Channel estimator a pipelined interfence cancellation apparatus
OwnerLeo Rademacherinventor
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Abstract
A known pipeline interference cancellation apparatus comprises a plurality of channel estimators. The channel estimates produced are filtered in order to reduce the effects of noise. However, in order to avoid the loss of symbols from weaker users, further filtering is required. The present invention simplifies the above described filtering processes by providing channel estimate and means (516) for generating a signal indicative of the accuracy of the channel estimate. An adaptive channel estimation unit (520) is provided to adapt coefficients of the channel estimation means (500)
Claims9
A channel estimator for a stage of a pipelined interference cancellation apparatus comprising channel estimation means for generating a channel estimate and means for generating a signal indicative of the accuracy of the channel estimate, wherein an adaptive channel estimation unit is arranged to directly adapt coefficients of the channel estimation means in response to the signal indicative of the accuracy of the channel estimate.
A pipelined interference cancellation apparatus comprising a plurality of channel estimators as claimed in any one of the preceding claims.
A channel estimator substantially as hereinbefore described with reference to FIGS. 1 to 5.
Dependencies are inferred from the claim text.