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Predictive data rate control in wireless transmitters

  • US 6,707,862 B1
  • Filed: 03/21/2000
  • Issued: 03/16/2004
  • Est. Priority Date: 03/21/2000
  • Status: Expired due to Fees
First Claim
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1. A wireless transmitter, comprising:

  • a power transmitter, operating to transmit a data stream; and

    a data rate controller operating to predictively determine a data rate for a frame of said data stream, using previously transmitted bit energy of a traffic channel, and a target data throughput;

    wherein said data rate controller includes a first selector to receive a target data throughput, said first selector operating to select a set of normalized thresholds based on said target data throughput;

    said data rate controller further includes a bit energy computer to receive signal power level and a current data rate of a traffic channel, said bit energy computer computing transmitted bit energy on said traffic channel;

    said data rate controller further includes a predictor operating to predict bit energy distributed over a frame period using said transmitted bit energy;

    said data rate controller further includes an estimator configured to compute a statistical distribution of average bit energy in said frame period using said predicted bit energy;

    said estimator includes a weighted average calculator configured to compute average bit energy in said frame period by averaging said predicted bit energy; and

    said averaging is performed by multiplying each predicted bit energy value with a specified weight, such that a sum of specified weights is equal to one.

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