Method and apparatus for channel feedback
First Claim
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1. A method for a target communication unit to communicate to a source communication unit, knowledge of a channel comprising a plurality of subcarriers, the method comprising the steps of:
- determining a plurality of channel estimates for a plurality of subcarriers received from the source communication unit;
producing a channel waveform based on the plurality of channel estimates; and
communicating knowledge of the channel by transmitting the channel waveform to the source communication unit;
wherein the channel waveform based on at least one of,
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Abstract
A method for communicating channel estimates on a plurality of subcarriers between a transmitting device and a receiving device. The transmitting device determines a channel estimates on a plurality of subcarriers and then encodes the channel estimates into at least one encoded channel waveform. Then the transmitting device transmits the at least one encoded channel waveform to the receiving device.
49 Citations
35 Claims
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1. A method for a target communication unit to communicate to a source communication unit, knowledge of a channel comprising a plurality of subcarriers, the method comprising the steps of:
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determining a plurality of channel estimates for a plurality of subcarriers received from the source communication unit; producing a channel waveform based on the plurality of channel estimates; and communicating knowledge of the channel by transmitting the channel waveform to the source communication unit; wherein the channel waveform based on at least one of, - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for communicating channel estimates, comprising the steps of:
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receiving a message, the message indicating at least a particular method to be used for providing channel estimates from a target communication unit for a plurality of subcarriers; constructing a channel waveform in accordance with the particular method to provide channel estimates for a plurality of subcarriers; and transmitting the channel waveform to aide a source communication unit in determining channel estimates for the plurality of subcarriers. - View Dependent Claims (19, 20)
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21. A method for obtaining channel estimates at a source communication unit, the method comprising the steps of:
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configuring a message for a target communication unit, the message indicating at least a particular method to be used for obtaining channel estimates from the target communication unit for a plurality of subcarriers; transmitting the message to the target communication unit; receiving a channel waveform from the target communication unit, wherein the channel waveform is constructed in accordance with the particular method; and determining channel estimates for the plurality of subcarriers based on the received channel waveform. - View Dependent Claims (22, 23)
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24. An apparatus for communicating channel knowledge, the apparatus comprising:
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receiver circuitry, for receiving a signal from a source communication unit comprising a plurality of subcarriers; channel estimation circuitry, for determining a plurality of channel estimates for a plurality of subcarriers received from the source communication unit; channel waveform circuitry, for producing a channel waveform based on the plurality of channel estimate; and transmission circuitry, for transmitting the channel waveform to the source communication unit in order to provide channel knowledge to the source communication unit wherein the channel waveform based on at least one of, - View Dependent Claims (25, 26, 27)
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28. A method for a target communication unit to communicate to a source communication unit, knowledge of a channel comprising a plurality of subcarriers, the method comprising the steps of:
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determining a plurality of channel estimates for a plurality of subcarriers received from the source communication unit; producing a channel waveform based on the plurality of channel estimates; and communicating knowledge of the channel by transmitting the channel waveform to the source communication unit; receiving a message instructing the target communication unit to transmit at least one of; a plurality of symbols having a specific symbol index; a plurality of symbols on a starting frequency band and a number of frequency bands to utilize; and a plurality of symbols having a specific separability type. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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Specification