We investigate Maximum Likelihood (ML) methods for blind and semi-blind estimation of multiple FIR channels. Two blind Deterministic ML (DML) strategies are presented. In the first one, we propose to modify the Iterative Quadratic ML (IQML) algorithm in order to ”denoise” it and hence obtain consistent channel estimates. The second strategy, called Pseudo-Quadratic ML (PQML), is naturally asymp...

Abstract The screw-blind riveting combines direct screwing with the blind riveting. novel joining element can be integrated into every injection-molded component like a standard screw boss without significantly increasing processing time. screw-blind-rivet (SBR) consists of connected to substrate by thin sleeve. process screw-blind-riveting divided two phases. first is screw-in phase. secured S...

This paper develops adaptive step-size blind LMS algorithms and adaptive forgetting factor blind RLS algorithms for code-aided suppression of multiple access interference (MAI) and narrowband interference (NBI) in DS/CDMA systems. These algorithms optimally adapt both the step size (forgetting factor) and the weight vector of the blind linear multiuser detector using the received measurements. ...

A blind signature scheme allows a user to obtain a signature on a given message without revealing any information about the message to the signer. The idea of blind signature was first introduced by Chaum at CRYPTO 1982. Blind signatures can be used in many applications, such as e-voting. Recently, Chakraborty and Mehta proposed a new blind signature scheme (Chakraborty-Mehta scheme) based on t...