Wireless Communications & Spread Spectrum Design Training
Wireless Communications & Spread Spectrum Design Training Course Description
This three-day Wireless Communications & Spread Spectrum Design Training is designed for wireless communication engineers involved with spread spectrum systems, and managers who wish to enhance their understanding of the wireless techniques that are being used in all types of communication systems and products. It provides an overall look at many types and advantages of spread spectrum systems that are designed in wireless systems today. This course covers an intuitive approach that provides a real feel for the technology, with applications that apply to both the government and commercial sectors.
• How to perform link budgets for types of spread spectrum communications?
• How to evaluate different types of wireless communication transceivers?
• What methods are used for spread spectrum modems, multiple access, OFDM, error detection/correction for digital communication systems?
• What is multipath and how to reduce multipath and jammers?
• What is a Global Positioning System?
• How to use satellite communications for data communication links?
• What techniques are being used for Broadband Communications in both commercial and military radios including networking, JTRS, Link 16, clusters, and gateway?
• How to solve a 3 dimension Direction Finding system using interferometry?
With onsite Training, courses can be scheduled on a date that is convenient for you, and because they can be scheduled at your location, you don’t incur travel costs and students won’t be away from home. Onsite classes can also be tailored to meet your needs. You might shorten a 5-day class into a 3-day class, or combine portions of several related courses into a single course, or have the instructor vary the emphasis of topics depending on your staff’s and site’s requirements.
Transceiver Design. dB power, link budgets, system design tradeoffs, gains/losses, Signal-to-Noise, Probability of Error, Bit Error Rate, Eb/No, link margin, tracking noise and signal level through a complete system, effects and advantages of using spread spectrum techniques.
Transmitter Design. Various types and system designs of spread spectrum transmitters, PSK, MSK, QAM, OFDM, Other, Pseudo-Random code generator, multiple access TDMA/CDMA/FDMA, antenna sizing, transmit/receive, local oscillator, upconverters, sideband elimination, power amplifiers, standing wave ratios.
Receiver Design. Dynamic range, image rejection, limiters, minimum discernable signal, superheterodyne receivers, importance of low noise amplifiers, 3rd order intercept point for intermodulation products, two tone dynamic range, tangential sensitivity, phase noise, mixers, spurious signals, filters, A/D converters, aliasing and anti-aliasing filters, digital signal processors DSPs.
Automatic Gain Control Design & Phase Lock Loop Comparison. AGCs, linearizer, detector, loop filter, integrator, using control theory and feedback systems to analyze AGCs, PLL and AGC comparison.
Demodulation. Demodulation and despreading techniques for spread spectrum systems, pulsed matched filters, sliding correlators, pulse position modulation, CDMA, coherent demod, despreading, carrier recovery, squaring loops, Costas and modified Costas loops, symbol synch, eye pattern, inter-symbol interference, phase detection, Shannon’ s limit.
Basic Probability and Pulse Theory. Simple approach to understanding Probability, Gaussian process, quantization error, probability of error, bit error rate, probability of detection vs probability of false alarm, error detection and correction, interleaving, types of FECs, digital pulsed systems, pseudo-random codes for spread spectrum systems.
Multipath. Specular and diffuse reflections, Rayleigh criteria, earth curvature, pulse systems, vector and power analysis.
Improving the System Against Jammers. Burst jammers, digital filters, adaptive filters simulations and actual design results, quadrature method to eliminate unwanted sidebands, orthogonal methods to reduce jammers, types of intercept receivers.
Global Navigation Satellite Systems. Basic understand of the Global Positioning System GPS and the spread spectrum BPSK modulated signal from space, Satellite transmission, signal structure, GPS receiver, errors, narrow correlator, selective availability SA, carrier smoothed code, Differential DGPS, Relative GPS, widelane/narrowlane, carrier phase tracking KCPT, double difference.
Satellite Communications. Communication Satellites, General Satellite Operation, Fixed Satellite Service, Geosynchronous and Geostationary Orbits, Ground Station Antennas, Carrier power, Equivalent Temperature Analysis, Multiple Channels in the Same Frequency Band, Multiple Access Schemes, Propagation Delay, Cost for Use of the Satellites, Regulations, Types of Satellites Used for Communications,
Broadband Communications and Networking. Mobile Users, Home networking, Power Line Communicatins PLC, Orthogonal Frequency Division Multiplexing OFDM, IEEE 802.11, Bluetooth, Military Radios and Data Links, The Joint Tactical Radio System (JTRS), Software Design Radios, The Software Communications Architecture, Clusters, JTRS Network Challenge, Gateway and Network Configurations, Link 16, TDMA, “Stacked” nets, Time Slot Re-allocation, Bit/Message Structure.
DF & Interferometer Analysis. Positioning and direction finding using a simpified interferometer analysis, direction cosines, basic interferometer equation, three dimensional approach, antenna position matrix, coordinate conversion for moving baseline.
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