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DC COURSE FILE
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GEETHANJALI COLLEGE OF ENGINEERING
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Convolution Codes: Encoding, decodi
- Page 7 and 8: III. To inculcate positive attitude
- Page 9 and 10: 7. Importance of the course and how
- Page 11 and 12: DC 12: Compute the power and bandwi
- Page 13 and 14: 10. Course mapping with PEO’s and
- Page 15 and 16: 13.Micro plan : Sl. no Unit No. Tot
- Page 17 and 18: 14.Detailed Notes UNIT 1 : Elements
- Page 19 and 20: A communication system may transmit
- Page 21: the wavelength is extremely long, m
- Page 25 and 26: asic elements of digital communicat
- Page 27 and 28: 4. Channel introduced many types of
- Page 29 and 30: 5. Bandwidth is another scarce reso
- Page 35 and 36: Pulse Code Modulation ‣ PCM gener
- Page 37: 77777333333333333333333333333333333
- Page 40 and 41: • The most common technique for s
- Page 42 and 43: Pulse Code Modulation (PCM) : • P
- Page 44 and 45: Figure 3.11 Illustration of the qua
- Page 46 and 47: Quantization (nonuniform quantizer)
- Page 48 and 49: Time-Division Multiplexing(TDM):
- Page 50 and 51: Let m n where T The error signal is
- Page 52 and 53: 3. Simplify receiver design Because
- Page 54 and 55: Figure 3.27 Block diagram illustrat
- Page 56 and 57: Adaptive Differential Pulse-Code Mo
- Page 60 and 61: • One amplitude encodes a 0 while
- Page 62 and 63: • Applications - On voice-grade l
- Page 64 and 65: M-ary PSK: Using multiple phase ang
- Page 66 and 67: Offset quadrature phase-shift keyin
- Page 68 and 69: Fig. 6.28 6.28 Figure 6.30 (a) Inpu
- Page 70: Figure 6.31 Block diagrams for (a)
- Page 73 and 74: • Correlative-level coding (parti
- Page 75 and 76: Modified Duo-binary Signaling : •
- Page 77 and 78: • |ck|=1 : random guess in favor
- Page 79 and 80: • Produce one of M possible ampli
- Page 81 and 82: • Nyquist criterion for distortio
- Page 83 and 84: Operation of the equalizer: • squ
- Page 85 and 86: Eye Pattern: • Experimental tool
- Page 87 and 88: Information Theory ‣ Information
- Page 89 and 90: I(U) = logb = - log b P(U) Where P(
- Page 91 and 92: Equality can only be achieved if 1.
- Page 93 and 94: UNIT 4 Linear Block Codes ‣ Matri
- Page 95 and 96: • Thus, c k i1 d i a i • ai m
- Page 97 and 98: R = n - k • is often referred to
- Page 99 and 100: • This means that a codeword is v
- Page 101 and 102: c 1 (all zero) e 1 e 2 e 3 … e N
- Page 103 and 104: into message blocks of k informatio
- Page 105 and 106: ◊ ARQ is adaptive in the sense th
- Page 107 and 108: x m m m ' j j 3 j 2 j x m m m ''
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Example: Using generator matrix g
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Representing convolutional codes co
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• Problem of optimum decoding is
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The maximum likelihood path: The de
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Hamming Code Example: • H(7,4)
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Example of CRC: Example: Using gene
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Turbo Codes: • Backgound - Turbo
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Why Interleaving and Recursive Enco
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- Poor performance at very low BER.
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- 300 ms in IEEE 802.11 - Some numb
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Fast Frequency Hop Spread Spectrum
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Direct Sequence Spread Spectrum Tra
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• Consider A communicating with b
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esynthesize a version of the origin
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RAWCLI vocoder Robust Advanced Low
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• Complex valued signal • No in
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An interleaver installed between th
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B. Tech III Year II Semester Examin
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) What are the two basic types of s
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12. (a) Derive an expression for er
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18. Assignment topics Unit 1: 1. Ce
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6. Which of the following is correc
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(b) Single error correcting and dou
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8.C 9.D 10.D 11.A Unit 2 CHOOSE THE
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(b) Capacity of the channel gets do
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(d) 56 7. The output of a source is
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(c) discretely transmitted (d) with
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Unit 5 CHOOSE THE CORRECT ANSWER 1.
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(c) 3Kbps (d) 6Kbps Answers 1.A 2.A
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8 The fundamental limit on the aver
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Code No: 56026 :2: Set No. 1 II Fil
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code No: 56026 :2: Set No. 2 II Fil
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A) (Minimum Band width)/ (Transmiss
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12. to transmit the information sig
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Code No: 56026 :2: Set No. 2 II Fil
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Code No: 56026 Set No. 4 JAWAHARLAL
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A) ASK B)PSK C)FSK D)DPSK 9) Compan
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Code No: 07A5EC09 :2: Set No.2 II F
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Cont…..2 Code No: 07A5EC09 :2: Se
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c) shannons channel coading d) Shan
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Code No: 07A5EC09 :2: Set No.3 10)
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a) increase with its certainty of o
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Code No: 07A5EC09 :2: Set No.2 10)
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Code No: 07A5EC09 Set No. 4 JAWAHAR
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7. Explain about the bandwidth and
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44. Derive an expression for error
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66. Show that if g(x) is a polynomi
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86. For the convolutional encoder s
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Protocol layers and sub-topics OSI
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Baseband or passband transmission T
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23. References, Journals, websites
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22 13R11A04H7 KOMANDLA SRIKANTH RED
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16 13R11A04H1 KOMIRISHETTY AKHILA 1
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10. Tutorial class sheets UNIT-1 SA
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• The most common technique for s
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Unit 4 CORRELATIVE LEVEL CODING:
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Noisy channel coding theorem and ca
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S(f) is the signal power spectrum N
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There are many different instantiat
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ASSIGNMENT TOPICS Unit I: 1. Certai
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CLOSURE REPORT Here the closure rep