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US 2013/0259109 A1Published application
Channel estimation based on noise power
AssigneeBroadcom Corporation
InventorsBin Liu, Taikun Cheng, Severine Catreux
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Abstract
Disclosed are various embodiments providing processor configured to determine a received signal strength indication (RSSI) value for each of the plurality of channel taps. The processing circuitry identifies a maximum RSSI value among the RSSI values and may adjust a variable threshold range according to the maximum RSSI value. The RSSI value for each channel tap may be scaled according to a corresponding per tap noise power.
Claims20
A method for a processing circuit comprising:
- generating a set of symbols for a channel tap among a plurality of channel taps based at least upon a multipath signal;
- generating a signal power estimation based at least upon a filtering of the set of symbols by a channel estimation filter;
- generating a received signal strength indication (RSSI) signal based at least upon the signal power estimation;
- determining a noise power estimation for the channel tap based at least upon a portion of the set of symbols;
- and
- scaling the RSSI signal based at least upon the noise power estimation to generate a scaled RSSI signal.
3 more elements
A system for signal processing, comprising:
- a channel tap configured to obtain at least a portion of a multi-channel signal for generating a corresponding tap output;
- a received signal strength indication (RSSI) filter configured to generate an RSSI signal based at least upon a signal power estimation of the tap output;
- and
- a lock detector configured to set the channel tap to a lock status based at least upon the RSSI signal and a predetermined threshold amount.
1 more element
A system comprising:
- processing circuitry configured to:
- determine received signal strength indication (RSSI) value for each of the plurality of channel taps;
- identify a maximum RSSI value among the RSSI values;
- and
- adjust a variable threshold range according to the maximum RSSI value.
2 more elements
Dependencies are inferred from the claim text.