Power control using erasure techniques
AssigneeQUALCOMM Incorporated
InventorsArak Sutivong, Avneesh Agrawal, David Jonathan Julian
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Abstract
Techniques for performing erasure detection and power control for a transmission without error detection coding are described. For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, compares the computed metric against an erasure threshold, and declares the received codeword to be “erased” or “non-erased”. The receiver dynamically adjusts the transmit power based on whether the codewords met the erasure threshold or not.
Claims26
A method of performing power control in a communication system, comprising acts of:
- receiving a codeword via a first wireless link;
- generating a message to adjust the power based on whether said codeword was within an erasure threshold;
- transmitting said message on second wireless link;
- and
- adjusting the erasure threshold upon receiving a codeword that is a known codeword.
An apparatus for performing power control in a communication system, comprising acts of:
- means for receiving a codeword via a first wireless link;
- means for computing an indication of confidence that the received codeword is correct, the indication is based on a determination of the Euclidean distance between the received codeword and each of a set of possible valid codewords;
- means for generating a message to adjust the power based on whether the computed indication of confidence was within an erasure threshold;
- and
- means for transmitting said message on second wireless link.
In a wireless communication system, an apparatus comprising:
- an electronic device, said electronic device configured to receive a codeword via a first wireless link, to compute an indication of confidence that the received codeword is correct based on a determination of the Euclidean distance between the received codeword and each of a set of possible valid codewords, to generate a message to adjust the power based on whether the indication of confidence was within an erasure threshold, and transmit said message on second wireless link.
A machine-readable storage medium comprising instructions which, when executed by a machine, cause the machine to perform operations including:
- receiving a codeword via a first wireless link;
- generating a message to adjust the power based on whether said codeword was within an erasure threshold;
- transmitting said message on second wireless link;
- and
- adjusting the erasure threshold upon receiving a codeword that is a known codeword.
Dependencies are inferred from the claim text.