Date of Birth: 21/06/69

Nationality: British/New Zealand (dual)

Main Skills:

• Digital Signal Processing algorithm design and implementation for digital communications (radio modem design, (de)modulation/coding, filtering, acquisition/tracking etc.).

• 3G physical layer, especially chip rate processing and HSPA.

• Communication system modelling and simulation using Matlab, COSSAP, Mathcad etc.

• Software engineering including experience of the full software lifecycle on several projects. Competent in architecture, design, implementation and testing of multiprocessor real time systems.

• Real time embedded C including the use of real time kernels.

• Preparation of quality technical documentation (specifications, feasibility/design documents etc.).

Secondary skills:

• C++, Python, PERL, combined Matlab/C, assembler (esp. on TI C64xx DSPs), MS Visual C++, TI Code Composer Studio, configuration management tools.

• Digital/analogue hardware design.

• Radio systems design (propagation, transceiver architectures, on-air protocols).

• Languages: French (advanced) and Mandarin (beginner).

10/2007 onwards.  DSP Consultant on various projects. Main experience includes:

4G LTE development (3GPP Releases 8 to 10)

• LTE receiver development.

3G HSPA+ development (3GPP Releases 6 to 9)

This work (and from 2000 to 2006) generally covers design, documentation, implementation and testing of many features to aggressive time scales. Most coding used real time embedded C on TI C64xx/C62xx DSPs.

• Dual cell and MIMO HSPA+ receivers including Matlab simulations. Ongoing performance optimizations to algorithms until uncoded 64-QAM had zero BLER in ideal conditions.

• Integrating Matlab models with a Matlab/C++ GUI. Developed related tools in Python/Matlab.

• Involved in design and implementation of many release 6 to 9 features (64-QAM, DTX/DRX operation, CQI table generation, HS-SCCH orders, etc.).

• System architect for DC-HSUPA and multi-UE enhanced UL cell FACH features.

9/2006 to 9/2007 Real Time Embedded Engineer; Cambridge Silicon Radio, Cambridge, England.

System on Chip:

• Implemented HSDPA driver for 3G layer 1 software. Provided enhancements to existing implementation of Chip Rate Processing software.

10/2000 to 8/2006 DSP Engineer; Ubinetics Ltd, Cambridge, England.

TM100 / TM500 (plus) / Multi-UE 3G Test Mobiles:

• 3GPP compliant Searcher: This substantial piece of physical layer software (~18000 lines of C) provided robust inter/intra-frequency measurements, cell search, ray tracking and other algorithms intended for use in real radio channels on the TM500 plus test mobile. Designed with one other person and implemented ~80% alone.

• High Speed Downlink Packet Access (HSDPA) Rake receiver: This was the first commercial HSDPA receiver in the world and successfully ran 14 Mbit/s over the air on the TM500 test mobile. Co-authored a related patent, “Facilitating reference signal cancellation”.

• Multi-UE: Involved in design and implementation of extensions to the TM500 test mobile to support up to 32 HSDPA mobiles, each with an independent radio channel propagation model.

• Matlab simulation of a 3G mobile: Responsible for signal acquisition and tracking algorithms, simulation control software and MySQL database interface software.

• TM100 Searcher: Overall responsibility for design and implementation of original ‘searcher’ software on the TM100 test mobile. Implemented and documented various CDMA algorithms including transmit diversity detection, AFC, path searcher, Delay Locked Loop, cell search etc. Complete responsibility for redesigning and improving original prototype software.

9/1999 to 9/2000 Principal Engineer; Thales Research Ltd (Part of former CSF-Thomson Racal).

TETRA covert transceiver development:

• Successfully implemented Trans European Trunked Radio (TETRA) software. Responsibilities included: Layer 2 (Lower MAC), Encryption algorithms and Vocoder integration as well as other miscellaneous DSP software. All programming in C and (less often) TMS C54X assembler.

• Worked in 3 man DSP team coding and testing to an existing specification with some software design and documentation.

9/1998 to 8/1999 Senior Engineer; Racal Research Ltd, Reading, England.

Tactical modem study:

• Developed novel DSP algorithms for next generation tactical radio modem (including QAM/GMSK (de)modulation, equalisation and signal acquisition/tracking algorithms).

• Designed GMSK frequency hopping radio modem demonstrator using COSSAP.

4/1995 to 8/1998 Design Engineer; Racal Research Ltd, Reading, England.

• In charge of requirements capture, feasibility studies and initial design for (TRACS) linear digital telemetry modem. Successfully designed and simulated the modem in COSSAP using C.

• Designed digital hardware for modem board of military tactical radio.

• Designed and built Cartesian loop amplifier linearization circuit.

• Produced feasibility studies on short range radio propagation and other areas.

1994 to 1995 Systems Engineer; Racal Messenger Ltd, Bracknell, England.

• Systems engineer for the digital trunked radio group. Tasks included writing technology papers and short term feasibility studies for proposed radio systems.

1991 to 1992 Project Manager; British Telecom plc, London, England.

• Responsible for the project management of international 0800 freephone service upgrade from an international exchange to a digital network.