Howtosignalprocessing
- What is meant by constraint length and free distance of a convolution code?
- What is free distance in convolutional codes?
- What is the meaning of 2 1 3 convolutional code?
- What are the types of convolutional codes?
What is meant by constraint length and free distance of a convolution code?
Constraint Length of Convolutional Code
Constraint length, k, is the size of the shift register in the memory encoder without feedback. It means how many stages are needed for the combinational logic that produces the output bits. The shift register of size k, stores the present bit and the past (k -1) bits.
What is free distance in convolutional codes?
Specifically, the free distance of a convolutional code is the difference in path metrics between the all-zeroes output and the path with the smallest non-zero path metric going from the initial 00 state to some future 00 state.
What is the meaning of 2 1 3 convolutional code?
The (2, 1, 3) convolutional encoder is used in the proposed method and is shown in Figure 1(a). The initial value of the blocks, U n , U n-1 and U n-2 are set to zero. ... Context 2. ... process is repeated until all the states are processed.
What are the types of convolutional codes?
As in the case of linear block codes, there are two types of linear convolutional codes: binary and nonbinary convolutional codes.
