IIR Type Of Pulse Shaping Filter And Blind Channel Identification

How to reduce the Intersymbol Interference (ISI) is one of the significant contents in digital communication system. Pulse Shaping Filter and blind channel identification are two of the most important parts in this field and many researchers have paid lots of attention to them. However, the Finite Impulse Response (FIR) digital filter, which used as a Pulse Shaping Filter popularly at present, has the disadvantages such as high orders. So we present a new approach to design the Hilbert transfer filter, whose basic unit is general parameter filter.This paper has been divided into three parts. Part 1, the basic theories of multirate digital signal processing and digital filter banks have been reviewed. On the basis of Part 1,Part 2 -general parameter filter introduced. Part 3 Hilbert transfer filter theory is introduced,Using the IIR general parameter filter which can consider the phase character as the unit of orthogonal filter banks, we present a new method for designing IIR pulse shaping filter. After this we design the Hilbert transfer filter with the guidance of the professor Liu Zemin. To prove this theory's facility, the simulation results are given next.