Publications

Junction tetrode transistors 1 of the type currently produced for research purposes at Bell Telephone Laboratories are suitable for highfrequency applications.

An innovative approach to nondestructive evaluation (NDE) utilizing noncontacting optical sensors has been demonstrated.

In addition to spectrum efficient angle modulation techniques such as PSK, digital radio transmission may use quadrature amplitude shift keying (QASK, also called digital QAM) or combined amplitude

This paper is motivated by the problem of detecting local changes or differences in shape between two samples of objects via the nonlinear deformations required to map each object to an atlas stand

Sophisticated techniques are available for removing redundancy in TV pictures.1,2 These reduce the cost of transmitting video signals over telephone lines, as, for example, in video-conferencing sy

The Detection of Two Modulated Waves Which Differ Slightly in Carrier Frequency * By C H A R L E S B.

A large body of literature already exists for the problem of identifying a control system or communication channel with noisy measurements.

The synchronization of large systems of geographically separated oscillators is of considerable practical interest for pulse code modulation (PCM) switching.

The electrical capacitance between two conductors separated by a dielectric is a quantity which can be calculated with ease only in certain geometrical arrangements of high symmetry.

AS THE demand for long distance telephone circuits has increased, new transmission systems capable of handling more channels per conductor have been developed.