Abstract: The present invention relates to wireless communication networks particularly for indoor deployment, in which there typically directly exists a rapidly changing multipath propagation environment with limited opportunities for line of sight wireless communication. The present invention provides A wireless communications network for communicating with a mobile terminal; comprising: a number of repeater points each comprising means for communicating with the mobile terminal; an access point comprising means for communicating with the repeater points; the repeater points further comprising means for relaying signals between the terminal and the access point; means for determining a quality measure of signals sent by the terminal and received by the access point via the repeater points; means for selecting one or more repeater points to relay transmission signals from the access point to the terminal, said selection based on said quality measures of the terminal signals received by the access point.

Abstract: The present invention relates to ultra wide band (UWB) applications such as radar, position tracking and communications for example Ground Penetrating Radar (GPR) and Wireless Personal Area Networking (WPANs). The present invention provides an apparatus for synchronising a receiver to a received UWB signal having a known hopping code, the apparatus comprising: means for determining a parameter of the signal in a number of time slots; means for adding the parameter associated with each time slot to a number of corresponding of time and code offset accumulators; means for determining the code and time offset accumulator having an accumulated value according to a predetermined accumulator metric as the code and time offset required to synchronise the receiver.