Engineering topics
Publications and source records attributed to Rumsey, H., Jr..
In a previous paper Pierce considered the problem of optical communication from a novel viewpoint, and concluded that performance will likely be limited by issues of coding complexity rather than by thermal noise. This paper reviews the model proposed by Pierce and presents some results on the analysis and design of codes for this application.
The design of an optimal merged keycode data base information retrieval system is detailed. A probability distribution of n-bit binary words that minimized false drops was developed for the case where the set of desired records was a subset of tagged records.
An upper bound on the rate of a binary code as a function of minimum code distance (using a Hamming code metric) is arrived at from Delsarte-MacWilliams inequalities. The upper bound so found is asymptotically less than Levenshtein's bound, and a fortiori less than Elias' bound. Appendices review properties of Krawtchouk polynomials and Q-polynomials utilized in the rigorous proofs.
Venus radar brightness map, using 40 km separation between range gates and comparable distances between Doppler slices
Primitive trinomials of high degree for use in pseudorandom sequence generation of zeros and ones
Epsilon-delta entropy for probabilistic metric spaces applied to stochastic processes in data transmission
Epsilon-delta entropy concept applied to data compression techniques
Lower bound for asymptotic behavior of epsilon entropy of Gaussian stochastic process on unit interval under square-error fidelity criterion - data compression
Continuous sequential decision for derivation of minimum search time for determining one nonzero mean process in presence of finite number of hypotheses