Prior to CSR, he was Chief Technical Officer of Alereon, an ultrawideband radio company. He is heavily involved in a number of standards, trade group and regulatory activities; he was formerly the co-chair of 802.15.3a (high speed UWB) as well as former chair of 802.19 (Wireless Coexistence Technical Advisory Group) within IEEE 802, and was also a significant contributor to 802.15.2 and 802.11g. He was also one of the developers of Adaptive Frequency Hopping for Bluetooth and led Alereon's UWB cognitive radio development.