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Optimizing Physical Layer Data Transmission for Minimal Signal Distortion

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Title: Optimizing Physical Layer Data Transmission for Minimal Signal Distortion
Author: Johnson, Don; Rodriguez-Diaz, Hiram
Type: Conference Paper
Keywords: physical layer; digital communication; variable power transmission
Citation: D. Johnson and H. Rodriguez-Diaz,"Optimizing Physical Layer Data Transmission for Minimal Signal Distortion," in IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
Abstract: When transmitting a sampled signal digitally, data and error correction bits must be transmitted at least as fast as the sampling rate. Typically, each bit is allocated the same transmission time interval, which means the optimal detector yields the same error probability for each bit. An alternative is to vary the bit interval duration according to the bit's contribution to the reconstructed sample. The optimal solution yields significant gains in mean-squared error (several dB) over that provided by equal-duration bit intervals. These gains occurred over a wide range of signal-to-noise ratios. When block error correction is performed, we derive the optimal decoder from a Bayesian viewpoint and show that gains obtain here as well.
Date Published: 2003-04-20

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  • ECE Publications [1047 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students
  • DSP Publications [508 items]
    Publications by Rice Faculty and graduate students in digital signal processing.