Patent ID: 8379696

Claim:
A wireless transmit/receive unit (WTRU) comprising: circuitry configured to switch from a deselected operating mode to a selected operating mode on a condition that predetermined criteria are met, wherein the switching is between a first operating mode and a second operating mode, and stopping operations performed by circuitry associated with the deselected operating mode to conserve power; a multiplier configured to produce a receiver output vector based on the selected operating mode; and a receiver configured to determine whether the predetermined criteria are met to switch from the first operating mode to the second operating mode, wherein the receiver is further configured to receive a signal to noise ratio (SIR) input, an indication of aggressiveness of the received transmission, a delay spread estimate, and a remaining battery energy indication, from which the predetermined criteria are selected, wherein the first and second operating modes are selected from a group consisting of an equalizer mode and a matched filter (MF) mode.