Adaptive unbiased least square (LS) algorithm for mitigating interference for CDMA down link and other applications
AssigneeBroadcom Corporation
InventorsNing Kong, Francis Swarts, Michiel Petrus Lotter, Nelson R. Sollenberger, Mark Kent
Life of this patent
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Abstract
A multipath wireless communication is processed to recover a transmitted data signal without performing a direct matrix inversion (DMI). First, the multipath wireless communication is received. Then HHH and HHH values associated with the multipath wireless communication are determined. Weights based on HHH and HHH associated with the received data signal may then be determined and used to recover the transmitted data signal from the received multipath wireless communication.
Claims25
A method to determine weights used to recover a transmitted data signal subject to inter-symbol interference without performing a direct matrix inversion, the method comprising:
- receiving a data signal subject to inter-symbol interference;
- determining HHH and HHH associated with the received data signal, wherein H is the channel matrix;
- determining the weights based on HHH and HHH associated with the received data signal, wherein the weights are equalizer coefficients;
- and
- recovering the transmitted data signal from the received data signal using the determined weights.
A receiver operable to recover a transmitted data signal subject to inter-symbol interference without performing a direct matrix inversion, the receiver comprising:
- an antenna element operable to receive a data signal subject to inter-symbol interference;
- a processing module operable to:
- determine HHH and HHH associated with the received data signal;
- determine the weights based on HHH and HHH associated with the received data signal;
- and
- recover the transmitted data signal from the received data signal using the determined weights.
A method of processing a multipath wireless communication, comprising:
- receiving the multipath wireless communication, wherein a number of diversity branches, L, are associated with the received multipath wireless communication;
- determining HHH and HHH associated with the multipath wireless communication;
- determining weights based on HHH and HHH associated with the received data signal;
- and
- recovering the transmitted data signal from the received data signal using the determined weights.
Dependencies are inferred from the claim text.