Designing next generation sensor systems

Building the next generation of secure satellite communications

Research and development of innovative, advanced technologies to enable the next generation of wireless communications. Design of a radio cognitive engine to sense, analyze, decide, and adapt to changing channel conditions for efficient use of the spectrum and wireless link optimization.

• Designed end-to-end, secure command and control link for UAV using DSSS for time synchronization and frequency hopping multi-band OFDM for data communication• Implemented complete simulation in Matlab and validated using USRP SDRs• Ported Matlab simulation to C++ and run in Odroid device running Linux using UDP drivers via GNU Radio to communicate with RF transceivers• Implemented synchronization simulation for GMR-1 SatCom system in Matlab.

• Systems Engineer for power converter and antenna components of satellite system. Coordinated I&T activities and analyzed unit performance at completion of tests.• Developed Matlab scripts for verification of databases prior to delivery for on-orbit use.

WIRELESS TECHNOLOGIES• 4G, OFDM: LTE, WiMax• 3G, Spread Spectrum: CDMA2000, WCDMA• 2G, GSM• Software Defined RadioANALYSIS TOOLS• Kalman Filter, Cyclostationarity, Neural Networks, Vector Signal Generators, Spectrum Analyzers, Agilent Wireless Systems EmulatorsPROGRAMMING LANGUAGES• C++, Python, MatlabSKILLS• Blind detection and classification of wireless signals using Cyclostationary methods and Neural Networks in a software defined radio environment• PHY layer research of cellular networks, modeling and analysis.• Extensive experience with cellular system simulation tools. i.e. Agilent base station emulator, Simulink and Matlab models.• Analysis of speech codecs for implementation in a wireless system.• Analysis and implementation of channel coding in OFDM system LDPC codes.• Design and implementation of synchronization techniques for OFDM system.• Excellent background on information and communication theory, digital signal processing and random processes.• Led task group on Signal Detection and Classification• Coordinated engineering group on Cognitive Radio• Excellent background on information and communication theory, digital signal processing and random processes.• Developed detection and time synchronization algorithms for WCDMA/CDMA2000 systems under tight timing constrains. Full understanding of spread spectrum rake receiver operation and their use in maximal ratio combining for increase power level of received signal. Analyzed effects of frequency errors on matched filter detection performance. Excellent understanding of maximal length spreading/scrambling code theory. Wrote complete Matlab model of matched filter detection and synchronization algorithm.• Complete understanding of LTE downlink processing chain, from initial synchronization to unpacking of SIBs, including convolutional encoding, interleaving and rate matching, layer mapping, and precoding.

Increased sales from $3 million to $12 millionAdapted company structure to accommodate growth from 40 to 160 employees.

Managed $20 million in assets and liabilities

In charge of setting up new network operations center for wireless network used for automated utility meter readers.