Machine-aided Design of Context-free Grammars

Machine-aided Design of Context-free Grammars
Author: Thomas G. Evans
Publisher:
Total Pages: 30
Release: 1965
Genre: Computer-aided design
ISBN:

The following paper represents work to date on the deformation method for quadratic programming and thus may be regarded as a sequel to Zahl, S. (1964) A Deformation Method for Quadratic Programming, Research Note AFCRL-63-132. It gives an explanation of a modified Iverson programming language and uses this to give a detailed algorithm for the Zahl Deformation Method of Quadratic Programming.

Plurality-count Diversity Combining for Fading M-ary Transmissions

Plurality-count Diversity Combining for Fading M-ary Transmissions
Author: John N. Pierce
Publisher:
Total Pages: 38
Release: 1965
Genre: Alphabets
ISBN:

The performance of a plurality-count diversity combiner for fading M-ary transmissions is analyzed, and calculated error probabilities are presented graphically for alphabet sizes of 2, 8, and 32. The performance is shown to be within 3 dB of that of an optimum square-law combiner for moderate alphabet sizes when there is no restriction on the allowable number of diversity branches. It is shown that a worthwhile saving in transmitted power can be effected by using nonbinary alphabets with plurality-count combining for the transmission of binary data. The availability of extra information from the combiner for use with error-correction is discussed.