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12 - Fundamentals of Coded Caching for Interference Management

from Part III - Cache-Aided Interference and Physical Layer Management

Published online by Cambridge University Press:  19 October 2020

Edited by
Thang X. Vu ,
Ejder Baştuğ ,
Symeon Chatzinotas  and
Tony Q. S. Quek
Thang X. Vu
Affiliation:
Université du Luxembourg
Ejder Baştuğ
Affiliation:
Nokia Bell Labs, France
Symeon Chatzinotas
Affiliation:
Université du Luxembourg
Tony Q. S. Quek
Affiliation:
Singapore University of Technology and Design
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Summary

This chapter investigates the impact of caching in the interference networks. First, we briefly review the basics of some classic interference networks and the corresponding interference management techniques. Then we review an interference network with caches equipped at all transmitters and receivers, termed as cache-aided interference network. The information-theoretic metric normalized delivery time (NDT) is introduced to characterize the system performance. The NDT in the cache-aided interference network is discussed for both single-antenna and multiple-antenna cases. It is shown that with different cache sizes, the network topology can be opportunistically changed to different classic interference networks, which leverages local caching gain, coded multicasting gain, and transmitter cooperation gain (via interference alignment and interference neutralization). Finally, the NDT results are extended to the partially connected interference network.

Keywords

edge cachingnormalized delivery timeinterference channelscoded cachingmulticast
Type
Chapter
Information
Wireless Edge Caching
Modeling, Analysis, and Optimization
 , pp. 236 - 256
Publisher: Cambridge University Press
Print publication year: 2021

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