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Christos Neophytou

Christos Neophytou

Principal RF Engineer

Followers of Christos Neophytou342 followers
location of Christos NeophytouDenver Metropolitan Area

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  • Timeline

  • About me

    Trading Systems|Residential Real Estate|Machine Learning|Operations Research|Product Dev

  • Education

    • University of Kansas - Graduate School of Electrical Engineering

      1988 - 1994
      Bachelor's degree Electrical Engineering GPA=3.55

    • The University of Kansas

      1991 - 1995
      Master of Science (MSc) Electrical Engineering (Communication Systems & Signal Processing) GPA=3.6

      Activities and Societies: • Master’s Thesis: Design & Implementation of a real-time modem on a TMS320C40 DSP Processor • 2nd Master’s Project: Speaker Dependent Speech Recognition system in MATLAB using Machine Learning techniques (Supervised Learning on ANN (Artificial Neural Networks) and Vector Quantization Clustering & Dynamic Programming technique that produced ~90% accurate word recognition).

  • Experience

    • Mobile Systems International (MSI)

      Dec 1995 - Dec 2003
      Principal RF Engineer

      Domain Expert for the Development of Planet EV RF Planning Tool (MSI 2001-2003)RF Design & Technical Lead (Nextel, CO 2001)Frequency Planning Optimization Consultant (Nextel CO Market 1999-2001), (Nextel Sacramento Market 1 month)RF Consulting Projects, Planet Training (1998-1999)Development of Microwave Planning Tool, Automatic Model Tuning tool, GSM Dynamic Simulator (MSI R&D 1996-1998)Microwave PCS Sharing (PCS PrimeCo, Clearnet 1996)CDMA (IS-95) RF Design for Jacksonville Florida(Bell Atlantic/PCS PrimeCo 1995-1996) Show less

    • Optimi

      Dec 2003 - Dec 2011
      Technology Group Director

      GSM RF Optimization Solutions & ResearchTechnical lead & project manager for CHINA MOBILE GSM retune of 6 cities in SiChuan provinceTechnical lead and project manager for the TELSTRA GSM Spectrum CompressionGSM retunes for AT&T markets LA, Seattle, Portland, New Orleans, Dallas, Denver , San Fran and othersGSM retunes in various international markets and operators Telefonica/Movistar, Telcel, T-Mobile Germany, Reliance, Claro BrazilOperations ResearchPerformed extensive research and prototyped various SA (Simulated Annealing) implementations of temperature and neighborhood algorithms that was used to improve the Optimi AFP (Automatic Frequency Planning) engine (2.5 x improvement in speed, 15% improvement in Cost) Show less

    • Ericsson

      Dec 2011 - Dec 2016
      Solutions Architect IV

      RET Optimization ExpertSolutions for RF Network OperationsProduct DevelopmentProject ManagementCombinatorial Optimization

    • Independent

      Dec 2016 - now
      Financial Markets & Real Estate Investor

    • Christos Properties LLC

      Dec 2016 - Dec 2016
      Financial Markets & Real Estate Investor

      Trading Financial Markets (S&P500, Bonds)Developing Trading Systems (VB, Python)Data Science & Machine Learning Courses (Coursera, Gale, Lynda.Com)FINRA Securities Exam Preparation

    • Meta

      Aug 2020 - Mar 2022
      Facebook Connectivity Group Specialist

      Feature Development of Facebooks Connectivity ProductDeveloped implemented and validated a Signal Estimation Algorithm to predict RF Signal strength in nearby locations where measurements were not present. Improved prediction performance by an average of 4 dB in RMS error compared to existing models. Wrote a white paper on ACP Optimization

  • Licenses & Certifications