多普勒扩展(Doppler Spread)指多普勒频谱不等于 零的频率范围。如果发送的频率为单频,频率为:f c ,接收信号的频谱为多普勒频谱,频率范围:f c - f d到f c + f...
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多普勒容限扩展 Doppler tolerance expansion
Doppler spread destroys the orthogonality between OFDM sub-carriers. But at the same time, Doppler spread brings usable resources.
多普勒扩展破坏了OFDM系统载波间的正交性,但同时也带来了可以利用的资源。
参考来源 - 高速移动环境下OFDM系统关键技术的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
可以在比现有技术更宽的多普勒扩展范围上更精确地估算多普勒极限频率。
The maximum Doppler frequency can be estimated more accurately over a wider range of Doppler spreads than prior art.
多普勒分集将多普勒扩展作为一种分集方式，通过增强信号能量来改善系统性能。
Doppler diversity considers Doppler spread as a way of diversity, and improves the system performance by enhancing the signal energy.
将多普勒分集技术应用于OFDM系统，可以有效地对抗多普勒扩展对系统性能的影响。
Applying Doppler diversity in OFDM system can combat the effect of Doppler spread on system performance.
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