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引用次数: 0
摘要
E. Lampiris和P. Elia的论文《在有限文件大小的情况下，增加发射机显著提高编码缓存增益》介绍了多天线传输作为增加编码缓存增益的可能策略。结果表明，在高信噪比的假设下，如果忽略接收机处的加性高斯白噪声，则可以在减少子分组的情况下同时获得完全复用和缓存增益。本文考虑了一个更现实的接收机噪声不可忽略的情况，提出了一种利用空时码的传输方案，除了高速缓存和复用增益外，还能获得分集增益。
Space Time Codes in Multi-Antenna Coded Caching Systems
The paper "Adding transmitters dramatically boosts coded caching gains for finite file sizes" by E. Lampiris and P. Elia introduced multi antenna transmission as a possible strategy to increase coded caching gains. It showed that under the assumption of very high SNRs, if additive white Gaussian noise at the receivers is neglected, then full multiplexing as well as caching gain can be simultaneously obtained with reduced sub-packetization. In this paper, a more realistic setting where noise at the receivers is non-negligible is considered and a transmission scheme using space time codes is proposed to get diversity gain in addition to caching and multiplexing gains.
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