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Offset tolerant hybrid demodulator in presence of a wide filter

Vries, T. de (2020) Offset tolerant hybrid demodulator in presence of a wide filter.

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Abstract:The offset tolerant hybrid demodulator is robust against carrier frequency offset, but the receiver requires a wider filter to capture that offset. Previously, a shifted correlation method has been proposed in a double differential PSK demodulator to combat the extra noise added by the wide filter. The proposed demodulator in this paper combines the shifted correlations method with the offset tolerant hybrid demodulator. The results show that the shifted correlation method substantially improves the performance of the demodulator in presence of a wide filter. For a filter bandwidth that can tolerate frequency offsets up to 50 times the symbol rate, the shifted correlation method reduces the E_b/N0 required for BER=10^-3 by 3dB for 2PSK/4FSK and 1.5dB for 4PSK/2FSk.
Item Type:Essay (Bachelor)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering BSc (56953)
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