Ultra-Wideband MB-OFDM Channel Estimation with Pilots

Multi-band orthogonal frequency division multiplexing (MB-OFDM) is a suitable solution to implementation of high speed data transmission in ultra wideband (UWB) spectrum by dividing the spectrum available into multiple bands. MB-OFDM system structure and transmitted signal is introduced in this paper. Channel models are fundamental to the study and design of communication systems. A survey on indoor wireless channels for UWB radio is given and the IEEE 802.15.3a model for UWB channel models is introduced in detail in this paper. The least square (LS ) channel estimation based on comb type pilot and linearity insertion are described and some simulation results is given in this paper. The simulation results have shown that this method has good performance, can meet the demand of MB-OFDM system with high estimation precision, strong resistance to ICI and easy realization.