–Polyphase filters are becoming a very important component in the design of various filter structures due to the fact that it reduces the cost and complexity of the filter by doing the process of decimation prior to filtering which reduces the multiplications per input sample. In this paper, a review of the basic polyphase filter has been done along with calculation and comparison cost of vario...

as a new input data, the summation in (22) can be achieved by using the DIF fast DCT algorithm [6]. It is noted that the multiplication of 2 cos(-) to g (2 j + 1) in (23) depends on the indexes of polyphase filters. Hence, according to (18) and (19), we can merge the factors 2 cos( w) into the corresponding coefficients of polyphase filters, as Fig. 2 shows. Then, we can save those y multiplica...

Polyphase filters are becoming a very important component in the design of various filter structures due to the fact that it reduces the cost and complexity of the filter by doing the process of decimation prior to filtering which reduces the multiplications per input sample. In this paper, a review of the basic polyphase filter and its applications has been reviewed. KeywordsAFE, APPF, CMOS, D...

Abstract: In this paper, we propose a new method for constructing polyphase ZCZ sequences. The proposed sequences are composed of polyphase perfect sequences and polyphase unitary matrices. By this method, we can obtain polyphase ZCZ sequences which are not known yet. For example, as compared with the conventional method, quadriphase ZCZ sequences with wide zero correlation zones can be obtaine...

Abstract—We present a subband adaptive infinite-impulse response (IIR) filtering method, which is based on a polyphase decomposition of IIR filter. Motivated by the fact that the polyphase structure has benefits in terms of convergence rate and stability, we introduce the polyphase decomposition to subband IIR filtering, i.e., in each subband high order IIR filter is decomposed into polyphase I...

The central question of this paper is: can we enhance the spectral purity of nonlinear circuits by using polyphase multipath circuits? The basic idea behind polyphase multipath circuits is to split the nonlinear circuits into two or more paths and exploit phase differences between these paths to cancel undesired distortion products. It turns out that it is very well possible to use polyphase mu...

ABSTRACT Changing resolution of images is a common operation. It is also common to use simple, i.e., small interpolation kernels satisfying some ”smoothness” qualities that are determined in the spatial domain. Typical applications use linear interpolation or piecewise cubic interpolation. These are popular since the interpolation kernels are small and the results are acceptable. However, since...

The conventional polyphase pulse compression codes including Frank code, P1, P2, P3, and P4 code suffer severe signal loss in performance under Doppler environment. This paper proposed a new polyphase pulse compression codes which are conceptually derived from the step approximation of the phase curve of the hyperbolic frequency modulated chirp signal. Comparing with the above conventional code...

The technique of polyphase filterbanks is commonly used for signal processing in radio astronomy. The rapid and ongoing evolution of parallel hardware architectures requires optimised implementations of such techniques to be redeveloped. However, much of the published research regarding polyphase filterbanks refers the reader to signal processing books with a more general scope. Furthermore, th...