Comparison of phase coherent and non-phase coherent coded communications.
Phase coherent and nonphase coherent coded communications systems, discussing theoretical word error probability vs signal to noise ratio
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Phase coherent and nonphase coherent coded communications systems, discussing theoretical word error probability vs signal to noise ratio
Coding scheme using noiseless feedback link to improve communication over noisy forward link, assuming no bandwidth constraint
Coding scheme using noiseless feedback link to improve communication over noisy forward link, assuming band-limited signals
N-orthogonal phase-modulated codes generalized from first-order Reed-Muller codes and biorthogonal signals
Theorem to characterize class of cyclic codes with three non-zero weights
Sequential coding scheme for additive Gaussian channel with noisy feedback link
Coding theorems and shift register synthesis in relation to processing and transmission of information
Lower bounds to minimum error probability using block coding on noisy discrete memoryless communication channels
Image transmission by two-dimensional contour coding using edge point coordinates studied by computer simulation
Properties of favorable coding schemes, applying results to text transmission through auditory and tactile senses
Prefix coding of histograms for minimal storage
Lower bounds to minimum error probability for block coding on noisy discrete memoryless channels
Synchronization in coded communication systems, considering phase lock loop and square wave correlation function
Block coded telemetry systems design for phase coherent space communication employing double conversion superheterodyne phase locked receivers
Theory for block-coded telemetry systems is useful in testing performance of one- and two-way, phase-coherent telemetry systems when double-conversion, superheterodyne, phase-locked receiver, preceded by bandpass limiter is used to track carrier.
A coded command system is described which is capable of achieving extremely low error probabilities at moderate signal-to-noise ratios. Emphasis is placed on the implementation of the spaceborne portions of the system.
Three software products developed during the study are reported and include: (1) FORTRAN Automatic Code Evaluation System, (2) the Specification Language System, and (3) the Array Index Validation System.