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Inverse synthetic aperture radar (ISAR) imaging of non-uniformly rotating target is very significant in many applications. In this case, the Doppler frequency for a scatterer is time-varying, and the traditional Range-Doppler (RD) algorithm is not appropriate for the azimuth focusing. In this paper, the received signal in a range bin is assumed to be multi-component polynomial phase signal (PPS),...
The dynamic adjustment of TDD UL-DL configuration based on the instantaneous traffic conditions can be an effective way to optimize the system performance. Small cells in LTE heterogeneous network are considered to be one of the candidates for the dynamic adjustment. In this paper, we focus on UL-DL reconfiguration algorithms to conduct the dynamic adjustment, where the QoS requirement differences...
Device-to-Device (D2D) communication is considered to be a promising resource reuse technology for local users, which can support high-speed and power- saving services. However, when D2D users are far away from each other or the quality of D2D channel is not good enough for direct communication, transmission via a direct link is not a good choice. In this paper, we focus on the performance of relay...
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