dc

12. to transmit the information signal using orthogonal codes
13. symmetric Binary channel
14. Source extension
15. It has soft capacity limit
16. Variable length coding scheme
17. 18
18. Better bit error probability
19. ZERO
20. It has soft capacity limit
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Code No: 56026 :2: Set No. 1
II Fill in the blanks
11. The Parity check matrix of a linear block code is
1 0 1 1 0 0
0 1 1 0 1 0
1 1 0 0 0 1
Its Hamming distance is ___________________
12. The significance of PN sequence in CDMA is ________________
13. The cascade of two Binary Symmetric Channels is a __________________________
14. The source coding efficiency can be increased by using _______________________
15. The advantage of Spread Spectrum Modulation schemes over other modulations is
_________________
16. Entropy coding is a _____________________
17. A convolutional encoder of code rate 1/2 is a 3 stage shift register with a message word
length of 6.The code word length obtained from the encoder ( in bits) is
_____________
18. Relative to Hard decision decoding, soft decision decoding results in _____________
19. If T is the code vector and H is the Parity check Matrix of a Linear Block code, then the
code is defined by the set of all code vectors for which H T .T = ______________
20. The advantage of CDMA over Frequency hopping is ____________
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