| 摘要 |
<p>The invention concerns a joint detection device for a UMTS/TDD mobile radiotelephone terminal receiver which processes a signal received with code symbols based on K CDMA codes and having travelled through a propagation channel with Lt multiple paths. The device has two channels each imposing respective Lt/2 delays (τ2l+g) and having each K filtering branches (BRk,g) correlating Lt/2 trains of delayed samples each to a respective code (ck) and to Lt/2 coefficients of estimated paths (α2l+g*) so as to obtain the sum of Lt/2 coefficients thus correlated sampled at the symbol period. Then 2K equalizing filters (FTcku,k,g) linearly equalize the 2K correlated signals depending on an associated code (cku), before being summed at the output of the two channels. As a result of the division into two channels, the degrees of freedom are sufficient for precisely cancelling interference for a finite depth of 2K equalization filters more than twice the channel duration.</p> |
