In this paper, a linear phase FIR filter is designed through recently proposed nature inspired optimization algorithm known as Cuckoo search (CS). A comparative study of (CS), particle swarm (PSO) and artificial bee colony (ABC) methods in the field design also presented. For purpose, an improved L1 weighted error function formulated frequency domain, minimized CS, PSO ABC respectively. The or objective has controlling parameter wt which controls amount ripple desired band frequency....

This paper presents a new efficient method for implementing the Hilbert transform using an all-pass filter, based on fractional derivatives (FDs) and swarm optimization. In proposed method, squared error difference between desired designed responses of filter is minimized. FDs are introduced to achieve higher accuracy at reference frequency ( ω0 ), which helps reduce overall phase error. this paper, two approaches used finding appropriate values frequencies. first approach, these estimated...

In this work, a hybrid method-based design of multiplierless two-channel filter bank has been proposed with given stopband attenuation (As) and roll-off factor. Windowing method used for efficient prototype novelty exploiting quantised coefficients in canonical sign digit (CSD) factorised (FCSD) space by merging the concept particle swarm optimisation artificial bee colony algorithm. The are optimised varying cut-off frequency such that magnitude response is approximately reduced to 0.707 at...

In two recent contributions, minimization of number adders in realization digital finite impulse response (FIR) filter has been discussed. The proposed method extends the concept these techniques to further reduce requirement FIR for different applications. This paper is based on merging concepts involved vertical and horizontal common sub-expression elimination (CSE) delineated designing a that achieves adequate characteristics with minimum adders.

In this paper, we have proposed a novel approach using Fuzzy Logic System (FLS) for the potential management of spectrum access.We used four descriptors such as utilization efficiency secondary user, mobility, distance primary and signal strengths users.On basis these descriptors, there are 81 fuzzy rules been setup, which based on linguistic knowledge.The output FLS provide possibility accessing band users user with greatest has to assigned available band.

This paper presents a simple and efficient design technique for two-channel multiplier less filterbank using common sub-expression elimination (CSE) algorithm given stop-band attenuation (A <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> ) channel overlapping. Novelty of this lies in the unique utilization cuckoo search exploiting both quantized coefficients canonical sign digit (CSD) converted such that magnitude response prototype...

In this paper, an optimal design technique for M-channel multiplierless cosine modulated filterbank (CMFB) is proposed using common sub-expression (CSE) and hybrid method with given roll-off factor (RF) stopband attenuation (A <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> ). The key feature of the utilization single optimization algorithm to generate quantized canonic signed digit (CSD) converted coefficients that satisfy magnitude...

Summary Perfect detection of unused/underutilized frequency band the primary user (PU) in cognitive radio communication systems is an essential component for its efficient utilization by secondary/cognitive (CU) without any interference. In cooperative spectrum sensing scenario, presence or absence PU determined analyzing decisions each CU engaged collaboration. this paper, we have emphasized on significance duration optimal threshold selection approach scenarios a range received signal...

This paper presents an efficient design method for a digital multiplierless two-channel filterbank using the shifted-Chebyshev polynomials and common sub-expression elimination (CSE) algorithm reducing hardware requirements such as adders multipliers. For designing filterbank, problem is constructed minimization of integral mean square error between desired designed response prototype filter in passband stopband. controlling performance stopband, two parameters (KP, KS) are used, whose...

In this paper, a comparative study of binary and CSD representation forms on filter coefficients has been presented for acute justification their selection designing multiplierless finite impulse response (FIR) filter. For purpose, well-known computationally efficient nature-inspired cuckoo search optimization algorithm (CSA) is exploited perspective. An objective function constructed to minimize the mean square error designed its ideal response, it observed that least number adders signed...