Before we start:

Wireless Networking:

Fundamentals and Applications

PROF. MICHAEL TSAI FALL 2011

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Before we start:

Filtering mechanism

•

We have:

• (A) The 57 registered student for this course (09/14 20:30)

• (B) Those who is not registered, and want to get “the code” to register

•

Bad news: we only have ~60 sets of boards for the lab assignments

•

Solution: a filtering mechanism

• You (each student) need to complete lab0 + hw0 by next Thursday

• The top 60 ranking students for lab0 + hw0 will be able to register for the course

• (will be announced next Friday afternoon)

• And of course, if there are less than 60, than everyone gets in! Yay!

• Important: this applies to both (A) and (B)

• Find the assignments on the course website

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Before we start:

Warnings

• First time to teach the course



you are part of the experiment.

• Be prepared to time-consuming lab assignments (10+, 20+, or 30+ hrs per assignment!)

• Will do my best to prepare the lectures,

but don’t know if they will be easy to absorb

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Course Objective

•

Learn about wireless communications and networks

• Why is it so different from wired communications and networks?

• Wireless communications = lots of random errors, less reliable

• Learn the basics about wireless

• How to model the wireless channel

• How to model the wireless system

• Protocol designs (MAC & routing)

• Learn some of the most important wireless standards

• Cellular Technology (GSM/3G/4G/CDMA),

• WiFi (802.11 a/b/g/n),

• Wireless Sensor Networks, etc.

•

See the course outline on the course website

(這就是課程大綱…我有在課程一開始的時候說喔 ~~~)

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Hands-on Experience

• 4 lab assignments

• Completed by teams of 3 or 2

• Goal:

• Learn from your own experience (1^st hand)

• Not from the lectures/the books (2^nd hand)

• Fun!

• Cons: need to spend lots of time ( 20+ hrs per assignment, on average)

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Prerequisite

• I would like to say….NONE,

• but the truth is…

• Just a few ones on the list:

• You know the C programming language

• Good at using Google to look for answers (not kidding, very important)

• Some basic knowledge about probability & calculus (basic is the key word)

• You are really interested in wireless communications & networks

• Optional, but good to have:

• You have taken “Computer Networks”

• You have taken “Data structure” and/or “Algorithm”

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Lab platform:

Zigduino + nano-RK

• Microcontroller: Atmega128RFA1

• On-chip integrated IEEE 802.15.4 radio

• 2.4 GHz

• 250 Kb/s

• External antenna connector (RP-SMA)

• Various I/O pins for you to connect to other components (LED/light sensor/openlog)

• A fully preemptive reservation-based real-time operating system

• Designed for wireless sensor networks

• Developed by Carnegie Mellon University

• Supports fixed-priority preemptive multitasking

• http://nanork.org

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Lab1: Miniature Spectrum Analyzer

Openlog: miniSD logger +

Zigduino

How does different wireless device occupy the spectrum?

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Lab2: Indoor

Localization System

Fixed Beacon Fixed Beacon

Fixed Beacon Fixed Beacon

Fixed Beacon Fixed Beacon

Where am I ?

Received Signal Strength Indicator (RSSI)

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Lab2: Indoor

Localization System

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Lab3: Whack-a-Mole

Mole

Mole

Mole

Master controller

LED: ON means that the mole is UP

Light sensor: cover the light == whacking

UI to start/stop the game, show the score

Coordinate the “moles”

to jump up and down via

the wireless links.

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Lab4 (final project):

Smart wireless network competition

Source Destination

Controlled by us Controlled by us

Zigduino boards installed in the CSIE building

Goal: develop your own MAC/routing protocols so that you relay the most packets correctly and with the shortest delay from

the source to the destination (could be more than 1 pair). 1 2

Course grade

Items Weight

Lab assignments:

lab1 10%

lab2 15%

lab3 15%

lab4 (final project) 30%

Homeworks (handwritten): (2) 20%

In-class quiz: (don’t know how many yet) 10%

• We will decide the mapping from 100% score to the letter grade at the end of the semester

• Since this is not a required course, the general idea is that we will be generous given that you submitted all assignments.

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Textbook (optional to buy)

Andrea F. Moilsch, Wireless Communications, 2^nd Edition, Wiley + IEEE, 2011

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Some references

Andrea Goldsmith, Wireless Communications, Cambridge University Press, 2005

Theodore S. Rappaport, Wireless Communications:

Principles and Practice, 2^ndEdition, 2002

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The teaching team

林浩民 (阿民)

黃光世 (阿光)

邱柏睿 (Ray)

Teaching Assistants

蔡欣穆 (Michael) Office hour:

Mondays 2-3pm @ CSIE R316

Office hour: To Be Assigned

E-mail: wn@csie.ntu.edu.tw ptt2: HsinMu

Direct your questions to:

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Zero-tolerance policy (Plagiarism)

•

We will NOT tolerate any PLAGIARISM (Quiz/Lab/Homework).

•

Students who gets caught will get an F , no second chance.

(+ possible university disciplinary actions)

•

The TA’s will look for

• (1) signs of copied codes in your lab assignment source codes

• (2) similar answers in the handwritten homeworks

•

For handwritten homework, please indicate references for each problem

• Books or Internet URL or a person.

• If none, then indicate “none”.

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Zero-tolerance policy (assignment deadline)

• Homework deadline is HARD deadline.

• You get

0

• You get

0

• However, we will still grade it for you, if you choose to submit it (after the deadline)

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My teaching style

• Interactions in the class

• Please please please please ask me questions

• (Or I will ask you questions…)

• No question is dumb question

• (Since lots of you have very little background knowledge)

• Class material is easy to understand

• But lab & homework assignments require lots of efforts

• English slides but taught in Mandarin

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Recap

• Submit your lab0 AND hw0 by next Thursday (or you will not be admitted to this course)

• wn@csie.ntu.edu.tw is the e-mail to us

• Course website:

http://www.csie.ntu.edu.tw/~hsinmu/courses/wn_11fall

• Feel free to come and talk to me after the class or during the office hour

• Questions?

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