Secure Broadcasting over Fading Channels with Statistical QoS Constraints

Details Secure Broadcasting over Fading Channels with Statistical QoS Constraints Secure Broadcasting over Fading Channels with Statistical QoS Constraints

2010-04-06

arxiv.org/abs/1004.0892v1

Computer Science

Information Theory

Scientific paper

In this paper, the fading broadcast channel with confidential messages is studied in the presence of statistical quality of service (QoS) constraints in the form of limitations on the buffer length. We employ the effective capacity formulation to measure the throughput of the confidential and common messages. We assume that the channel side information (CSI) is available at both the transmitter and the receivers. Assuming average power constraints at the transmitter side, we first define the effective secure throughput region, and prove that the throughput region is convex. Then, we obtain the optimal power control policies that achieve the boundary points of the effective secure throughput region.

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