A wireless receiver for receiving a signal transmitted by a transmitter, the receiver comprising: a plurality of antennas each for receiving a version of the signal via a different propagation channel corresponding to a respective diversity channel and providing that version at a respective input; signal processing means configured to operate diversity processing of a supplied number of said inputs for use in performing detection of said signal; channel parameter estimation means configured to estimate one or more channel parameters on the diversity channels, wherein said channel parameter estimation means is configured to: estimate a signal-to-disturbance ratio of each of said channels; and determine a correlation between at least one pair of diversity channels; or determine a disturbance correlation between at least one pair of associated diversity branches; selection means configured to select only a subset of said inputs to implement a specific dimensionality of the receiver diversity processing, in dependence on the one or more channel parameters indicative of channel conditions on said diversity channels; and means for comparing the signal-to-disturbance ratio to a threshold, wherein if the signal-to-disturbance ratio is greater than a first threshold, the selection means selects the subset of inputs based on a correlation between at least one pair of diversity channels. a plurality of antennas each for receiving a version of the signal via a different propagation channel corresponding to a respective diversity channel and providing that version at a respective input; signal processing means configured to operate diversity processing of a supplied number of said inputs for use in performing detection of said signal; channel parameter estimation means configured to estimate one or more channel parameters on the diversity channels, wherein said channel parameter estimation means is configured to: estimate a signal-to-disturbance ratio of each of said channels; and determine a correlation between at least one pair of diversity channels; or determine a disturbance correlation between at least one pair of associated diversity branches; selection means configured to select only a subset of said inputs to implement a specific dimensionality of the receiver diversity processing, in dependence on the one or more channel parameters indicative of channel conditions on said diversity channels; and means for comparing the signal-to-disturbance ratio to a threshold, wherein if the signal-to-disturbance ratio is greater than a first threshold, the selection means selects the subset of inputs based on a correlation between at least one pair of diversity channels. estimate a signal-to-disturbance ratio of each of said channels; and determine a correlation between at least one pair of diversity channels; or determine a disturbance correlation between at least one pair of associated diversity branches; selection means configured to select only a subset of said inputs to implement a specific dimensionality of the receiver diversity processing, in dependence on the one or more channel parameters indicative of channel conditions on said diversity channels; and means for comparing the signal-to-disturbance ratio to a threshold, wherein if the signal-to-disturbance ratio is greater than a first threshold, the selection means selects the subset of inputs based on a correlation between at least one pair of diversity channels.