- Research Article
- Open Access
On-Off Frequency-Shift Keying for Wideband Fading Channels
EURASIP Journal on Wireless Communications and Networking volume 2006, Article number: 098564 (2006)
-ary on-off frequency-shift keying (OOFSK) is a digital modulation format in which-ary FSK signaling is overlaid on on/off keying. This paper investigates the potential of this modulation format in the context of wideband fading channels. First, it is assumed that the receiver uses energy detection for the reception of OOFSK signals. Capacity expressions are obtained for the cases in which the receiver has perfect and imperfect fading side information. Power efficiency is investigated when the transmitter is subject to a peak-to-average power ratio (PAR) limitation or a peak power limitation. It is shown that under a PAR limitation, it is extremely power inefficient to operate in the very-low-SNR regime. On the other hand, if there is only a peak power limitation, it is demonstrated that power efficiency improves as one operates with smaller SNR and vanishing duty factor. Also studied are the capacity improvements that accrue when the receiver can track phase shifts in the channel or if the received signal has a specular component. To take advantage of those features, the phase of the modulation is also allowed to carry information.
Akyildiz IF, Su W, Sankarasubramaniam Y, Cayirci E: A survey on sensor networks. IEEE Communications Magazine 2002,40(8):102-114. 10.1109/MCOM.2002.1024422
Shannon CE: A mathematical theory of communication. Bell System Technical Journal 1948, 27: 379–423, 623-656.
Golay MJE: Note on the theoretical efficiency of information reception with PPM. Proceedings of the IRE 1949., 37, pp. 1031:
Turin GL:The asymptotic behavior of ideal -ary systems. Proceedings of the IRE 1959, 47: 93-94.
Jacobs I:The asymptotic behavior of incoherent-ary communications systems. Proceedings of the IEEE 1963,51(1):251-252.
Pierce JR:Ultimate performance of -ary transmissions on fading channels. IEEE Transactions on Information Theory 1966,12(1):2-5. 10.1109/TIT.1966.1053859
Gallager RG: Information Theory and Reliable Communication. John Wiley & Sons, New York, NY, USA; 1968.
Kennedy RS: Fading Dispersive Communication Channels. John Wiley & Sons, New York, NY, USA; 1969.
Telatar IE, Tse DNC: Capacity and mutual information of wideband multipath fading channels. IEEE Transactions on Information Theory 2000,46(4):1384-1400. 10.1109/18.850678
Luo C, Médard M: Frequency-shift keying for ultrawideband—achieving rates of the order of capacity. Proc. 40th Annual Allerton Conference on Communication, Control, and Computing, October 2002, Monticello, Ill, USA
Verdú S: Spectral efficiency in the wideband regime. IEEE Transactions on Information Theory 2002,48(6):1319-1343. 10.1109/TIT.2002.1003824
Médard M, Gallager RG: Bandwidth scaling for fading multipath channels. IEEE Transactions on Information Theory 2002,48(4):840-852. 10.1109/18.992769
Gursoy MC, Poor HV, Verdú S: The noncoherent Rician fading channel—Part II: Spectral efficiency in the low-power regime. IEEE Transactions on Wireless Communications 2005,4(5):2207-2221.
Lun DS, Médard M, Abou-Faycal IC: On the performance of peaky capacity-achieving signaling on multipath fading channels. IEEE Transactions on Communications 2004,52(6):931-938. 10.1109/TCOMM.2004.829512
Luo C, Médard M, Zheng L: Error exponents for multi-tone frequency shift keying on wideband Rayleigh fading channels. Proc. IEEE Global Telecommunications Conference (GLOBECOM '03), December 2003, San Francisco, Calif, USA 2: 779-783.
Butman SA, Bar-David I, Levitt BK, Lyon RF, Klass MJ: Design criteria for noncoherent Gaussian channels with MFSK signaling and coding. IEEE Transactions on Communications 1976,24(10):1078-1088. 10.1109/TCOM.1976.1093213
Stark WE: Capacity and cutoff rate of noncoherent FSK with nonselective Rician fading. IEEE Transactions on Communications 1985,33(11):1153-1159. 10.1109/TCOM.1985.1096232
Neeser FD, Massey JL: Proper complex random processes with applications to information theory. IEEE Transactions on Information Theory 1993,39(4):1293-1302. 10.1109/18.243446
Abou-Faycal IC, Médard M, Madhow U: Binary adaptive coded pilot symbol assisted modulation over Rayleigh fading channels without feedback. IEEE Transactions on Communications 2005,53(6):1036-1046. 10.1109/TCOMM.2005.849998
Padovani R, Wolf JK: Coded phase/frequency modulation. IEEE Transactions on Communications 1986,34(5):446-453. 10.1109/TCOM.1986.1096564
Ghareeb I, Yongacoglu A: Performance of joint frequency phase modulation over Rayleigh fading channels. IEE Proceedings. I, Communications, Speech and Vision 1994,141(4):241-247.
Khalona RA, Atkin GE, LoCicero JL: On the performance of a hybrid frequency and phase shift keying modulation technique. IEEE Transactions on Communications 1993,41(5):655-659. 10.1109/26.225476
Hung F-C, Chung C-D, Chao Y-L: Coherent frequency/phase modulation scheme. IEE Proceedings. I, Communications, Speech and Vision 2002,149(1):36-44.
Viterbi AJ:Performance of an -ary orthogonal communication system using stationary stochastic signals. IEEE Transactions on Information Theory 1967,13(3):414-422.
Butman SA, Klass MJ: Capacity of noncoherent channels. In Tech. Rep. 32-1526. Jet Propulsion Laboratory, Pasadena, Calif, USA; vol. 18, pp. 85–93, September 1973
Grimmett GR, Stirzaker DR: Probability and Random Processes. Oxford University Press, New York, NY, USA; 1998.
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Gursoy, M.C., Poor, H.V. & Verdú, S. On-Off Frequency-Shift Keying for Wideband Fading Channels. J Wireless Com Network 2006, 098564 (2006) doi:10.1155/WCN/2006/98564
- Information System
- Phase Shift
- System Application
- Fading Channel
- Modulation Format