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US 2006/0234662 A1Published application
Low complexity equalizer for radio receiver
AssigneeKoninklijke Phlips Electronics N.V.
InventorRomain Diloisy
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AssigneeKoninklijke Phlips Electronics N.V.
InventorRomain Diloisy
Estimating the term…
A diversity receiver (60) has two diverse channels fed by the antennas, an adaptive equalizer (20,30) for each channel and a coefficient adapter (40) for adapting two sets of coefficients in a time shared manner for the equalizers. A combiner combines the equalized signals. By sharing one adapter for adapting the coefficients between two or more equalizers, the calculation load can be reduced. This is useful for small mobile terminals powered by battery, for use with GSM or UMTS or other radio networks. It can be applied to any type of equalizer, and using any manner of time sharing. The combiner can exploit any type of diversity between the equalized signals. The equalizers can output two equalized signal values in consecutive time slots, by reusing the same coefficients, while new coefficients are being calculated.
A receiver (60) for use with one or more antennas (1,2,100), the receiver having:
The receiver of any preceding claim, the adapter being arranged to use a linear algorithm.
The receiver of any preceding claim, the adapter having an input of feedback from the combined equalized signal.
The receiver of any preceding claim the adapter being arranged to use the signal to be equalized and an estimated wireless path characteristic to adapt the coefficients.
The receiver of any preceding claim, having circuitry (270,280,290) for demodulating and CDMA decoding of the combined equalized signal.
The receiver of any preceding claim, having circuitry (130,140,150,160) for IF processing of the signals from the antennas.
The receiver of any preceding claim, having circuitry (170, 180, 190,200,210,220) for converting the signals from the antennas into complex digital form before equalization.
The receiver of any preceding claim, implemented as one or more integrated circuits.
A mobile terminal (70) having an antenna (1,2), the receiver of any preceding claim coupled to the antenna, and a processor coupled to the receiver for processing data received by the receiver.
Dependencies are inferred from the claim text.