Consider a fast hopping binary ASK system. The AWGN spectrum equals Sn (f) = 10-6 and the binary signal amplitudes are 0 and 2 V, respectively. The ASK uses a data rate of 100 kbit/s and is detected noncoherently. The ASK requires 100 kHz bandwidth for transmission. However, the frequency hopping is over 12 equal ASK bands with bandwidth totaling 1.2 MHz. The partial band jammer can generate a strong Gaussian noise-like interference with total power of 27 dBm. (a) If a partial band jammer randomly jams one of the 12 FH channels, derive the BER of the FH-ASK if the ASK signal hops 6 bands per bit period. (b) If a partial band jammer randomly jams two of the 12 FH channels, derive the BER of the FH-ASK if the ASK signal hops 6 bands per bit period. (c) If a partial band jammer jams all 12 FH channels, derive the BER of the FH-ASK if the ASK signal hops 6 bands per bit period.
Consider a fast hopping binary ASK system. The AWGN spectrum equals Sn (f) = 10-6 and the binary signal amplitudes are 0 and 2 V, respectively. The ASK uses a data rate of 100 kbit/s and is detected noncoherently. The ASK requires 100 kHz bandwidth for transmission. However, the frequency hopping is over 12 equal ASK bands with bandwidth totaling 1.2 MHz. The partial band jammer can generate a strong Gaussian noise-like interference with total power of 27 dBm.
(a) If a partial band jammer randomly jams one of the 12 FH channels, derive the BER of the FH-ASK if the ASK signal hops 6 bands per bit period.
(b) If a partial band jammer randomly jams two of the 12 FH channels, derive the BER of the FH-ASK if the ASK signal hops 6 bands per bit period.
(c) If a partial band jammer jams all 12 FH channels, derive the BER of the FH-ASK if the ASK signal hops 6 bands per bit period.
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![Digital Modulation Scheme (Amplitude-Shift Keying [ASK], Phase-Shift Keying [PSK], Frequency-Shift Keying [FSK])](/static/compass_v2/subjects/engineering/electrical-engineering.svg)
