Outline
Day One
Digital Modulation
• Introduction to some wireless standards •
Multiple Access Principles (TDMA, CDMA, FDMA, SDMA, OFDMA) •
Complex envelope representation of signals and systems • Stochastic theory review •
Digital modulation theory
- BPSK, DPSK, QPSK, OQPSK, MSK, GMSK, FSK, DQPSK, p/4- DQPSK, FQPSK, p/4-FQPSK, 16PSK, 16QAM, 64QAM, etc.
- Pulse shaping filter selection
- Nonlinear amplification affects (spectral regrowth)
- Advanced modulation techniques •
Spread spectrum
- Frequency Hoping
- Direct Sequence CDMA
- RAKE Receiver
- uplink and downlink example
- PN code coarse and fine time tracking
- Receiver block diagram
- WCDMA Introduction •
Orthogonal Frequency Division Multiplexing (OFDM)
- Single Carrier and Multiple Carrier Examples
- Multipath Mitigation Technique
- Frequency Domain Equalization
Day Two
Radio Propagation Characterization
•
AWGN channel •
Rayleigh multipath fading • Rician multpath fading • Delay spread concept (flat vs. frequency selective fading)
- Indoor propagation measurements
- Outdoor propagation measurements • Log Normal Shadowing
- Governing Principles
- Carrier Frequency Dependency • Path Loss
- Free Space, Hata, Walfish-Bertoni, etc.
- Micro cell measurements
- Macro cell measurements • Man made interference
- Adjacent channel interference
- Co-channel interference •
Simulating multipath fading channels
- Jakes, LPF-ing, etc.
Signal Detection Methods
• BER performance discussion between theory and practice • Coherent detection architectures
- Open Loop, Closed Loop, etc. • Non-coherent detection of p/4-DQPSK, DQPSK & GMSK
- Differential Detection, Maximum Likelihood, etc. • Implementation issues and design for manufacturability •
BER Performance Comparison
- Various Channel Conditions
Day Three
Performance Improvement Techniques
•
Forward Error Correction
- Block, Convolutional, Turbo, Reed-Solomon, Concatenated • Punctured coding discussion
- BER performance discussion •
Interleaver/de-interleaver •
Antenna receiver diversity techniques
- Switching, Equal Gain, Maximal Ratio, Optimal Combining • Symbol timing recovery methods •
Equalization techniques
- Linear, decision feedback, MLSE • Equalization coefficient adaptation schemes
- LMS, RLS, SMI, etc. • Space Time Equalization
- ML perspective
- Generalized RAKE (G-RAKE) •
Adaptive Antenna Arrays
- MMSE and MSINR based cost functions
- Eigen-spectra investigation •
Antenna transmitter diversity techniques
- Space-time block codes, closed loop
- MIMO
Day Four
Digital Signal Processing
•
Automatic frequency control •
Automatic gain control • Channel quality estimation techniques • Concept of dual detection receivers • Power control loops
- Uplink and Downlink
- Multipath mitigation •
Transceiver block diagrams
- Transmitter issues
- Receiver structures • Transmit power amplifier linearization Overview
Computer Simulation Techniques
• Goals of computer simulations • Simulation tools
- Complex Envelope domain • Estimation Methods
- Monte Carlo, Importance Sampling, Tail Extrapolation, Semi-Analytic • A Comparison of the simulation methods discussed
- Usage guidelines