Optimal Power Allocation in MISO Cache-Aided Communication

Soheil Mohajer; Itsik Bergel

doi:10.1109/SPAWC.2018.8445770

Optimal Power Allocation in MISO Cache-Aided Communication

Soheil Mohajer, Itsik Bergel

University of Minnesota Twin Cities

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

The problem of cache-aided communication is studied for cellular networks with multi-user, with multiple-input and multiple output antennas, and finite range of signal-to-noise ratio. Users are assumed to have non-symmetric links, modeled by wideband fading channels. The ultimate goal is to design a joint power, rate, and cache allocation along with pre-fetching and fetching schemes to minimize the duration of communication in the delivery phase. This is formulated as a linear program, and a closed form solution is presented for some special range of parameters. In particular, the gain of MIMO coded caching is shown to be beyond trading between spatial diversity and accumulative cache size, specially in low SNR regime, where each user can be served at its own channel rate, rather than being compromised by the poorest user in the communication group.

Original language	English
Title of host publication	2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	9781538635124
DOIs	https://doi.org/10.1109/SPAWC.2018.8445770
State	Published - 24 Aug 2018
Event	19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018 - Kalamata, Greece Duration: 25 Jun 2018 → 28 Jun 2018

Publication series

Name	IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Volume	2018-June

Conference

Conference	19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018
Country/Territory	Greece
City	Kalamata
Period	25/06/18 → 28/06/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Funding

The work of S. Mohajer was supported in part by the National Science Foundation under Grant CCF-1749981.

Funders	Funder number
National Science Foundation	CCF-1749981, 1749981

Keywords

Cache and Power allocation
Cache-aided communication
Finite SNR regime
MIMO
Zero-forcing

Access to Document

10.1109/SPAWC.2018.8445770

Cite this

Mohajer, S., & Bergel, I. (2018). Optimal Power Allocation in MISO Cache-Aided Communication. In 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018 Article 8445770 (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC; Vol. 2018-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SPAWC.2018.8445770

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Mohajer, S & Bergel, I 2018, Optimal Power Allocation in MISO Cache-Aided Communication. in 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018., 8445770, IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, vol. 2018-June, Institute of Electrical and Electronics Engineers Inc., 19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018, Kalamata, Greece, 25/06/18. https://doi.org/10.1109/SPAWC.2018.8445770

Optimal Power Allocation in MISO Cache-Aided Communication. / Mohajer, Soheil; Bergel, Itsik.
2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. 8445770 (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC; Vol. 2018-June).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Mohajer S, Bergel I. Optimal Power Allocation in MISO Cache-Aided Communication. In 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018. Institute of Electrical and Electronics Engineers Inc. 2018. 8445770. (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC). doi: 10.1109/SPAWC.2018.8445770

Optimal Power Allocation in MISO Cache-Aided Communication

Abstract

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Bibliographical note

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Keywords

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