Filter Banks In Filtered Multitone Modulation System Design And Optimization Technology Research

Wireless communication has played a more and more important role in peoples' daily life with the development of semiconductor and computer technologies in recent decades, which in turn promote the rapid expansion of the wireless communication.The definition of the next generation of mobile communication is the new emphasis of research with the rapid increase in sound, image and data communications over the internet and wireless. The demand on data rate in this broadband wireless communication system will become higher and higher, which means the delay time of the delayed waves will become greater than one symbol time and a larger bandwidth is needed. So it is important to transmit data over band limited channel in a high data rate reliably.High data rate in wireless communication is limited by additive noise and the Inter-symbol Interference (ISI) owing to multi-path propagation. When the data rate is high, there is ISI because the signal duration is shorter than the channel delay spread. In conventional single-carrier modulation, the system complexity will increase greatly due to the multi-taps equalizer used in high data rate wireless communication. The effects of the ISI are negligible so long as the delay spread of the multi-path channel is significantly shorter than the duration of one transmitted symbol. So multi-carrier transmission technology can be used to overcome this limitation.Filtered Multitone (FMT) Modulation is a new multicarrier technology. In FMT system, the spectrum of each subchannel has a high level of spectral containment So the Inter-channel Interference (ICI) of FMT is negligible compared to other noise. FMT is a filter bank modulation technology, so the performances of filter bank decide the performance of system. In this thesis, we research the design and optimization design of filter bank in FMT system.In the chapter 1, the background and purpose of research efforts on FMT's application in wireless communication is introduced by making a review on characteristics of wireless mobile channel, latest research developments in wireless communications.In the chapter 2, the principle of FMT, as well as its efficient implementation, is...