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SNS COLLEGE OF ENGINEERING,
COIMBATORE
DEPARTMENT OF ECE
EC 6801 – WIRELESS
COMMUNICATION
STUDENTS WORKBOOK
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UNIT – 2
CELLULAR
ARCHITECTURE
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TOPIC – 1 MULTIPLE ACCESS TECHNIQUES
1. RECOGNIZE THE CHANNEL (Remember)
2. Fill the missing slots. (Understand)
3. Search the words related to CDMA
4. Compare CDMA, FDMA & TDMA (Analyze & Evaluate)
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Techniques
Parameters
TDMA FDMA CDMA
Channel usage
Narrowband system????
Synchronization bits???
Interference
Simplex / Duplex???
Power consumption
Noise
Modulation
Forward Error Correction
Bandwidth Efficiency
Source coding
Diversity
complexity
Handover
Fading
Voice and data integration
Evolution
5. What is Non Orthogonal Multiple Access (NOMA) for wireless communications?
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Write a report on NOMA and its potential use in 5G networks. (Apply & Evaluate)
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TOPIC – 2 CELLULAR CONCEPT, CHANNEL ASSIGNMENT AND HANDOFF
1. (Understand) Fill the frequency reuse channels with
any alphabets without interference
2. (Understand)
WHY?
3. Name the type of Problem______________________ (Analyze)
JUSTIFY
JUSTIFY
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4. (Analyze)
WHY?
5. (Understand)
Find the interference….
6. Unscramble the channel assignment methods (Understand)
JUSTIFY
JUSTIFY
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7. Unscramble the tiles to reveal a message. (Understand)
8. Fill the co-channel reuse ratio and N(cluster size)
CLUSTER SIZE (N) Co-CHANNEL REUSAE RATIO (Q)
i = 1, j = 1
i =1, j=2
i=2, j=2
i=1, j=3
9. Name the type of interference.
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10. See the picture and write a report on the study. (Analyze)
Hint: 1/3 frequency reuse network.
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11. From the picture given below, find the Cluster size, N and the integers i and j
Hint: Co-channel reuse ratio
12. Study on the data and write the pros and cons of fixed and dynamic channel assignment strategies. (Analyze and Evaluate)
Answer
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FIXED CHANNEL ASSIGNMENT DYNAMIC CHANNEL ASSIGNMENT PROS:
FIXED CHANNEL ASSIGNMENT DYNAMIC CHANNEL ASSIGNMENT CONS:
PROS:
DYNAMIC CHANNEL ASSIGNMENT CONS:
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TOPIC – 3 INTERFERENCE, TRUNKING & GOS, COVERAGE AND CAPACITY IMPROVEMENT
1. Find the terms related to trunking. (Remember)
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2. Match the following (Understand)
3. The co-channel interference can be reduced by the following methods. Explain the
same with justification. (Analyze and Apply)
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4.
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(Analyze and Apply)
STEPS FORMULA WORKING AREA
1.
2.
3.
4.
5.
6.
7.
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Write the key points on each branch.
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