Monitoring a communication line is significant for broadband, mobile phone and so on. In this paper, we propose a new method for detecting a fault point of communication line by use of M-sequence correlation technique. In this method, detecting signal is used as one or plural M-sequences ( same characteristic polynomial, including normal and reverse mark, synchronized ). At receiving tap, we ma...

In DS CDMA systems the probability of error for each user depends on the crosscorrelation between the spreading sequences and on the received energies of all users. Thus even Maximum Likelihood joint detection might in general have a large loss compared to one user transmission. Choosing the individual error correcting codes of all users in a suitable way reduces this loss for given crosscorrel...

Abstract: This paper proposes a network architecture to compute on-line the temporal crosscorrelation function between two signals, either stationary or locally stationary. We show that the weights of a multi-FIR (Finite Impulse Response) filter trained with a teacher forcing anti-Hebbian rule encode the crosscorrelation function between the input and the desired response. We extend this networ...

In the last decade many variants of well-known notion an optical orthogonal code (OOC) have been studied. particular, it was allowed to variable weights and that codewords different weight may autocorrelation parameters so one should speak 'autocorrelation function' rather than parameter'. this paper we investigate OOCs with two 4 5, function values in $ \{1, 2\} $, crosscorrelation parameter o...

Kumar et al.(1985) have extended the notion of classical bent Boolean functions in the generalized setup on Zq . They have provided an analogue of classical Maiorana-McFarland type bent functions. In this paper, we study the crosscorrelation of a subclass of such generalized MaioranaMcFarland (GMMF) type bent functions. We provide a construction of quaternary (q = 4) bent functions on n + 1 var...