Electronic and Communications Engineering (EComE) Prof TS Ng Program Director

Longest history among other similar programmes in Hong Kong. One of our FOUR programmes Emphasis on electronics and communications technologies. EComE

Electronics Semiconductor materials p type n type

Diodes Transistors Electronic Devices such as

Analogue circuits Amp Amplifiers, oscillators, filters and mixers, etc

Digital Circuits Logic circuits, adders, counters, memories, micro- controllers, microprocessors and CPU, etc Adder Inverter Adder 230 million transistors

Communications Systems Model of a communications system which could be the cell phone systems, TV broadcast systems, fiber optic system, radio broadcast systems, telephone systems, WLAN systems or GPS system etc.

Fiber Optic systems Model of a simple fiber optic system Equivalent to

Fiber Optic systems (cont’d) Information is represented as optical signal sent to the fiber optic cable How does it work?

TV Broadcast System

Benefits An analogue TV channel occupies about 8MHz frequency band, but by using MPEG-2 compression technology, the same bandwidth can accommodate at least four digital standard definition TV (SDTV) programme channels or one high definition TV (HDTV) programme channel at a time. How to do this?

Radio broadcast Currently FM requires 0.3 MHz per programme By using digital techniques, the efficiency could be improved by about 17 times. How to do this?

Cellular Mobile Communications Systems 2G GSM and CDMA (IS-95) 2.5G GPRS and EDGE 3G WCDMA system 3.5G HSDPA and HPUPA How do they work?

Wireless LAN How does it work?

Global Positioning System (GPS) How does it work?

Spacecraft Voyagers Launched in Now at 9.5 billion miles from the Sun. Light (signal) takes over 13.8 hrs to reach Earth (cf the Moon is about 1.4 light sec away from Earth, the Sun is about 8.5 light minutes away). Still sending (very weak) signal back to Earth. How to receive the signal?

Large Antenna & powerful error correction coding NASA/JPL 70-meter Deep Space Station How does it work?

The robot “Phoenix” sent to Mars to investigate whether Mars is a possible habitat for life How to control the Robot?

Employment Statistics (2006) BEng(EComE)Faculty of Engineering Responses Population40449 Respondents38432 Response rate95.0%96.2% Employment Situation Further studies18.4%13.9% Full-time employed (regular)81.6%84.3% Total100.0% Salaries Maximum gross salary$20,167$40,000 Average gross salary$13,343$12,825 Minimum gross salary$10,200$7,000

Employment Statistics (2006) Salary BandsBEng(EComE)Faculty of Engineering <$10,0000.0%9.4% $10,001 to $14, %73.6% $15,000 to $19, %11.6% $20,000 to $24,9993.7%3.1% >$25,0000.0%2.2% Total100.0% Job Satisfaction Very Much7.4%8.6% Good44.4%46.7% Average37.0%36.8% Below Average7.4%7.0% Not Much3.7%1.0% Total100.0%

Employment Statistics (2006) Major Occupations BEng(EComE ) Faculty of Engineering Engineers22.6%36.0% System Analysts & Computer Programmers 29.0%17.6% Engineering Technicians0.0%2.2% Business Professional29.0%16.5% Others19.4%27.7% Total100.0%

Questions and Answers later!