Optimized Design of IIR Poly-phase Multirate Filter for Wireless Communication System
نویسنده
چکیده
In this paper, IIR polyphase filters present several interesting properties: they require a very small number of multipliers to implement, they are inherently stable and have low round off noise sensitivity and no limit cycles. Furthermore, it is possible to achieve almost linear phase designs. Pulse shaping filters have been designed and implemented by using Raised cosine filter, Nyquist filter and optimized half band filters for software defined radio (SWDR) based wireless applications. However, IIR polyphase filters enjoy most of the advantages that FIR filters have and require a very small number of multipliers to implement. Multirate IIR halfband Filter with proposed Filters to provide cost effective solution for wireless communication applications. Cost effective techniques for design of Pulse Shaping Filter have been presented to improve the computational and implementation complexity. Keywords—RRC, CDMA, ISI, GSM, HDTV
منابع مشابه
Low latency IIR digital filter design by using metaheuristic optimization algorithms
Filters are particularly important class of LTI systems. Digital filters have great impact on modern signal processing due to their programmability, reusability, and capacity to reduce noise to a satisfactory level. From the past few decades, IIR digital filter design is an important research field. Design of an IIR digital filter with desired specifications leads to a no convex optimization pr...
متن کاملClosed-Form Design of Maximally Flat IIR Half-Band Filters
Half-band (HB) filters are of great importance and are often used in multirate digital signal processing systems, filter banks and wavelets. In this paper, a new closed-form expression for the transfer function of the maximally flat (MF) infinite-impulse response (IIR) HB filters is presented. The filter coefficients are directly obtained by solving a linear system of Vandermonde equations that...
متن کاملImplementation of a low power decimation filter using 1/3-band IIR filter
This paper presents a unique design and implementation of a low power decimation filter. The designed decimation filter architecture shows how the 1/3band IIR filter and a poly-phase half-band FIR filter are used effectively for multirate multistage signal processing. The 1/3-band IIR filter is realized using six first order all-pass filters. Each filter stage is simulated using Matlab and, the...
متن کاملDesign of multirate filter banks by ℋ∞ optimization
A procedure is developed to design IIR synthesis lters in a multirate lter bank. The lters minimize thè 2-induced norm of the error system between the multirate lter bank and a desired pure time-delay system. This criterion is reduced to one of H 1 optimization, for which there is ready-made software.
متن کاملMinimax deconvolution design of multirate systems with channel noises: a unified approach
The conventional signal reconstruction problem of multirate systems with channel noises can be cast as a robust multirate deconvolution design problem. We investigate a unified minimax approach for the robust deconvolution design of multirate systems. We discuss two typical multirate systems: the multirate filter bank system and the transmultiplexer system. We consider transmission noises resul...
متن کامل