论文标题
非合并多源呼叫传播频谱：多普勒和异步性的性能
Noncoherent Multiuser Chirp Spread Spectrum: Performance with Doppler and Asynchronism
论文作者
论文摘要
在本文中，我们研究了多个用户的CHIRP传播频谱，并通过非合并检测来延续[1]中的连贯检测工作。在存在多个访问干扰（MAI）的情况下，由于与其他用户信号的相关性引起的多个访问干扰（MAI），我们得出了二元CHIRP扩散频谱（BCS）的分析位误差比（BER）表达，这是由于异步或多普勒移位或多普勒的相关性而引起的。为了实现这一目标，我们分析了信号互相关，并将传统的线性鸣叫与我们在[1]中引入的最近提出的非线性chirps以及文献中引入的其他非线性chirps进行了比较。在此过程中，我们说明了在这些实际条件下，对于[1]的非副本对应物，我们的新非线性chirp设计的出色性能。
In this paper, we investigate multi user chirp spread spectrum with noncoherent detection as a continuation of our work on coherent detection in [1]. We derive the analytical bit error ratio (BER) expression for binary chirp spread spectrum (BCSS) in the presence of multiple access interference (MAI) caused by correlation with other user signals because of either asynchronism or Doppler shifts, or both, and validate with simulations. To achieve this we analyze the signal cross correlations, and compare traditional linear chirps with our recently-proposed nonlinear chirps introduced in [1] and with other nonlinear chirps from the literature. In doing so we illustrate the superior performance of our new nonlinear chirp designs in these practical conditions, for the noncoherent counterpart of [1].
