Explanation: Several methods are used for representing convolution encoder such as connection pictorial, connection vector or polynomials, state diagram, tree diagram and trellis diagram. 4. Periodic truncation is done by
A. Appending zero to end of the input data sequence
B. Appending zero to the beginning of the input data sequence
C. Appending one’s to end of the data sequence
D. Appending one’s to beginning of the data sequence
Answer:A
Explanation: Several methods are used for representing convolution encoder such as connection pictorial, connection vector or polynomials, state diagram, tree diagram and trellis diagram. 4. Periodic truncation is done by
A. Appending zero to end of the input data sequence B. Appending zero to the beginning of the input data sequence C. Appending one’s to end of the data sequence D. Appending one’s to beginning of the data sequence
Explanation: Convolution code are forced into a block structure by periodic truncation which is done by appending zero to the end of the input data sequence, for the purpose of clearing or flushing the encoding shift register of the data bits.