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Spectrum Leakage Effect Mitigation in RMPI Analog to Information Convertors

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2016

Key Words:

Author NameUniversity of Author
Abstract (2. Language): 
With emergence of Compressive Sensing (CS) theory, new signal acquisition devices called Analog to Information Convertors (AIC) were proposed. One of the most well-known AICs among various AIC architectures is Random Modulator Pre-Integrator (RMPI) AIC. Due to the window processing of signals in RMPI AICs, a phenomena called spectral leakage manifests itself in Discrete Fourier Transform representation of the signal. The spectral leakage in effect reduces signal sparsity and hence degrades quality of the recovered signal. Investigating this problem, in this paper we propose a modified architecture of RMPI analog to information convertor, which successfully handles spectral leakage issue through applying a window envelop in analog domain, prior to measuring the signal. Our simulation results suggest a 25 dB improvement in SNR of recovered signal.
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  • English

REFERENCES

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