Title :
Soft-Handoff Strategies for MB-OFDM Systems
Author :
Li, Xiu-Sheng ; Tsai, Yuh-Ren
Author_Institution :
Inst. of Commun. Eng., Nat. Tsing Hua Univ., Hsinchu
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.
Keywords :
OFDM modulation; filtering theory; personal area networks; ultra wideband communication; DynamicFilter receiving scheme; FixedFilter receiving scheme; MB-OFDM systems; multi-band OFDM UWB system; piconet handoff; soft-handoff strategies; user mobility; wireless personal area networks; Analytical models; Diversity reception; OFDM; Performance analysis; Performance gain; Personal area networks; Space time codes; System performance; Time division multiple access; Wireless personal area networks;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.559
