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arXiv · 1810.03373

Decentralized Multi-Antenna Coded Caching with Cyclic Exchanges

Srujan Teja Thomdapu·Ketan Rajawat
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Abstract

This paper considers a single cell multi-antenna base station delivering content to multiple cache enabled single-antenna users. Coding strategies are developed that allow for decentralized placement in the wireless setting. Three different cases namely, max-min multicasting, linear combinations in the complex field, and linear combinations in the finite field, are considered and closed-form rate expressions are provided that hold with high probability. For the case of max-min fair multicasting delivery, we propose a new coding scheme that is capable of working with only two-user broadcasts. A cyclic-exchange protocol for efficient content delivery is proposed and shown to perform almost as well as the original multi-user broadcast scheme.

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Srujan Teja Thomdapu, Ketan Rajawat. 2018-10-08. Decentralized Multi-Antenna Coded Caching with Cyclic Exchanges. https://arxiv.org/abs/1810.03373

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