Coherent Detection of Frequency-Hopped QPSK and QASK Systems with Tone and Noise Jamming
International Telemetering Conference Proceedings / October 14-16, 1980 / Bahia Hotel, San Diego, California === Perfectly coherent demodulation provides a lower bound on the bit error probability (BEP) of any spread spectrum system. Here the performance of coherent QPSK and QASK systems combined wi...
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| Language: | en_US |
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International Foundation for Telemetering
1980
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| Online Access: | http://hdl.handle.net/10150/614361 http://arizona.openrepository.com/arizona/handle/10150/614361 |
| Summary: | International Telemetering Conference Proceedings / October 14-16, 1980 / Bahia Hotel, San Diego, California === Perfectly coherent demodulation provides a lower bound on the bit error probability (BEP) of any spread spectrum system. Here the performance of coherent QPSK and QASK systems combined with frequency hopping (FH) or frequency-hopping direct-sequence (FH/PN) spread spectrum techniques in the presence of a multitone or noise jammer is shown. The worst-case jammer and worst-case performance are determined as functions of the signal-to-noise ratio (SNR) and signal-to-jammer power ratio (SJR). Asymptotic results for high SNR show a linear dependence between the jammers' optimal power allocation and the system performance. |
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