We present a detailed theoretical analysis on the quantum efficiency of a resonant cavity enhanced ~RCE! GaAs homojunction work function internal photoemission far-infrared ~FIR! detector. The quantum efficiency under both resonant and nonresonant conditions has been calculated. All the detector parameters are optimized under the realistically nonresonant condition. The further investigation of...

This study presents an architectural approach to the design of Low Area and high speed linear phase Finite Impulse Response (FIR) digital filter. FIR digital filters are used in DSP by the virtue of its, linear phase, fewer finite precision error, stability and efficient implementation. In the proposed architecture, we are introduced five parallel linear phase fir filter to obtain the high spee...

The essence of finite impulse response (FIR) digital filter design is the problem of the parameter optimization. Namely the optimal parameters of FIR digital filter are the core of the design. In due to the traditional design method of FIR digital filter is not only accuracy not high but also sideband frequency is difficult to determine. Improve Weight Particle Swarm Optimization (IWPSO) to des...

Finite impulse response filter holds important part in DSP designs. Multi-rate FIR filters specially are the integral part of the various DSP applications like speech coding, audio compression, image processing and others. In VLSI designs, especially nowadays, in SOC designs, requires efficient implementation of FIR filter. Fixed point FIR filter design is the challenging task in ASIC designs. ...

This paper designs the recursive least-squares (RLS) Wiener finite impulse response (FIR) predictor and filter, based on the innovation approach, in linear discrete-time stochastic systems. It is assumed that the signal is observed with additive white noise and the signal process is uncorrelated with the observation noise process. This paper also presents the recursive algorithms for the estima...

We present an interval arithmetic neural network based on the FIR (Finite Impulse Response) network to improve the prediction power and flexibility. The model for the system is obtained by modifying the dynamics of the FIR network to incorporate the interval arithmetic operations. In this paper, we describe the network architecture and behavior of the interval arithmetic FIR network. We present...

In recent days filters with large lengths are started to use. So parallel processing is essential at any cost.In this paper proposes new parallel FIR filter structures, which are beneficial to symmetric coefficients in terms of the hardware cost, under the condition that the number of taps is a multiple of 2 or 3. The proposed parallel FIR structures use symmetric property to reducing half the ...

A feedforward control algorithm for active noise control based on the recursive estimation of a generalized finite impulse response (FIR) filter is presented in this paper. The feedforward control algorithm is applied to a commercial air ventilation silencer to provide active noise compensation in an airduct. A generalized FIR filter has the same linear parameter structure as a taped delay FIR ...

Real-time digital signal processing applications are everywhere. The most essential part of these applications are FIR filters. For these systems to achieve the realtime demands it is essential that filtering executes as fast as possible. For systems with sever constraints limited resources, low power consumption – stronger hardware is not a solution. The solution is to evaluate FIR filter algo...

Methanolic extracts of rice hulls with or without far infrared (FIR) irradiation were sequentially fractionated with solvents (hexane, chloroform, ethyl acetate, butanol, and water), and antioxidant activities of the fractions were analyzed for total phenol contents (TPC), 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging capability, reducing power, and antioxidant potency. Yield of chlor...