Digital Communication

digital communication, digital communication assignment,  digital communication assignment no 4,  digital communication assignments,  digital communication all assignments Q.1) The information bit duration in DS-BPSK spread spectrum communication system is 4 ms while the chipping rate is 1 MHz. Assuming an average error probability of 10 –5 for proper defection of message signal, calculate the jamming margin. Interpret your result. Q.2) Develop a schematic for PN sequence to get maximum length of 255 states. Q.3) State and explain properties of PN sequence. Q.4) A PN sequence is generated using a feedback shift register of length m = 4 the chip rate is 107 chips per second. Find the following parameter : i) PN sequence length ii) Chip duration of the PN sequence iii) PN sequence period. Q.5) Develop maximal-length codes for the feedback configuration [6,5,3,2] whose period is 63 and initial seed is 100000 and verify sequence as PN sequence. Q.6)