Prior assignments include
- one year researcher at Bell Laboratories, Lucent Technologies in Swindon, U.K. (mobile wireless communications, GSM, UMTS)
- 5 years as researcher at Bell Laboratories in Holmdel, New Jersey, U.S.A. (channel coding and signal detection for multiple antenna communications)
- 7 years at Realtek Semiconductor Corp. in Irvine, California, U.S.A., as director of wireless ASIC development (WLAN, UWB baseband)
- 3 years at Bell Laboratories, Alcatel-Lucent in Stuttgart, Germany, as department head in wireless physical layer research (signal processing and channel coding for wireless and optical communication systems; LTE, long-haul)
The common theme across his appointments is in digital modem design, particularly signal processing and channel coding for communications, for improving data rate, receiver sensitivity, and power efficiency.
He is member of the VDE/ITG, and active in the IEEE Communications and Information Theory Society. He is an IEEE Fellow.