采用FDMA和CDMA编码激励源时led多波段光电传感器的抗噪性比较

The 2004 IEEE Asia-Pacific Conference on Circuits and Systems, 2004. Proceedings. Pub Date : 2004-12-06 DOI:10.1109/APCCAS.2004.1413073

M. Boukadoum, K. Tabari, A. Bensaoula, D. Starikov

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引用次数: 8

摘要

我们比较了采用FDMA和CDMA编码作为激发源时，基于led的光电前端多波段光谱检测与分析器件的抗噪性。我们的结果是，这两种编码方案在低信噪比水平下提供了相当的性能，但CDMA方法在嘈杂环境中提供了更好的抗噪声能力。因此，与强调FDMA的更常见的同步调制方法相比，它是驱动激励源的更好选择。

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Comparison of the noise immunity of a LED-based multiband optoelectronic sensor when using FDMA and CDMA to code the excitation source

We compare the noise immunity of the LED-based optoelectronic front end of a multiband spectral detection and analysis device when using FDMA and CDMA coding for the excitation source. Our results are that the two coding schemes offer comparable performance at low signal-over-noise levels, but that the CDMA approach offers a much better noise immunity in noisy environments. It is thus a much better alternative to drive the excitation source than the more common synchronous modulation approach that underlines FDMA.

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The 2004 IEEE Asia-Pacific Conference on Circuits and Systems, 2004. Proceedings.

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