Title :
Threshold extension in weighted PCM with arbitrary probability distribution and nonuniform quantization (Corresp.)
Author :
Soufizadeh, Djalil
fDate :
3/1/1980 12:00:00 AM
Abstract :
The threshold in the output signal-to-noise ratio (SNR) of weighted pulse-code modulation (PCM) is determined for an arbitrary probability distribution of the input signal and a logarithmic quantizer. Numerical results are given which show a reduction of 5.37 dB in the threshold, relative to classical PCM, for a nonuniform probability distribution and a logarithmic quantizer.
Keywords :
PCM coding/decoding; Frequency shift keying; Lagrangian functions; Phase change materials; Probability distribution; Pulse modulation; Quantization; Random variables; Signal to noise ratio;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.1980.1056162
