Abstract
Multi-band OFDM (MB-OFDM) UWB system was proposed for the applications of wireless personal area networks (WPANs). If the user mobility is concerned, handoff from a piconet to neighboring piconets is unavoidable. There are only few works considering soft handoff in OFDM systems. In this work, a novel soft handoff strategy for the MB-OFDM system is proposed. The system performance is analyzed and simulations are performed. Two receiving schemes, FixedFilter and DynamicFilter, are considered. Both FixedFilter and DynamicFilter improve the system performance. DynamicFilter is a little more complicated, but it provides larger performance gain. Finally, soft handoff can be achieved in the MB-OFDM system. © 2007 IEEE.