On the Secrecy Rate Region of a Fast Fading Multiple-Antenna Gaussian Broadcast Channel with Confidential Messages and Partial CSIT
Date Issued
2012
Date
2012
Author(s)
Su, Chien-Li
Abstract
In this thesis we consider the secure transmission over the fast fading multiple antenna Gaussian broadcast channel with confidential messages (FMGBC-CM), where a multiple-antenna transmitter sends independent confidential messages to two users with informa-tion theoretic secrecy and only the statistics of the receivers’ channel state information are
known at the transmitter. We first use the same marginal property of the FMGBC-CM to classify the non-trivial cases, i.e., both the two users have nonzero rates. We then derive the achievable rate region for the FMGBC-CM by solving the channel input covariance matrices and the inflation factor. Due to the complicated rate region formulae, we also resort
to low SNR analysis to investigate the characteristics of the channel. Finally, the numerical examples show that under the information-theoretic secrecy requirement both users can
achieve positive rates simultaneously.
Subjects
Fast fading
multiple antenna
Gaussian broadcast channel with confidential messages
information theoretic secrecy
statistical channel state information at transmitter
wiretap channels
Type
thesis
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