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US 2011/0255638 A1Published application
Channel estimation for equalizer using serial localization with indecision
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsAli S. Khayrallah, Chester Park, Yi-Pin Eric Wang
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Abstract
In a receiver with a multi-stage equalizer, such as an SLI equalizer, cumulative symbol estimates generated in one or more early stages of the equalizer are used as effective pilot symbols to improve channel estimation for later stages.
Claims25
A method of demodulating a received signal in a multi-stage receiver, said method comprising:
- demodulating a first representation of the received signal in a first stage of the receiver to generate a first intermediate symbol estimate;
- generating a channel estimate based on the first intermediate symbol estimate;
- demodulating a second representation of the received signal in a second stage of the receiver using the channel estimate to generate a second intermediate symbol estimate;
- and
- combining at least the first and second intermediate symbol estimates from the first and second stages to generate a cumulative symbol estimate.
2 more elements
A receiver for demodulating a received signal in a multi-stage receiver, said method comprising:
- a first demodulator in a first stage of the receiver to demodulate a first representation of the received signal to generate a first intermediate symbol estimate;
- a channel estimator to generate a channel estimate based on the first intermediate symbol estimate;
- a second demodulator in a second stage of the receiver to demodulate a second representation of the received signal in a second stage of the receiver using the channel estimate to generate a second intermediate symbol estimate;
- and
- a combiner to combine at least the first and second intermediate symbol estimates from the first and second stages to generate a cumulative symbol estimate.
2 more elements
Dependencies are inferred from the claim text.