I. Introduction
Device-Free Localization (DFL) scheme can achieve target locations without obliging any tools furnished on targets [1], which has been widely applied in social security [2], smart home [3], national defence [4], and so on. In DFL, targets influence the wireless signal predictably, which serves as the connection between the target location and the measurement. A large number of wireless links are required to guarantee the localization accuracy. However, wireless links are always power-based, causing colossal energy consumption and massive communication pressure. Compressive Sensing (CS) theory [5] is applied to reduce the required devices while ensuring the localization accuracy.