A method that includes wirelessly receiving a signal, and detecting a
start of packet (SOP) for a packet that conforms to a wireless networking
standard. The detecting from the received signal uses at least one SOP
detection criterion. In the case an SOP is detected, the method further
includes determining a plurality of metrics from the received signal, and
using at least two of the plurality of metrics to determine an initial
timing for a received packet. Different versions combine the metrics in
different ways to determine the initial timing. Also an apparatus that
includes a radio receiver to receive a signal and output a received
signal, and an SOP detector coupled to the radio receiver to detect a
start of packet (SOP) from a received signal using at least one SOP
detection criterion for a packet that conforms to a wireless networking
standard. The apparatus further includes a processing circuit coupled to
the radio receiver to determine a plurality of metrics from the received
signal, and a initial time determining circuit coupled to the SOP
detector and the processing circuit. In the case an SOP is detected, the
initial time determining circuit uses at least two of the plurality of
metrics to determine an initial timing for a received packet.