To estimate carrier frequency of digitally modulated signal whose modulation type is unknown, a carrier frequencyestimationmethod for digitally modulated signal is proposed.
Research results show that vortex frequencyestimationmethod based on HHT can estimate vortex signal frequency accurately, and increase the antiinterference ability of the vortex flow meter.
研究结果表明，基于HHT的涡街频率估计方法，可以精确估计涡街信号频率并提高涡街流量计的抗干扰能力。
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This paper proposes a novel channel estimationmethod for wireless Orthogonal Frequency Division Multiplexing systems.