Abstract: A receiver for use in a wireless communication system, for example a mobile phone system, the receiver having a plurality of fingers which can each receive signals from a different propagation path and can estimate the channel coherence time for the propagation path used by signals received by the respective finger. The receiver also has filtering circuity the operation of which is altered in dependence on the estimated coherence time.

Abstract: In a data transmission method and system, user signals are transmitted wirelessly, and a maximum delay for the system has been defined. The system includes circuitry at the transmitting end for sequentially performing an outer and inner coding on the signals to be transmitted, and circuitry for performing a first interleaving after the outer coding. The interleaving length of the first interleaving is chosen within the scope of the maximum delay defined for the system. To ensure improved performance, the system includes circuitry for performing a second interleaving after the inner coding, and the interleaving length of the second interleaving is substantially equal to the interleaving length of the first interleaving.