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衰落信道上的保密通信

Secure Communication over Fading Channels

Yingbin Liang, H. Vincent Poor, Shlomo Shamai

摘要:

研究了具有机密消息(BCC)的衰落广播信道,其中源节点具有用于两个接收器(接收器1和2)的公共信息,并且具有仅用于接收器1的机密信息。机密信息需要对接收器2尽可能保密。从源节点到接收器1和2的广播信道除了加性高斯噪声项之外还被乘性衰落增益系数破坏。假设信道状态信息(CSI)在发射机和接收机处都是已知的。首先研究了具有独立子信道的并行BCC,作为衰落BCC的信息论模型。建立了并行BCC的保密容量域。这个结果,然后专门给保密容量区域的并行BCC与降级的子信道。然后建立了并行高斯BCC的保密容量区域,并导出了达到保密容量区域边界的最优源功率分配。特别地,建立了基本高斯BCC的保密容量区域。保密容量的结果,然后应用到研究衰落BCC。遍历和中断性能进行了研究。

英文摘要:

The fading broadcast channel with confidential messages (BCC) is investigated, where a source node has common information for two receivers (receivers 1 and 2), and has confidential information intended only for receiver 1. The confidential information needs to be kept as secret as possible from receiver 2. The broadcast channel from the source node to receivers 1 and 2 is corrupted by multiplicative fading gain coefficients in addition to additive Gaussian noise terms. The channel state information (CSI) is assumed to be known at both the transmitter and the receivers. The parallel BCC with independent subchannels is first studied, which serves as an information-theoretic model for the fading BCC. The secrecy capacity region of the parallel BCC is established. This result is then specialized to give the secrecy capacity region of the parallel BCC with degraded subchannels. The secrecy capacity region is then established for the parallel Gaussian BCC, and the optimal source power allocations that achieve the boundary of the secrecy capacity region are derived. In particular, the secrecy capacity region is established for the basic Gaussian BCC. The secrecy capacity results are then applied to study the fading BCC. Both the ergodic and outage performances are studied.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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