Performance of Maddah-Ali-Niesen Scheme for Multi-Access Coded Caching over Noisy Channels

Sailahari, K and Mahesh, AA and Rajput, C and Rajan, BS (2023) Performance of Maddah-Ali-Niesen Scheme for Multi-Access Coded Caching over Noisy Channels. In: 34th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2023, 5 September 2023through 8 September 2023, Toronto.

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Abstract

Coded caching techniques help to reduce the traffic overload on the server during peak-traffic hours. Most of the existing schemes consider all transmissions to be over noiseless channels, whereas noise is inherent in wireless communication. In this paper, the multi-access coded caching scheme proposed in the paper 'Maddah-Ali-Niesen Scheme for Multi-access Coded Caching,' ITW 2021, is studied when the server-user shared link and all the cache-user links are noisy. This coded caching has been shown to be information-theoretically optimal in 'Fundamental Limits of Combinatorial Multi-Access Caching,' IEEE Transactions on Information Theory, Feb. 2023. For binary modulated transmissions, the probability that a bit of a requested file is decoded in error at a user is derived when the transmissions are over binary-symmetric, AWGN, and Rayleigh fading channels. Further, the effect of varying the cache access degree (which is the number of caches accessed by each user), and the cache memory size on the probability of bit error performance at a user are also analyzed. Simulation results validating the findings in this paper are also presented. © 2023 IEEE.

Item Type:	Conference Paper
Publication:	IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to publisher.
Keywords:	Binary codes; Channel coding; Clutter (information theory); Fading channels, Caching scheme; Caching technique; Multiaccess; Noiseless channels; Noisy channel; Performance; Rayleigh-fading channel; Symmetrics; Traffic overload; Wireless communications, Cache memory
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	23 Sep 2024 08:31
Last Modified:	23 Sep 2024 08:31
URI:	http://eprints.iisc.ac.in/id/eprint/86314

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