One of the most critical problem in the asynchronous DS/CDMA reception consists of the effective acquisition of the initial pseudo-noise (PN) synchronism. In particular the multi-user interference (MUI) contrasts the operation to synchronise correctly the system. In this paper1, an adaptive PN acquisition scheme based on a statistical hypothesis testing and able to reduce the detrimental effects on acquisition process of multi-access interference present on the channel will be presented. The application considered for the proposed algorithm concerns with the transmission over an AWGN channel, performed by a DS/CDMA system. The results shown can prove the robustness of the proposed method in presence of different level of MUI, provided a reliable estimation of the channel conditions.
A Serial Acquisition Scheme Based on Statistical-Hypothesis-Testing for Asynchronous DS/CDMA Systems
Sacchi, Claudio;
2002-01-01
Abstract
One of the most critical problem in the asynchronous DS/CDMA reception consists of the effective acquisition of the initial pseudo-noise (PN) synchronism. In particular the multi-user interference (MUI) contrasts the operation to synchronise correctly the system. In this paper1, an adaptive PN acquisition scheme based on a statistical hypothesis testing and able to reduce the detrimental effects on acquisition process of multi-access interference present on the channel will be presented. The application considered for the proposed algorithm concerns with the transmission over an AWGN channel, performed by a DS/CDMA system. The results shown can prove the robustness of the proposed method in presence of different level of MUI, provided a reliable estimation of the channel conditions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
