Patent ID: 8401487

Claim:
A method implemented in a wireless device of analyzing multi-path signals received over a wireless communication channel to characterize scattering objects in the wireless communication channel, the method comprising: receiving a reference value for each of a plurality of frequencies within a signal bandwidth at a plurality of different signal times; processing said reference values or complex propagation channel coefficients estimated therefrom to determine one of: a set of Doppler shifts of scattered wave energy and a corresponding set of complex wave amplitudes for each of multiple frequencies within the signal bandwidth, each Doppler shift corresponding to a different angle of arrival; and a set of path delays and a corresponding set of complex wave amplitudes for each of multiple signal times within an analysis interval; and processing said complex wave amplitudes to determine: a set of path delays corresponding to each angle of arrival or a set of angles of arrival corresponding to each determined path delay; and a complex scattering coefficient for each combination of path delay and angle of arrival, wherein each complex scattering coefficient corresponds to a respective scattering object in the wireless communication channel.