The problem of asynchronous direct-sequence code-division multiple-access (DS-CDMA) detection over the ultra-wideband (UWB) multipath channel is considered. A joint synchronization, channel-estimation, and multiuser detection scheme based on the adaptive linear minimum mean square error (LMMSE) receiver is presented and evaluated. Further, a novel nonrecursive least-squares algorithm capable of...

This paper addresses the optimal filtering problem for systems with unknown inputs from the viewpoint of recursive least-squares estimation. The solution to the least-squares problem yields filter equations in information form. The relation between these filter equations and existing results is discussed. Finally, by establishing duality relations to the Kalman filter equations, a square-root i...

A new update algorithm for space–time equalization of wireless time-division multiple access signals is presented. The method is based on a modified QR factorization that reduces the computational complexity of the traditional QR-decomposition based recursive least squares method and maintains numerical stability. Square roots operations are avoided due to the use of an approximately orthogonal...

This paper proposes an identification scheme for a complex liquid effluent incinerator process. This scheme is developed to obtain a MIMO (Multiple Input Single Output) TS (Takagi-Sugeno) fuzzy model where the modified Gath Geva clustering algorithm is used to determine the antecedent part as the consequent parameters are estimated by RLS (Recursive Least Square) algorithm.

This article describes a parallel algorithm for solving the Recursive Least Squares (RLS) problem. It is based on a variant of the Kalman Filter named the square root and extended version Information Filter. This algorithm is suitable to be implemented as either a distributed memory or a shared memory or a mixed parallel algorithm and is oriented to be used in real time applications.

Article history: Available online 4 January 2010

one of the most valuable and important application of artificial satellites in geodetic sciences is recovery of the earth's gravity field. orbits of satellites either gravimetric or nongravimetric are analyzed to improve the earth's gravity field. gravimetric satellites are launched at low altitudes to observe gravity field in more detail. grace twin satellites are the second spacecra...

results the results revealed that metal urine concentration in welders was higher than controls but only the difference in chromium concentration was significant (p < 0.002). in the range of metals exposure, induction of oxidative stress for exposed group was observed by increase in urine mda (11.17 ± 4.23 and 4.83 ± 1.82 mm in welders and controls, respectively; p < 0.01). information of the m...