Pervasive networks

• simultaneously connected to several wireless accesstechnologies (Wi-Fi, UMTS for example) and can seamlessly move between them (handover)
• smart-radio aka cognitive radio technology to efficiently manage spectrum use and transmission power
• 4G may use OFDM , and also OFDMA.
• packet switching only (All IP)

lecture 2-18-2013

• 授課單元與授課老師
• Bats and Communication Engineering
• Examine capacity of FDMA, TDMA, and CDMA (Is TDMA of the same efficiency as FDMA?))

Bats and Communication Engineering

1. How bats find their way in the dark (Also, dolphins and toothed whales)
2. echolocation similar to radars
3. choice of carrier (low or high pitch)
4. amplitudes, Decibel (Loudness) Comparison Chart
5. pulse (cruise 10 Hz, long range; intercept 200 Hz, short range)
6. antenna (Haeckel Chiroptera.jpg)
7. duplexer (transmit/receive)
8. FM
9. velocity detection
10. interference among groups of bats

OFDM

OFDMA Technology (slides)

Spread Spectrum

Spread Spectrum, an in-depth introduction

Technology beyond 3G

From 2G, 2.5G, 3G (IMS, IP Multimedia Subsystem), 3.5G/HSDPA, to 4G

Computer Communications (IT), IP-based, WiFi (Data Comm.), VoIP

Data Services

• GSM, Circuit Switching, 9.6 (*2), 12.4(*2, HSCSD)
• GPRS, General Packet Radio Services, Packet Switching, 9.05 kbps/13.4 kbps (*1,2,3,4), speed denoted as *u*d
• EDGE, 3 times of speed of GPRS by using 8-PSK instead of binary GMSK
• 3G, 384kbps, up to 2 Mbps, uplink is 128 kbps
• 3.5G HSDPA (High Speed Downlink Packet Access) 8-10 Mbps (R5), and 20 Mbps (R6) by MIMO, uplink is 384 kbps
• 4G communication at 100 Mbit/s while moving, and 1 Gbit/s while stationary.

In general, a generation is defined by the result of technology changes over a 10-15 year time frame. Thus, 4G would refer to whatever is deployed in the 2010-2015 period, assuming 3G deployment spans the 2000-2009 period.

See

• Wikipedia 4G
• 3GPP LTE

cellular technology

Summary in slides

1. Start of the cellular technology, the need for new commercial applications of wireless

2. the bottleneck of capacity

3. Examine capacity of FDMA, TDMA, and CDMA (Is TDMA of the same efficiency as FDMA?))

• TDMA:FDMA 7(theoretically), 3(practically)
• CDMA:FDMA 40(theoretically), 10 (practically)

4. Why cellular is better than broadcast?

5. Digital wireless with TDMA, CDMA

• advanced of digital ICs
• price drop

6. Major issues with CDMA

near-far field effect

hand-off

7. and their solutions

• Power control
• soft handoff

8. Make use of dead time in telephone conversations, about 65% of the time

• variable-rate coder

reference: Chap. 1~Chap. 6, Dave Mock, the Qualcomm Equation, AMACOM, 2005

2013 春季課程: 通信理論

授課單元與授課老師

課程大綱

101-2學期時間1-78C鍾老師系上有必修科目工程數學二要教授，

因此時間1-C這段時間會與通信理論這段時間相衝突。

鍾老師的想法是，他上課的那三次，上課的時段為 1-B, 及1-DE，

網際網路應用系統設計: 智慧型手機與平板電腦的無障礙功能

網際網路應用系統設計: 智慧型手機與平板電腦的無障礙功能: 隨處可見的手機，如果能夠做為無障礙輔具， 比起昂貴的專用輔具，也算是不錯的功能。 我剛好讀了 一篇文章 ，整理各種現有的手機平板無障礙科技， 如果你周圍有聽障，肢體障礙，過動，注意力不足， 可以考慮利用智慧型手機與平板電腦的無障礙功能 過動，注意力不足: 可以關掉螢幕上部分功能...

網際網路應用系統設計: UX Magazine

網際網路應用系統設計: UX Magazine: UX Magazine an online magazine focused on user experiences selected topics Accessibility (24) Augmented Reality (12)

學員-教練 互動式AR工作協助系統

這篇paper 的概念涵蓋了學員-教練兩個角色

不僅是給學員的工作提示

思考一下，可否將就服員的即時協助也加進來

I watched "Why Mobile Apps Must Die"

Scott Jenson - Why Mobile Apps Must Die - BD Conf, Sept 2011 from Breaking Development on Vimeo.

關鍵思維

Do blogs have to die and let the FB rule?

Lecture 12/17

PageRank-Google 決定搜尋排名的關鍵技術

業界專題講座

11/26, 12/3, 12/10

請資策會專案經理客座演講。

Talk 11.05

類神經網路

Homework 10-29-2011

從ACM Accessible Computing ASSETS 2010 選出一篇文章閱讀，做成10張以內的投影片摘要，上傳到你的部落格。

繳交作業時間 11/05 11:59 am

遲交作業將無法張貼於此，請自行撰寫於你的部落格。

Hint:

你必須使用校內網址(IP)，或是藉由圖書館確認本校學生身分，方能下載全文。

請註明出處及連結，例如　Yao-Jen Chang, Shu-Ming Peng, Yan-Ru Chen, Hung-Chi Chen, Tsen-Yung Wang, Shu-Fang Chen, Autonomous Indoor Wayfinding for Individuals with Cognitive Impairments, Journal of NeuroEngineering and Rehabilitation, 7:4, September 2010

可以參考哪些製作範例(ppt)

繳交作業方式

如何做好一個簡報投影片, 請參看簡報製作原則

有問題想問老師，聯絡方式

關鍵思維

裸視3D

Orion Nebula Fly-Through
Naked-eye 3D

關鍵思維

Universal Design

Homework 10-8-2011

從ACM Accessible Computing ASSETS 2008 選出一篇文章閱讀，做成10張以內的投影片摘要，上傳到你的部落格。

繳交作業時間 10/29 11:59 am

Hint:

你必須使用校內網址(IP)，或是藉由圖書館確認本校學生身分，方能下載全文。

請註明出處及連結，例如　Yao-Jen Chang, Shu-Ming Peng, Yan-Ru Chen, Hung-Chi Chen, Tsen-Yung Wang, Shu-Fang Chen, Autonomous Indoor Wayfinding for Individuals with Cognitive Impairments, Journal of NeuroEngineering and Rehabilitation, 7:4, September 2010

可以參考哪些製作範例(ppt)

繳交作業方式

如何做好一個簡報投影片, 請參看簡報製作原則

有問題想問老師，聯絡方式