Rate control for multi-channel communications systems
First Claim
1. An apparatus for determining rates for a set of data streams to be transmitted over a wireless communication channel in a multi-channel communication system comprising:
- a memory; and
a controller coupled with the memory, the controller configured to define an equivalent system for a group of transmission channels based on one or more estimated channel characteristics of the transmission channels and deriving a metric for the transmission channels based on the equivalent system, the controller further configured to determine a particular rate for the data transmission based on the metric.
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Abstract
Techniques and apparatuses to determine a set of rates for a set of data streams to be transmitted in a multi-channel communication system. A group of transmission channels to be used for each data stream is initially identified. An equivalent system for each group is then defined to have an AWGN (or flat) channel and a spectral efficiency equal to the average spectral efficiency of the transmission channels in the group. A metric for each group is then derived based on the associated equivalent system, e.g., set to the SNR needed by the equivalent system to support the average spectral efficiency. A rate for each data stream is then determined based on the metric associated with the data stream. The rate is deemed to be supported by the communication system if the SNR required to support the data rate by the communication system is less than or equal to the metric.
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Citations
37 Claims
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1. An apparatus for determining rates for a set of data streams to be transmitted over a wireless communication channel in a multi-channel communication system comprising:
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a memory; and a controller coupled with the memory, the controller configured to define an equivalent system for a group of transmission channels based on one or more estimated channel characteristics of the transmission channels and deriving a metric for the transmission channels based on the equivalent system, the controller further configured to determine a particular rate for the data transmission based on the metric. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for determining rates for a set of data streams to be transmitted over a wireless communication channel in a multi-channel communication system comprising:
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a memory; and a controller coupled with the memory, the controller configured to define an equivalent system for a group of transmission channels based on one or more estimated channel characteristics of the transmission channels and deriving a metric for the transmission channels based on the equivalent system, the controller further configured to determine a rate for each data stream based on the metric associated with the data stream. - View Dependent Claims (17, 18, 19, 20, 21)
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22. An apparatus for determining rates for a set of data streams comprising:
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means for defining an equivalent system for a group of transmission channels based on one or more estimated channel characteristics of the transmission channels; means for deriving at least one metric for the transmission channels based on the equivalent system; and means for determining a rate for each data stream based on the at least one metric associated with the data steam. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A method of determining rates for a set of data streams comprising:
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defining an equivalent system for a group of transmission channels based on one or more estimated channel characteristics of the transmission channels; deriving at least one metric for the transmission channels based on the equivalent system; and determining a rate for each data strewn based on the at least one metric associated with the data stream. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A processor readable medium comprising instructions that may be executed by one or more controllers, the instructions comprising:
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instructions for defining an equivalent system for a group of transmission channels based on one or more estimated channel characteristics of the transmission channels; instructions for deriving at least one metric for the transmission channels based on the equivalent system; and instructions for determining a rate for each data stream based on the at least one metric associated wit the data stream.
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Specification