MDP periodically time-varying convolutional codes

In this paper we use some classical ideas from linear systems theory to analyse convolutional codes. In particular, we exploit input-state-output representations of periodic linear systems to study periodically time-varying convolutional codes. In this preliminary work we focus on the column distance of these codes and derive explicit necessary and sufficient conditions for an (n, 2, 1) periodically time-varying convolutional code to have Maximum Distance Profile (MDP).

Standardized reporting using CODES (Crash Outcome Data Evaluation System).

National Highway Traffic Safety Administration, Washington, D.C.

Housing codes : the key to housing conservation /

Cover title.

Codes of fair competition as approved

Mode of access: Internet.

The crash outcome data evaluation system (CODES).

National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

Report to Congress: benefits of safety belts and motorcycle helmets. Based on data from the Crash Outcome Data Evaluation System (CODES).

Mode of access: Internet.

Report number codes used by the USAEC Division of Technical Information in cataloging reports /

"August 1970."

Report number codes used by the USAEC Technical Information Center in cataloging reports /

Mode of access: Internet.

Rural-urban continuum codes for metro and nonmetro counties /

"April 1990"--P. iii.

Research and innovation in the building regulatory process : proceedings of the first NBS/NCSBCS joint conference, held in Providence, Rhode Island, on September 21-22, 1976, in conjunction with the ninth annual meeting of the National Conference of States on Building Codes and Standards (NCSBCS), inc. /

Mode of access: Internet.

A treatise upon some of the general principles of the law : whether of a legal, or of an equitable nature : including their relations and application to actions and defenses in general : whether in courts of common law, or courts of equity : and equally adapted to courts governed by codes /

Mode of access: Internet.

Penal codes of France, Germany, Belgium and Japan.

Mode of access: Internet.

A panel study of income dynamics : procedures and tape codes, 1974 interviewing year, Wave VII, a supplement /

"ISR code no. 4013"--T.p. verso.

A panel study of income dynamics : procedures and tape codes, 1977 interviewing year, wave X, a supplement /

"Greg J. Duncan and James N. Morgan are the principal researchers."

Constructing strongly-MDS convolutional codes with maximum distance profile

This paper revisits strongly-MDS convolutional codes with maximum distance profile (MDP). These are (non-binary) convolutional codes that have an optimum sequence of column distances and attains the generalized Singleton bound at the earliest possible time frame. These properties make these convolutional codes applicable over the erasure channel, since they are able to correct a large number of erasures per time interval. The existence of these codes have been shown only for some specific cases. This paper shows by construction the existence of convolutional codes that are both strongly-MDS and MDP for all choices of parameters.