1. What do you mean by a binary cyclic code? Discuss the features of encoder and decoder used for cyclic code using an (n – k) bit shift register. 2. How can LDPC codes be represented graphically?...

1. What do you mean by a binary cyclic code? Discuss the features of encoder and decoder used for cyclic code using an (n – k) bit shift register.

2. How can LDPC codes be represented graphically? Give step-by-step procedure for LDPC decoding using the bit-flipping algorithm.

3. Comment on the error-detecting and error-correcting capabilities of Hamming and convolution codes.

4. In the context of channel noise, which type of interleavers are more useful in wireless communication systems?