Method and system for content aware and energy efficient transmission of videos and images
First Claim
1. A method for encoding multimedia to be transmitted on a channel, comprising:
- measuring a condition of the channel;
measuring rate and distortion characteristics of the multimedia;
providing a set of error resilient source encoding procedures;
providing a set of channel encoding procedures;
providing a set of transmitter power levels;
providing an objective function and a constraint based on energy and distortion; and
selecting jointly a particular error resilient source encoding procedure, a particular channel encoding procedure, and a particular power level based on the condition of the channel and the rate and distortion characteristics, while minimizing an objective function and satisfying a constraint.
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Abstract
A method selects source and channel codec parameters according to varying channel conditions and signal to noise ratio for a given distortion constraint. The processes of source and channel encoding and decoding with the selected parameter values and transmit power level per quality layer minimize a total energy consumption for delivery of multimedia content from a transmitting terminal to a receiving terminal. The total energy consumption is defined as the energy consumed while processing and transmitting the multimedia. Coding parameters, such as channel code rates, error resilience redundancy, unequal error protection level, and transmit power level can vary from layer to layer.
35 Citations
10 Claims
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1. A method for encoding multimedia to be transmitted on a channel, comprising:
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measuring a condition of the channel;
measuring rate and distortion characteristics of the multimedia;
providing a set of error resilient source encoding procedures;
providing a set of channel encoding procedures;
providing a set of transmitter power levels;
providing an objective function and a constraint based on energy and distortion; and
selecting jointly a particular error resilient source encoding procedure, a particular channel encoding procedure, and a particular power level based on the condition of the channel and the rate and distortion characteristics, while minimizing an objective function and satisfying a constraint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for encoding multimedia to be transmitted on a channel, comprising:
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means for measuring a condition of the channel;
means for measuring rate and distortion characteristics of the multimedia;
joint source channel coding-power controller means for selecting jointly an error resilient source encoding procedure, a channel encoding procedure, and a power level based on the condition of the channel and the rate and distortion characteristics, while minimizing an objective function and satisfying a constraint;
a source encoder applying the error resilient source encoding procedure to the multimedia to produce a bit stream;
a channel encoder applying the channel encoding procedure to the bitstream to produce an output signal; and
a transmitter applying the particular power level to the output signal for transmission.
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Specification