DSP Architecture Specification. Specified a chip architecture targeted to a unique application. Defined memory allocation, control structure, bus connectivity, data flow, as well as the instruction set. Patent was granted on chip design.
AM Stereo Radio DSP Microprocessor Integration. Researched AM stereo theory to develop algorithms which would enable digital algorithms to perform typical analog functions. Algorithms resolved L+R/L-R channel and I/Q channel input issues to create desired results with the co-development of a coherent frequency sampling method. Co-authored two conference papers and applied for patent on both the algorithm and the method.
Commercial Modem Implementation. Managed a group of engineers to develop, implement, test and deploy a commercial V.32bis modem and design for license. All levels of project management were required to meet schedules and pass rigorous government testing.
V.32 Modem Initial Design & Implementation. Developed algorithms and test procedures for the Trellis Coded Modulation and Viterbi decoder to allow 9.6 Kbps data transmission over 3 Khz bandwidth telephone lines, then developed a bounding method to enable DSP microprocessor implementation. Wrote and presented several papers on the project to various IEEE conferences. Also co-developed and implemented an algorithm and test procedures for echo cancellation and equalization portions of the modem. Procedures met industry (CCITT) specifications. Efforts earned corporate support for expenditures on a contract consultant, Dr. Peter McLane of Queens University in Ontario, Canada.
DTMF Research. Developed algorithms to generate dual tone multi-frequency signals (DTMF), then developed a DTMF generator for integration into existing products. Final product test passed the Mitel test tape, the standard used to measure DTMF detector performance. Followed documentation of the algorithm for DTMF generation by working with a colleague to invent an improved DTMF detection method using Infinite Impulse Response (IIR) filter structures. This innovation increased detection capability and is better suited for microprocessor implementation because it allows the doubling of the number of channels in which a single DSP processor can accurately detect DTMF signals.
Reed Solomon Codes. Researched RS Codes, especially the cross-related codes used on compact discs, and developed the code on the Motorola DSP microprocessor. Though totally unfamiliar with these codes, developed, tested, and implemented an algorithm within two months, then conducted a successful presentation on the codes to Motorola DSP engineers. Activities directly benefited one client with an aggressive production schedule.
On-Site Customer Support. Spent six weeks over a twelve week period on-site in support of a digital radar detector manufacturer. By designing several algorithms to detect specific signals, by developing test procedures for and integrating final product hardware and software, and by providing additional technical direction during production, helped product exceed customer expectations. Activities helped client meet aggressive design schedule and go from concept to working prototype within twelve weeks. Client decided to use Motorola DSP within a week.
Customer Helpline Introduction. Introduced a dedicated helpline service for customer support to replace an ad hoc method of problem resolution which was deleterious both to Motorola engineers and to the timely delivery of quality customer service. The helpline concept placed engineers on a regular rotation in a dedicated office housing all DSP product information and related computer systems. Engineers logged customer calls on a database for future reference. The helpline, fielding approximately two hundred calls daily, increased customer satisfaction with responsiveness to theoretical, hardware, and software.