A New Coding Scheme for Infrared ASK Communication Systems Which Have Zero - Spectrum Points within the Main - Lobe Region ∗
نویسندگان
چکیده
In the present paper, a new coding scheme for infrared ASK communication systems—Pulse Sequence Modulation (PSM)—will be proposed, which uses a combination of pulse sequences so that it canattain zero-spectrum points at specific frequencies within the main-lobe region. The interference to the other IR systems was a problem of the conventional infrared ASK communication systems. The proposed PSM coding scheme reduces the interference by decreasing the emission at specific frequencies, and helps multiple IR communication systems co-exist without deteriorating coding efficiency. key words: infrared, ASK, spectrum, coding, PSM, co-existence
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