1 research outputs found
Diversity Analysis of Peaky FSK Signaling in Fading Channels
Error performance of noncoherent detection of on-off frequency shift keying
(OOFSK) modulation over fading channels is analyzed when the receiver is
equipped with multiple antennas. The analysis is conducted for two cases: 1)
the case in which the receiver has the channel distribution knowledge only; and
2) the case in which the receiver perfectly knows the fading magnitudes. For
both cases, the maximum a posteriori probability (MAP) detection rule is
derived and analytical probability of error expressions are obtained. Numerical
and simulation results indicate that for sufficiently low duty cycle values,
lower error probabilities with respect to FSK signaling are achieved.
Equivalently, when compared to FSK modulation, OOFSK with low duty cycle
requires less energy to achieve the same probability of error, which renders
this modulation a more energy efficient transmission technique. Also, through
numerical results, the impact of number of antennas, antenna correlation, duty
cycle values, and unknown channel fading on the performance are investigated.Comment: to appear in the IEEE Transactions on Wireless Communication