论文标题
双模式CHIRP传播频谱调制
Dual-Mode Chirp Spread Spectrum Modulation
论文作者
论文摘要
在这封信中，我们提出了针对低功率宽面积网络的双模式CHIRP扩展光谱（DM-CSS）调制。 DM-CSS能够相对于其对应物（例如远距离（LORA）调制）实现较高的光谱效率（SE）。考虑到相同的符号时期，DM-CS中的SE通过：（i）同时偶数和奇数的chirp信号； （ii）使用\（0 \）和\（π\）弧度的相移，均匀和奇数chirp信号； （iii）使用上流或下chirp信号。相对于洛拉，相同带宽和扩散因子的SE最多增加了（116.66 \％\）。我们提出了一个完整的收发器体系结构以及非相关检测过程。仿真结果表明，DM-CSS不仅比大多数经典同行更具光谱有效，而且更节能。还证明了DM-CSS对相位和频率偏移具有鲁棒性。
In this letter, we propose dual-mode chirp spread spectrum (DM-CSS) modulation for low-power wide-area networks. DM-CSS is capable of achieving a higher spectral efficiency (SE) relative to its counterparts, such as Long Range (LoRa) modulation. Considering the same symbol period, the SE in DM-CSS are augmented by: (i) simultaneously multiplexing even and odd chirp signals; (ii) using phase shifts of \(0\) and \(π\) radians for both even and odd chirp signals; and (iii) using either up-chirp or down-chirp signal. The SE increases by up to \(116.66\%\) for the same bandwidth and spreading factor relative to LoRa. We present a complete transceiver architecture along with non-coherent detection process. Simulation results reveal that DM-CSS is not only more spectral efficient but also more energy efficient than most classical counterparts. It is also demonstrated that DM-CSS is robust to phase and frequency offsets.
