TY - JOUR AU - Rouijel, Awatif AU - Minaoui, Khalid AU - Comon, Pierre AU - Aboutajdine, Driss PY - 2014 DA - 2014/08/15 TI - CP decomposition approach to blind separation for DS-CDMA system using a new performance index JO - EURASIP Journal on Advances in Signal Processing SP - 128 VL - 2014 IS - 1 AB - In this paper, we present a canonical polyadic (CP) tensor decomposition isolating the scaling matrix. This has two major implications: (i) the problem conditioning shows up explicitly and could be controlled through a constraint on the so-called coherences and (ii) a performance criterion concerning the factor matrices can be exactly calculated and is more realistic than performance metrics used in the literature. Two new algorithms optimizing the CP decomposition based on gradient descent are proposed. This decomposition is illustrated by an application to direct-sequence code division multiplexing access (DS-CDMA) systems; computer simulations are provided and demonstrate the good behavior of these algorithms, compared to others in the literature. SN - 1687-6180 UR - https://doi.org/10.1186/1687-6180-2014-128 DO - 10.1186/1687-6180-2014-128 ID - Rouijel2014 ER -