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GLOBECOM 2020 - 2020 IEEE Global Communications Conference by Qi, Yue (author);Vaezi, Mojtaba (author) is a nonfiction available to read on EtoBox.

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This paper studies secure precoding and power allocation for the two-user multiple-input multiple-output broadcast channel (MIMO-BC) with common and confidential messages. In this setting, the base station provides three services: A public service (a multicast or common message) to serve both users and two confidential messages to serve each of the two users secretly. The capacity region of this channel is characterized using secret dirty-paper coding. This scheme is, however, prohibitively complex for practical implementations. Under this scenario, a linear precoding method based on a power splitting scheme among the three services is proposed to optimize the corresponding rate equations in a separated manner by decomposing the MIMO-BC into two wiretap channels and a multicast channel. This approach leverages the wiretap channel solutions to design a precoder for the above channel. Particularly, alternative optimization is applied to the modified wiretap channels. For the multicast channel, analytical solutions together with a nonlinear random search are developed in different cases. Numerical results illustrate the efficacy of the proposed linear precoding and power allocation me

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Author

Qi, Yue (author);Vaezi, Mojtaba (author)

Publisher

IEEE

Published

2020

Language

EN

Category

nonfiction