Harvind Samra Email & Phone Number

Fairfield, CA, US

Continuing technology development of the software-defined RAN we pioneered by Range Networks (acquired by Africa Mobile Networks). AMN selected Range as the basis for the development of its own in-house Radio Access Network (RAN) solution, because of Range's highly innovative software-based solution which supports both multi-carrier and multi RAT (2G, 3G.

Santa Clara, CA, US

Doing anything and everything from a technical standpoint to commercialize OpenBTS into a complete, deployable cellular solution. More specifically, extensive design and software development at layers 1-4 (PHY, MAC, RLC, RRC, NAS, SGSN/GGSN, MSC/HLR/SMSC, RRLP) of a carrier-grade 2.75G and 3G software-defined mobile network. Successfully deployed and.

OpenBTS (www.openbts.org) is an open source software project dedicated to revolutionizing mobile networks by substituting legacy telco protocols and traditionally complex, proprietary hardware systems with Internet Protocol and a flexible software architecture. This architecture is open to innovation by anybody, allowing the development of new applications.

US

• Development of a new positioning system using existing terrestrial TV signals. Responsible for many critical aspects of system, including:
• Design and implementation of multipath mitigation, positioning, and optimal channel selection algorithms.
• Embedded software implementation of core signal processing algorithms using ECOS/OpenRISC architecture. Real-time implementation based upon multithreading, interrupts, state machines, etc.
• Development of a localized positioning system based upon localized TV transmitters surrounding a building or small area.
• Development of messaging protocols for communication b/w user device and positioning server.
• Development of hybrid positioning solutions; i.e. combining other signals like GPS, DVB with TV signals.

Davis, California, US

• Development of new signal processing algorithms for improvement of communication system performance, particularly efficient handling of packet retransmissions. Current results include:
• A low-complexity diversity algorithm which involves an optimized adaptation of bit-to-symbol mappings per packet retransmission, greatly reducing frame error rates and increasing throughputs in a wide variety of.
• Development of ARQ protocols for MIMO systems, integrating multiple retransmissions via an augmented sphere decoding/detection algorithm.
• Optimal linear precoders that enhance the overall channel capacity provided by packet retransmissions in frequency-selective channels.
• A low-complexity receiver which reduces frame error rates and increases throughputs by exploiting the inherent diversity of retransmissions through time- varying frequency-selective channels.
• A low-complexity channel equalizer based upon iterative decision feedback.

• Responsible for algorithm and software design of signal intelligence (COMINT/SIGINT) systems for various government customers. Project involvement includes:
• A real-time GSM Environment Analyzer, a product that detects and fully characterizes GSM signals in severe co-channel environments, successfully tested and demonstrated at overseas facilities.
• Algorithm development of similar analyzers for EDGE and IS-136 environments.
• Development of commercial drive test set software for GSM, IS-136, and EDGE.
• Limited development of software for an automatic signal detection and classification system involving the use of higher-order cyclostationary statistics.
• A novel geolocation algorithm that uses maximum likelihood estimation techniques.

Cedar Rapids, Iowa, US

Worked in development group of SATCOM product, a digital radio that provides voice and data services for commercial airplanes via the INMARSAT satellite system. Responsible for defining physical layer system requirements and tests for SATCOM products. Project leader for designing a new test apparatus for physical layer testing using advanced signal.

Worked on the RDRN (Rapidly Deployable Radio Network) research project funded by DARPA, contributing to the hardware and signal processing design of a 1.2 GHz, 2 Mbps beamforming digital radio. Also worked on design of a programmable 10 Mbps digital beamforming receiver. Design and implementation of several novel FSK modulation and demodulation schemes.

Ph. D., Electrical Engineering

M.S., Electrical Engineering

Bachelor Of Science (Bs), Electrical Engineering

Education record