EURASIP Journal on Wireless Communications and Networking
The energy detection M-ary Gaussian frequency-shift keying (FSK) system is proposed in this paper. The system performance is analyzed in additive white Gaussian noise channels, multipath channels, and in the presence of synchronization errors. The numerical results show that the M-ary modulation achieves the higher data rate than the binary modulation. However, it also results in performance degradation.
Cui, Song and Xiong, Fuqin, "M-ary energy detection of a Gaussian FSK UWB system" (2014). Electrical Engineering & Computer Science Faculty Publications. 312.