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System and method for reconstruction of sparse frequency spectrum from ambiguous under-sampled time domain data
System and method for reconstruction of sparse frequency spectrum from ambiguous under-sampled time domain data
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机译:从含糊的欠采样时域数据重建稀疏频谱的系统和方法
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摘要
System and method for converting a high bandwidth analog signal to a digital signal including: receiving the high bandwidth analog signal; splitting the high bandwidth analog signal to M parallel channels; delaying the split signal in each channel with N*T delays, respectively; sampling each M delayed signals by M relatively prime sampling rate, wherein the sampling rate for each M delayed signal is smaller than the Nyquist frequency of the high bandwidth analog signal; upsampling each M sampled signal, wherein the upsampling rate for each M sampled signal satisfies the Nyquist frequency of the high bandwidth analog signal; combining the M up sampled signals into a combined signal; and reconstructing the combined signal to generate a digital signal representing the high bandwidth analog signal.
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