7 Local Oscillator Leakage Issue
	2.8 Conclusion
	References
ch3
	3.1 Connecting to an External Sentence Decoding Tool Using Named Pipes
		3.1.1 POCSAG Single Channel Decoding
		3.1.2 POCSAG Multichannel Decoding
	3.2 TCP/IP Server Running in a Separate Thread
	3.3 XML‐RPC
	3.4 Zero MQ (0MQ) Streaming
	3.5 MQTT
		3.5.1 MQTT for Python, Bash and Octave
	3.6 Conclusion
	References
ch4
	4.1 SDR–RADAR Requirements and Design
	4.2 Correlation: GNU Radio Implementation
	4.3 Passive RADAR Principle and Implementation
	4.4 Active RADAR Principle and Implementation
	4.5 Measurement Principle
	4.6 From Theory to Experiment: Ranging by Frequency Stacking
	4.7 Results
	4.8 Conclusion on Range Measurement
	4.9 Azimuth Resolution Through Spatial Diversity: Synthetic Aperture RADAR
		4.9.1 OFDM RADAR (WiFi)
	4.10 Acquisition for Azimuth Measurement
	4.11 Suppressing Direct Coupling Interference
	4.12 Signal Processing
	4.13 Result Analysis
	4.14 Interferometric Measurement
	4.15 Reproducible Positioning of the Receiving Antenna: Motorized Rail
	4.16 The Radio Frequency Corner Reflector
	4.17 Fine Displacement Measurement
	4.18 Impact of the Atmosphere
	4.19 Time of Flight Measurement with Sub‐sampling Period Resolution and the Use of a Surface Acoustic Wave Cooperative Target for Reproducible Range Simulation
	4.20 Conclusion
	References
ch5
	5.1 Digital Communication Concepts
		5.1.1 What Is Digital Information?
		5.1.2 From Digital Data to Electrical Pulses
		5.1.3 Occupied Bandwidth and Spectral Efficiency
	5.2 Building a QPSK Modulator with GNU Radio
	5.3 Building a QPSK Demodulator with GNU Radio
		5.3.1 Synchronization
			5.3.1.1 The Digital PLL
			5.3.1.2 Maximum Likelihood Estimation and the Costas Loop
			5.3.1.3 QPSK Timing Recovery
		5.3.2 Automatic Gain Control (AGC)
		5.3.3 Assembling All the Components: The Ultimate QPSK Receiver Flowgraph
	5.4 Conclusion
	References
ch6
	6.1 Introduction
	6.2 Polymorphic Types
	6.3 Messages
	6.4 Tags
	6.5 Case Studies
		6.5.1 Improving the gr‐nordic OOT Module
		6.5.2 Converting the QPSK Modem to Packet Mode
	6.6 Conclusion
	References
ch7
	7.1 Introduction
	7.2 The DAB+ Standard
		7.2.1 Foundations of Digital Audio Coding
			7.2.1.1 The Absolute Threshold of Hearing
			7.2.1.2 Critical Bands
			7.2.1.3 Masking
		7.2.2 Audio Coding Standards and Their Usage in DAB and DAB+
			7.2.2.1 The MPEG/ISO/IEC International Audio Standards
			7.2.2.2 The DAB and DAB+ Audio Coders
		7.2.3 Digital Transmission over Time and Frequency‐Selective Channels: The Need for COFDM
			7.2.3.1 Time and Frequency‐Selective Wireless Channels
			7.2.3.2 COFDM: Digital Communication Techniques for the Wireless Channel
			7.2.3.3 The ETSI EN 300 401 DAB Standard
	7.3 Building a DAB+ Transmitter
	7.4 Building a DAB+ Receiver with GNU Radio
		7.4.1 Basic Usage of gr‐dab
		7.4.2 gr‐dab in More Details
	7.5 Conclusion
	References
ch8
	8.1 Introduction
	8.2 When Will the Satellite Fly Overhead?
	8.3 Why Such a Complex Protocol?
	8.4 How to Tackle the Challenge?
	8.5 From the Radio frequency Signal to Bits
		8.5.1 Data Format
		8.5.2 Decoding Data
		8.5.3 Convolutional Encoding of the Synchronization Word
		8.5.4 Convolutional Code Representation as State Machines
		8.5.5 Decoding a Convolutional Code: Viterbi Algorithm
		8.5.6 Constellation Rotation
		8.5.7 From Bits to Sentences: Applying the Viterbi Algorithm Decoding
	8.6 From Sentences to Paragraphs
	8.7 So Much Text … Pictures Now
	8.8 JPEG Image Decoding
	8.9 Conclusion
	References
ch9
	9.1 Python Block
	9.2 Out‐of‐Tree Blocks
	9.3 Cross‐compiling for Running on Headless Embedded Systems
	9.4 Conclusion
	References
ch10
	References
index