Title :
Determinate state convolutional codes
Author :
Collins, Oliver M. ; Hizlan, Murad
Author_Institution :
Johns Hopkins Univ., Baltimore, MD, USA
fDate :
12/1/1993 12:00:00 AM
Abstract :
A determinate state convolutional code is formed from a conventional convolutional code by pruning away some of the possible state transitions in the decoding trellis. This staged power transfer proves to be an extremely efficient way of enhancing the performance of a concatenated coding system. The authors analyze the decoding complexity and free distances of these new codes, determine some important statistical properties of the decoder output, and provide simulation results for performance at the low signal-to-noise ratios where a real communications system would operate. Several concise, practical examples are presented
Keywords :
convolutional codes; decoding; statistical analysis; communications system; concatenated coding system; decoder output; decoding complexity; decoding trellis; determinate state convolutional code; free distances; low signal-to-noise ratios; performance; simulation results; staged power transfer; state transitions; statistical properties; Analytical models; Block codes; Concatenated codes; Convolution; Convolutional codes; Decoding; Frequency synchronization; Performance analysis; Signal analysis; Signal to noise ratio;
Journal_Title :
Communications, IEEE Transactions on
