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Wireless Digital Communications - Design and Theory.part1.rar
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Chapter 1 - Introduction
Definition of Information
Source Entropy
Fundamental Data Capacity
Signal to Noise ratio - Eb/No
Block Diagram of the Communication System
Review / Definition of Some Key Concepts
Eye Pattern
Signal Constellation Diagram
Chapter 1 - References
Chapter 2 -AdditiveWhite Gaussian Noise (AWGN)
Definition of AWGN Noise
Gaussian Distribution
Calculating the BER given AWGN
Generating a BER Curve
Relation of Power Spectrum and AWGN
Computing Noise and Signal Magnitudes
Chapter 2 - References
Chapter 3 - Antipodal, Orthogonal, and Non-orthogonal Signaling
Antipodal Signaling
Orthogonal Signaling
Non-orthogonal Signaling
Analysis of FSK signaling
OrthogonalWaveforms
Orthogonal FSK Demodulators
Chapter 3 - References
Chapter 4 - Carrier Transmission
FSK - Frequency Shift Keying
FFSK - Fast Frequency Shift Keying
mFSK - m-ary FSK
PSK - Phase Shift Keying
mPSK - m-ary Phase Shift Keying
OQPSK - Offset QPSK
Received Phase Ambiguity
Performance of PSK modulation in the presence of AWGN
ASK - Amplitude Shift Keying
MSK - Minimum Shift Keying
OFDM - Orthogonal Frequency Division Multiplexing
OFDM based on m-ary FSK
63OFDM based on ASK
AFSK - Audio Frequency Shift Keying
Summary
Chapter 4 - Reference
Chapter 5 - Frequency and Impulse Response of Optimum Modem Filters
Optimum filter criteria
Raised-Cosine Filter Responses
Filter Response Partitioning
Filter Impulse Response
Filter Response to an Isolated Data Bit
Eye Pattern Generation
Equivalent Noise Bandwidth
Some Frequency Response Defects
Impulse-Response Length Truncation
Detailed Step-by-Step Procedure
Dolph-Chebychev Transmit Pulses
Chapter 5 - Reference
Chapter 6 - Matched Filters
Matched filter for Rectangular Pulses
Matched filter for Square-Root Raised-Cosine Transmit Pulses
Use of the Matched Filter Symmetry to Equalize a Channel
Chapter 6 - Reference
Chapter 7 - Data Codes
Baseband Data Codes
DC-Balance (One's Density) of the Code
Scrambling
Forward Error Correcting (FEC) Codes
Linear Block Codes
AWGN Performance of Linear Block Codes
Statistical Performance of Linear Block Codes
Other Properties of FEC Codes
Interleaving the Codewords
Golay Codes
Longer Codes
Reed-Solomon Codes
Convolutional Codes
Decoding the Convolutional Code
Convolutional Decoders
Viterbi's Algorithm
Summary of Viterbi Decoder
Chapter 7 - Reference
159Chapter 8 - Data Slicer and the Slicing Level
Slicing Level Determination
Source Statistics
Non-Scrambled Data
NRZI-Coded HDLC Calculations
Scrambled Data Calculations
Binomial Distribution
Fixed Slicing-Level Methods
DSP-Based Slicing-Level Determination
Chapter 9 - Clock Recovery
The Importance of Accurate Clock Position
Methods to Recover the Clock
Closed-Loop Clock Recovery
Clock Recovery Filters
Filter Transfer Function
Modulation-Based Clock Recovery
Chapter 9 - Reference
Chapter 10 - Carrier Recovery
Deriving a Carrier Reference
Carrier Generation by Rectification
Carrier Generation by Multiplication
Other Methods of Carrier Generation
2PSK Carrier Recovery - Costas Loop
Chapter 10 - Reference
Chapter 11 - Phase Locked Loops for Carrier and Clock Recovery
Closed Loop Response
Open Loop Response
Lead Lag Filter
Higher Order Loop Filter
Parasitic Poles
PLL Loop Lock time
PLL Noise Bandwidth
Types of Phase Detectors, Lock-in Range
Control Loop Dynamic Range
Chapter 11 - Reference
Chapter 12 - Frame Alignment and Data Carrier Detect
General Data Carrier Detect (DCD) Acquisition
DCD and Frame Alignment based on Message Content
Median Time to False Frame Declaration
MaximumAverage Reframe Time
Going Out of Frame
Other Message Content
Framing on Short Transmissions
Chapter 12 - Reference
220Chapter 13 - Propagation Channel Models
VHF and UHF Channel Models
Minimum-Phase and Non-Minimum-Phase Fades
Rayleigh fading
Circular Polarization
Wideband Data Channels
Rules of Thumb
HF Channel models
Signaling Rate Bounds
HF Channel Simulation
Coefficient Properties
Bit Error Rate Performance of Rayleigh Faded Path
Diversity Reception
Approaches to HF Modem Design
RTIY - Live With the Errors
AMTOR - Simple Error Detection and Re-transmission
AX.25 Packet Transmission - 300 baud HF
More Recent Developments
GTOR
Pactor II
Clover II
Future Improvements
Chapter 13 - Reference
Chapter 14 - Automatic Request for Repeat (ARQ)
SimpleARQ
HybridARQ
Performance of ARQ
Chapter 15 - Testing Considerations
Bit Error Rate vs. Received Signal Level
Baseband BER Test
Butterworth Calibration Filter
Radio Characterization for Data
Radio-based Test
FSK - Transmitter Characterization
Other Transmitter Characterization
FSK - Receiver Characterization
System Characterization
Theoretical EblNo vs. Received Signal Level (RSL)
Pseudo-Level Error Detection Margin
Adjustment Aid - 'Click' box
Bit Error Rate Test Statistics
Chapter 15 - Reference
255Appendix A - Some Useful Probability Distributions
A.1 Probability of Events.
A.2 Histograms, Probability Density, Cumulative Density
A.3 Uniform Distribution
A.4 Binomial Distribution
A.5 Gaussian Distribution
A.6 Poisson Distribution
A.7 Rayleigh Distribution
Appendix B - Pseudo-Random Binary Sequence (PRBS) Generators
B.1 Properties of a PRBS
B.2 Construction of the PRBS Generator.
B.3 Autocorrelation Properties
BA Self Synchronization
B.5 Self Synchronous Scrambler and Descrambler
B.6 Binary Polynomial Arithmetic
Appendix B - Reference
Appendix C - Discrete Fourier and Inverse Discrete Fourier Transforms
& Complex Numbers
C.1 The Fourier Transform and the Impulse Response
C.2 Complex Number Representation
C.3 Description of a Signal using Complex Notation
CA Complex Conjugate
C.5 Discrete Fourier Transform
C.6 Power Spectral Density (PSD)
C.7 Symmetry Requirement for Frequency Response
Appendix C - Reference
Appendix D - Correlation, Convolution, and Laplace Notation for Filters
D.l Convolution and Multiplication
D.2 Convolution
D.3 Frequency and Impulse Response
DA Correlation
D.5 Cross Correlation
D.6 Autocorrelation
D.7 Complex Signals
D.8 Laplace Notation for Complex numbers
Appendix D - Reference |
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