L28 - transmit we waste double the frequency to transmit...

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How to squeeze in as many radioi stations as possible? (Licensed frequency bands are outrageously expensive.) Ans: Make w_a, w_b, w_c as close as possible, but not too close.
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Observation: any real signal is (conjugate) symmetric. It seems that when we use the AM to
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Unformatted text preview: transmit, we waste double the frequency to transmit the same data. Motivation: Can we squeeze in more radio stations by taking advantages of the above observation? (Bandwidth is very expensive.)...
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L28 - transmit we waste double the frequency to transmit...

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