AuthorTroublefield, Robert C.
KeywordsFeher patented Quadrature Phase Shift Keying (FQPSK-B)
bit error rate (BER) vs. signal energy per bit to noise power spectral density (E(b)/N(0))
critical notch depth
adjacent channel interference (ACI)
fade recovery time
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AbstractBit errors often occur in a wireless communications link when impairments alter the transmitted signal. It is advantageous to be able to predict how well a system will tolerate transmission problems. This paper details laboratory performance measurements and comparisons in terms of evaluating configurations of a digital receiver for Feher patented Quadrature Phase Shift Keying (FQPSK-B) demodulation. The transmitted signal is subjected to calibrated levels of impairments while the receiver performance is monitored in real-time.
SponsorsInternational Foundation for Telemetering