Document Type
Thesis
Date of Award
5-31-1989
Degree Name
Master of Science in Electrical Engineering - (M.S.)
Department
Electrical Engineering
First Advisor
Fidel Morales-Moreno
Second Advisor
Joseph Frank
Third Advisor
Chung H. Lu
Abstract
Convolutional codes can be used to improve the reliability of partial-response channels in a Gaussian noise environment. Multilevel partial-response schemes can be used to increase the information rate in a given bandwidth compared to binary partial-response schemes. This thesis deals with the theory and construction of convolutionally encoded 4-ary partial- response schemes. The free Euclidean distance of the combined trellis of rate-1/2 convolutional code and 4-ary partial-response scheme is found through a computer search, using the Viterbi-algorithm.
The matched encoding concept is also applied to find the conditions for matched encoding for combined trellis of rate-1/2 convolutional codes and 4-ary partial-response schemes. Good rate-1/2 convolutional codes for 4-ary partial-response schemes are found and their performance evaluated in a Gaussian noise environment.
Recommended Citation
Patel, Raju P., "Trellis encoded M-ary partial-response schemes" (1989). Theses. 2868.
https://digitalcommons.njit.edu/theses/2868
