Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can increase the downlink bit error rate (BER) performance of DS-CDMA beyond that possible with conventional rake combining in a frequency-selective fading channel. FDE requires accurate channel estimation. Recently, we proposed a pilot-assisted channel estimation (CE) based on the MMSE criterion. Using ...

In this paper, an adaptive feedback control algorithm for ANC (Active Noise Control) with leaky FeLMS (Filtered-error Least Mean Square) algorithm is proposed. A shaping function is used in the updating equation, which selects the frequency band of the noise attenuation for the ANC system. Compared with the adaptive feedback ANC structure based on traditional FxLMS (Filtered-x Least Mean Square...

An improvement of Signal-to-Interference Ratio (SIR) at the base station of a wireless communication system can be obtained using a suitable choice of an array antenna. In this paper we consider Concentric Circular Antenna Array (CCAA) which can be used for adaptive antenna systems. A new adaptive algorithm, called least mean square-least mean Square (LLMS) algorithm, has been proposed for diff...

Abstract. We study mean-square consistency, stability in the mean-square sense and meansquare convergence of drift-implicit linear multi-step methods with variable step-size for the approximation of the solution of Itô stochastic differential equations. We obtain conditions that depend on the step-size ratios and that ensure mean-square convergence for the special case of adaptive two-step Maru...

Recently, through the use of soft computing techniques fine tuning of PID controller parameters are carried out for non linear process. In this paper the Genetic Algorithm (GA) optimization technique, is successfully applied for tuning PI controller used in conical tank level process and hence to minimize the integral time absolute error (ITAE). A conical tank level process is represented as fi...

Method There have been several adaptive approaches to improve SNR without much degradation of resolution. e.g., adaptive filter based on the local statistics with 1-D and 2D linear least square error algorithm (LLSE), 2-D adaptive recursive filter, and nonlinear anisotropic filters. Since these algorithms assume a fixed template or only a few templates according to mostly 4 directions, they hav...

{ In some adaptive ltering applications, the least-mean-square (LMS) algorithm may be too computationally-and memory-intensive to implement. In this paper , we analyze two adaptive algorithms that update only a portion of the coeecients of the adaptive lter per iteration. These algorithms use decimated versions of the error and regressor signals, respectively. Simulations verify the accuracy of...

Microgrid control in isolated mode is a highly important subject area. In the present paper, a new method is used for controlling the isolated microgrids. This method was used based on the classification of the microgrids into two groups, namely fast-dynamic (battery and flywheel) and slow-dynamic (diesel generator, electrolyzer, fuel cell). For the microgrid components with fast dynamics, a se...

In wireless communication system, MIMO-OFDM has been proposed as an efficient technique for providing high date rates, low power consuming and very efficient in 3G and 4G technologies. MultipleInput Multiple-Output (MIMO) & Orthogonal Frequency-Division Multiplexing (OFDM) systems have a assuring ability to increase the capacity and performance with acceptable Bit Error Rate (BER) proportionall...