Smart meter privacy in the presence of an alternative energy source
Smart meter privacy in the presence of an alternative energy source
复制标题
有替代能源时的智能电表隐私
DOI：
10.1109/icc.2013.6654823
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
J. Gómez
中科院分区：
文献类型：
--
作者：
Deniz Gündüz;J. Gómez
智能电表(SM)以频繁的时间间隔测量和报告用户的能源消耗，揭示关于用户能源消费行为的关键私人信息。本文研究了替代能源(AES)存在下SM系统中的隐私问题。引入了隐私权函数，研究了可实现的信息理论隐私度与加密标准所能提供的平均功率之间的权衡关系。给出了隐私权函数的单字母信息论表达式，并建立了它与率失真函数的对应关系。结果表明，在不损失最优性的情况下，输出字母表可以限制为等于输入字母表，这大大简化了数值分析。给出了不同输入字母和分布的一些数值结果。
A smart-meter (SM) measures and reports the energy consumption of a user at frequent time intervals, revealing critical private information about user's energy consumption behavior. In this paper, privacy in a SM system is studied in the presence of an alternative energy source (AES). The privacy-power function is introduced to study the trade-off between the achievable information theoretic privacy and the average power that can be provided by the AES. A single-letter information theoretic expression is provided for the privacy-power function, and its correspondence with the rate-distortion function is established. It is shown that the output alphabet can be restricted to be equal to the input alphabet without loss of optimality, which simplifies the numerical analysis significantly. Some numerical results are provided for various input alphabets and distributions.