Summary

2020

Session Number:C02

Session:

Number:C02-2

On the Capacity of Gaussian Multiple-Access Wiretap Channels with Feedback

Bin Dai,  Chong Li,  Yingbin Liang,  Zheng Ma,  Shlomo (Shitz) Shamai,  

pp.397-401

Publication Date:2020/10/18

Online ISSN:2188-5079

DOI:10.34385/proc.65.C02-2

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Summary:
Two-user Gaussian multiple-access wiretap channel models with feedback are investigated. First, we show that the secrecy capacity regions of both the
Gaussian multiple-access wiretap channel (GMAC-WT) with feedback and the GMAC-WT with noncausal channel state information at the transmitters (GMAC-WT-NCSIT) and
feedback equal the capacity region of the Gaussian multiple-access channel (GMAC) with feedback and without the secrecy constraint and the state corruption. Next, we derive inner and outer bounds on the secrecy capacity region of the GMAC-WT with degraded message set and feedback. Our numerical results show that the perfect secrecy of the private message can be achieved without loss of any reliable transmission rate.