FSLC equalization receiver for IR-UWB system in indoor environment

Ultra-wideband (UWB) is proposed to realize high-rate transfers in indoor environment. The long delay spread of UWB channel would cause excessive inter symbol interference (ISI), which results from an overlap of over dozens of symbols. Thus, ISI is a major challenge for the design of a receiver for high-rate IR-UWB system. To mitigate ISI, an all-digital fractionally spaced linear center (FSLC) equalization receiver is proposed in this paper. The receiver can simultaneously realize adaptive matched filter (MF) and adaptive equalization so as to better collects multipath signal energy and suppresses ISI. Simulation results show that the observation window length is important parameter in mitigation of ISI. Compared with fractionally spaced linear non-center (FSLNC) equalization receiver, ISI is mitigated more effectively by FSLC equalization receiver.