To avoid the inaccurate estimation of the active user' s number and the corresponding performance degradation, a novel POR-based User Identification Detector (UID) is proposed for the Code Division Multiple Acces ...To avoid the inaccurate estimation of the active user' s number and the corresponding performance degradation, a novel POR-based User Identification Detector (UID) is proposed for the Code Division Multiple Acces (CDMA) systems. The new detector adopts the Power of R (POR) technique and the Multiple Signal Classification (MUSIC) method, which does not require the estimation of active users' number, and obtains lower false alarm probability than the subspace-based UID in the multipath channels. However, from our analysis, increasing the order m does not improve the performance. Therefore, when m is one, the performance of the new detector is maximal.展开更多
基金This workis supported by the 863 Project of China (2003AA12331004) .
文摘To avoid the inaccurate estimation of the active user' s number and the corresponding performance degradation, a novel POR-based User Identification Detector (UID) is proposed for the Code Division Multiple Acces (CDMA) systems. The new detector adopts the Power of R (POR) technique and the Multiple Signal Classification (MUSIC) method, which does not require the estimation of active users' number, and obtains lower false alarm probability than the subspace-based UID in the multipath channels. However, from our analysis, increasing the order m does not improve the performance. Therefore, when m is one, the performance of the new detector is maximal.