%0 Electronic Article %A Farid Samsami Khodadad %+ Electrical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran %A Ghosheh Abed Hodtani %+ Electrical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran %K direct sequence code-division multiple-access multi-path channels %K equalisation %K blind joint estimation %K multi-input multi-output systems %K finite impulse response %K channel order %K minimum mean square error algorithm %K parametric model %X A new, reliable and computationally efficient blind method is proposed for joint estimation of channel order and number of active users in a direct sequence code-division multiple-access system with multi-path fading channel. The proposed method (i) exploits a parametric model used for equalisation of multi-path channels in finite impulse response multi-input multi-output systems, (ii) first, estimates rank of correlation matrix of observation, by combining the subspace method and information-theoretic criteria, (iii) then, estimates simultaneously channel order and number of active users, by using the estimated rank and the model parameter, without any prior information, (iv) uses only a single antenna, in contrast to the previous methods, while having the ability to jointly estimate higher numbers of active users and channel order in lower signal-to-noise ratios. Numerical results show that the proposed method can estimate higher number of users and also has higher detection probability when using minimum mean square error algorithm. %@ 1751-9675 %T Blind joint estimation of channel order and the number of active users in direct sequence code-division multiple-access multi-path channels %B IET Signal Processing %D April 2014 %V 8 %N 2 %P 158-166 %I Institution of Engineering and Technology %U https://digital-library.theiet.org/;jsessionid=fltr03ljpni6g.x-iet-live-01content/journals/10.1049/iet-spr.2012.0296 %G EN