Method and apparatus for determining the frame rate of a frame
AssigneeMotorola, Inc.
InventorsLee M. Proctor, Mark D. Hetherington, Nai Sum Wong, William K. Morgan
Life of this patent
Estimating the term…
Abstract
Because prior-art rate determination algorithms are prone to falsing, a sub-rate discrimination metric generator (160) is provided herein. The generator (160) correlates a received frame with known characteristics of sub-rate frames to generate additional metrics useful in rate determination. These metrics are passed to a modified rate determination algorithm (150).
Claims16
A method for determining a frame rate from a set of possible frame rates for a frame received in a communication system, the method comprising the steps of:
- receiving the frame;
- segmenting the frame into a set of segments;
- determining a confidence level that symbols within a segment of the set of segments were originally transmitted with the same polarity;
- comparing the confidence level with a threshold;
- and
- determining the frame rate for the frame based on the comparison.
A method for determining a frame rate from a set of possible frame rates for a frame in a communication system, the method comprising the steps of:
- receiving a frame;
- segmenting the frame into a first set of segments, each segment containing 8 symbols;
- segmenting the frame into a second set of segments, each segment containing 2 symbols;
- determining a first confidence level that the frame was originally transmitted as an eighth rate frame;
- and
- determining a second confidence level that the frame was originally transmitted as a half rate frame.
An apparatus for determining a frame rate of a frame within a communication system, the apparatus comprising:
- a rate determiner having an input comprising a sub-rate correlation result, the sub-rate correlation result determined based on segmenting the frame into a set of segments and determining a confidence level that symbols within a segment of the set of segments were originally transmitted with the same polarity, the rate determiner outputting a frame rate based on the sub-rate correlation result.
Dependencies are inferred from the claim text.