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Performance Analysis of Irregular Repetition Slotted Aloha with Multi-Cell Interference

Srivatsa, CR and Murthy, CR (2022) Performance Analysis of Irregular Repetition Slotted Aloha with Multi-Cell Interference. In: 23rd IEEE International Workshop on Signal Processing Advances in Wireless Communication, SPAWC 2022, 4 - 6 July 2022, Oulu.

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Official URL: https://doi.org/10.1109/SPAWC51304.2022.9833941


Irregular repetition slotted aloha (IRSA) is a massive random access protocol in which users transmit several replicas of their packet over a frame to a base station. Existing studies have analyzed IRSA in the single-cell (SC) setup. In this work, we analyze multi-cell (MC) IRSA, accounting for pilot contamination and multi-user/MC interference. We find that, in practical settings, the throughput of MC IRSA can be up to 70 lower than SC IRSA. Further, MC IRSA requires a significantly higher training length (about 4 - 5x compared to SC IRSA) to support the same user density and achieve the same throughput. We provide insights into the impact of the pilot length, number of antennas, and SNR on the performance of MC IRSA.

Item Type: Conference Paper
Publication: IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Cells; Cytology, Irregular repetition slotted alohum; Massive random access; Multi-cell interferences; Multicell; Performances analysis; Pilot contaminations; Random access; Random access protocol; Single cells; Slotted Aloha, Signal to noise ratio
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 17 Sep 2022 03:01
Last Modified: 17 Sep 2022 03:01
URI: https://eprints.iisc.ac.in/id/eprint/76560

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