Real-Time Variable-to-Fixed Lossless Source Coding of Randomly Arriving Symbols

Abend, Uri; Khina, Anatoly

doi:10.1109/itw46852.2021.9457588

Cited by 4 publications

(2 citation statements)

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“…Furthermore, the slope of these curves are equal to − 3 4 , confirming Theorem 2. We also observe that there is a gap no greater than 5 2 incurred by using ceiling function for the two real-valued coding policies and that the gap between the two integer-valued coding policies is small. In Fig.…”

Section: Numerical Resultsmentioning

confidence: 65%

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Timely updates in MEC-assisted status update systems: Joint task generation and computation offloading scheme

et al. 2020

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We consider a joint sampling and compression system for timely status updates. Samples are taken, quantized and encoded into binary sequences, which are sent to the destination. We formulate an optimization problem to jointly design sampler, quantizer and encoder, minimizing the age of information (AoI) on the basis of satisfying a mean-squared error (MSE) distortion constraint of the samples. We prove that the zero-wait sampling, the uniform quantization, and the real-valued AoI-optimal coding policies together provide an asymptotically optimal solution to this problem, i.e., as the average distortion approaches zero, the combination achieves the minimum AoI asymptotically. Furthermore, we prove that the AoI of this solution is asymptotically linear with respect to the log MSE distortion with a slope of − 3 4 . We also show that the realvalued Shannon coding policy suffices to achieve the optimal performance asymptotically. Numerical simulations corroborate the analysis.

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Section: Numerical Resultsmentioning

confidence: 65%

“…The optimal sampling policy for generateat-will sources have been investigated in [2] and [3] without involving coding. Real-time fixed-to-variable, variable-to-fixed and variable-to-variable lossless source coding schemes have been studied in [4], [5] and [6] respectively. In [4]- [6], all the symbols generated are transmitted.…”

Section: Introductionmentioning

confidence: 99%