论文标题
多普勒在OFDM无线通信系统中欺骗
Doppler Spoofing in OFDM Wireless Communication Systems
论文作者
论文摘要
在本文中，我们提出了一种方法，该方法可防止未经授权的接收器（URX）正确估计正交频施加多元化（OFDM）无线信号中存在的多普勒移位。为了防止此估计，我们建议将人工频率变化插入带有欺骗/假速度的发射机（TX）运动的传输信号中。这种欺骗的多普勒偏移不会影响数据解调，因为它可以在合法的接收器（LRX）上进行补偿。我们通过模拟评估其方法的功效，并表明它提供了一种可靠的方法来保护无线源隐私的一个关键要素，即发射机的速度。
In this paper we present a method that prevents an unauthorized receiver (URx) from correctly estimating the Doppler shift present in an orthogonal frequency division multiplexing (OFDM) wireless signal. To prevent this estimation we propose to insert an artificial frequency variation in the transmitted signal that mimics a transmitter (Tx) movement with a spoofed/fake speed. This spoofed Doppler shift does not affect data demodulation since it can be compensated at the legitimate receiver (LRx). We evaluate our method for its efficacy through simulations and we show that it offers a reliable way to protect one key element of the privacy of a wireless source, namely the speed of the transmitter.
