Multi-user detection using hidden training sequence for DS-CDMA UWB system

In this paper, we propose a multi-user detection scheme using a hidden training sequence. The hidden training sequence, which uses a fraction of the informative sequence´s transmitting power as a training sequence, was utilized for the receiver adaptation. The proposed detection scheme is applied to the DS-CDMA UWB system considered strongly as a physical solution for the IEEE 802.15.3a standard and we analyzed the BER performance of the proposed scheme. From simulation results using the IEEE 802.15.3a NLOS UWB channel model we verify that the proposed scheme shows reasonably good performance and near-far resistance in single and multi-user environment.