1. FLIPPED CLASSROOM ACTIVITY CONSTRUCTOR – USING EXISTING CONTENT
PRIYA SBM
JJCET,TRICHY

2. Table of Contents SECTION SLIDE # 5 26 ABOUT YOU 3
OUT-OF-CLASS SEGMENT 5
EVALUATION OUT-OF-CLASS 15
IN-CLASS SEGMENT 16
EVALUATION IN-CLASS 26

3. About you
I am Priya SBM working as Asst.Prof. in ECE department at JJ College of Engineering and Technology, Trichy, TamilNadu.
My area of specialization is Wireless Communication, Digital Communication, Digital Signal Processing, Wireless Networks
In this worksheet, I am about to teach you the Equalization in Wireless Communication.

4. IV Year BE and I year ME (Communication Systems) Students
S B M PRIYA
Equalization
Wireless Communication
Communication Systems
IV Year BE and I year ME (Communication Systems) Students
JJ College of Engineering and Technology

5. Out-of-class Activity Design-1
Learning Objective(s) of Out-of-Class Activity
After listening the video, the student could able to
Recollect the propagation mechanisms in wireless channel(Recall Level)
Explain the importance of Equalizers and adaptive equalizer for a wireless scenario (Understand Level)
Mapping suitable equalizer for the given wireless channel scenario (Understand Level)
Design a Equalizer for the given wireless scenario (Apply Level)
Key Concept(s) to be covered
Equalizers , Adaptive Equalizers , Equalizer Algorithms

6. Out-of-class Activity Design - 2
Main Video Source URL
License of Video
CC-BY-SA (reuse allowed), NPTEL
Mapping Concept to Video Source
CONCEPT
VIDEO SEGMENT
DURATION
(in min)
Adaptive Equalizer
V1 - 0:00 – 7.20
7.20
Generic Adaptive Equalizer
V2 – 7.21– 12.57
5.36
Survey of Equalization Techniques
V3 – 13:00 – 20.12
7.12
Linear Equalizers
V4 –
7.57
V5 –
6.10
Non Linear Equalizers
V6 –
7.13
V7–
3.01
For Video, Click on the hyperlink (V1,V2, V3,…) individually and listen to the lectures. Do the assessment given in next slides
TOTAL DURATION
44.35 min

7. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
Recollect the propagation mechanisms in wireless channel
Q1. Differentiate Fast and Slow fading.
Q2. What is the roll of doppler spread in a channel?
3 minutes
Watch V1 and then answer Q1 Q2

8. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
The importance of Equalizers and adaptive equalizer for a wireless scenario
Q3. What will happen while equalizing the frequency selective channel?
Q4. If h(t) is the channel response and heq(t) is the equalizer response, then write down the ideal relation between them.
5 minutes
Watch V1 and then answer Q3 and Q4

9. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
The importance of Equalizers and adaptive equalizer for a wireless scenario
Q5. Adaptive Filter is modeled to be a filter
Q6. Which parameter decide the number of taps and delay elements in Adaptive Equalizer.
2 minutes
Watch V2 and then answer Q5 and Q6

10. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
The importance of Equalizers and adaptive equalizer for a wireless scenario
Q7. What is the controlling parameter in Adaptive equalizer?
Q8. What are the possible structures in linear and non linear equalizers?
3 minute
Watch V3 and then answer Q7 and Q8

11. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
The importance of Equalizers and adaptive equalizer for a wireless scenario
Q9. Equalizer with feed forward and feedback filter are known as
Q10. Write down the expression for transversal filter output.
2 minutes
Watch V4 and then answer Q9 and Q10

12. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
The importance of Equalizers and adaptive equalizer for a wireless scenario
Q11. What are the advantages of lattice filter
Q12. Write down the filters available in DFE
Q13. Write down the need of non-linear equalizer
Q14. What is the optimal equalizer in NLE.
5 minutes
Watch V5 and then answer Q11 Watch V6 and answer Q12, Q13
Watch V7 and answer Q14.

13. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
Mapping equalizer to given wireless scenario
Q15. For a frequency selective, highly faded channel identify the equalizer which can produce maximum probability of output
Q16. If the channel is slowly fading, what will be the equalizer suitable for the given environment.
5 minutes
Answer the questions Q15 and Q16 after assimilating the video concepts (V1- V7).

14. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
Design an equalizer for the given wireless scenario.
Q17. Design a linear equalizer with 5 tap and 5 delay element using transversal structure.
5 minutes
Submit your answer on or before 5th October, 2017.
Total activity duration
30 minutes

15. Evaluation of Out-of-Class Activity
The questions from Q1-Q16 hold 1 mark each. The question Q17 holds 4 marks. TOTAL MARKS = 20
Announcement : The marks secured by students will be added with the 3rd assessment test (Out of 10Marks) In addition, 1 Lecture Hour will be awarded after the completion of Assignment Submission.

16. In-class Activity Design -1
Learning Objective(s) of In-Class Activity
At the end of the class, students will be able to,
Design a equalizer for the given wireless scenario(ANALYZE Level)
Identifying the key characteristics of equalizer. (ANALYZE Level)
Key Concept(s) to be covered
Equalizer design
Equalizer characteristics.

17. In-class Activity Design -2
Active Learning activities that I have planned to do Real world problem solving using. Concept clarification using.
Think-Pair-Share
Peer Instruction

18. In-class Activity Design -2
Peer Instruction Strategy – What Teacher Does
Q 1: If the time delay spread is increasing then the number of taps and delay element will be
Increasing
Decreasing
Time delay has no significance in tap count
Number of taps are constant always.

19. In-class Activity Design -2
Peer Instruction Strategy – What Teacher Does
 Q 2: The equalizer which is optimum for flat faded channel is
a) Decision Feedback Equalizer
b) Non Linear Equalizer
c) Maximum Likelihood sequence Estimator
d) Transversal Linear Equalizer

20. In-class Activity Design -2
Peer Instruction Strategy – What Student Does
For each question they will first vote individually.
Then they will discuss with peers and come to consensus.
Listen to instructors explanation.

21. In-class Activity Design -2
Think Pair Share Strategy – What Instructor does
Design a four-tap linear equalizer such that the equalizer output in the absence of noise is given as

22. In-class Activity Design -2
Think Pair Share Strategy – What Instructor does
Think (~3 minutes)
Instruction: Recall the different structure of linear equalizer. Think individually and draw the equalizer structure after solving the equation.

23. In-class Activity Design -2
Think Pair Share Strategy – What Instructor does
Pair (~5 minutes)
Instruction: Now pair up and compare your answers. Agree on one final answer.
While students are pairing and discussing, instructor goes to 2~3 sections to see
what they are doing.
Expand the equalizer output and decide whether transversal/lattice structure is suitable for the given output

24. In-class Activity Design -2
Think Pair Share Strategy – What Instructor does
Share (~10 minutes)
Instructor asks a group to share their answer with class and see whether there are different answers. After sharing is done, instructor gives feedback on the correct solution and how the equalizer design can be finalized based upon the given expression.

25. In-class Activity Design -2
Justify why the above is an active learning strategy
In both the methods, the students think and assimilate the contents after they have learnt in their out - class activity.
Hence the participation of students in class is high and it motivates higher order thinking level.
In TPS activity’s pair and share phase the students share their views and observe other’s perceptions. This clarifies students doubts.

26. Evaluation of In-Class Activity
Announcement : Students those who have actively participated in In-Class Activity will be credited by 5 Marks to Internal Marks