1. Roger S Cheng Professor, Dept of ECE Asso Dean, School of Engineering

2. Brief Bio Born in HK and went to the US after F.6 BS from Drexel University MS and PhD from Princeton University Assistant Professor at University of Colorado, Boulder (1991-95) Join HKUST in 1995 (16 years ago!!) Professor (ECE Dept) & Asso Dean (School of Engineering)

3. IEEE Fellow Citation For Contributions to Multiuser Communications in Wireless Systems

4. Research Achievements Over 150 publications Total Citations: Top 10 Papers: > 3600 citations Top 30 Papers: > 4500 citations H-index: 27 27 papers, each with >27 citations Patents/Patent Applications: 19

5. My Research Area Multiuser Information Theory Fundamental Theoretical Foundation for communication systems Wireless Communications Systems Code Division Multiple Access (CDMA) Technology Technology Used in 3G mobile phone systems OFDM and OFDMA Technology Technology Used in WiFi, 4G mobile communication systems MIMO Systems and Coding Technology Used in WiFi, 4G mobile communication systems Cooperative Communications Technology to be used in future wireless communications systems Decoding and receiver Design VLSI architecture for communication algorithm Technology used in implementing ICs or chips Makes Communication Possible Makes Communication Faster Makes Communication Cheaper

6. OFDMA Technology in Wireless Communication Systems Motivation: Scarce Resources in Wireless Communications: Bandwidth, Time slots, Transmit Power Need to use them effectively and efficiently OFDMA Technology: Allocate resources (time slots, frequency bands, and power level) optimally and dynamically based on the wireless channel conditions experienced by the mobiles collectively Impact: Fast and better communication quality Enable 4G wireless technology, 11n WiFi standard, etc