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Adaptive Frequency Hopping in Ad Hoc Networks with Rayleigh Fading and Imperfect Sensing

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4 Author(s)
Tanbourgi, R. ; Commun. Eng. Lab. (CEL), Karlsruhe Inst. of Technol.''s (KIT''s), Karlsruhe, Germany ; Elsner, J.P. ; Jakel, Holger ; Jondral, F.K.

A probabilistic model for adaptive frequency hopping (AFH) based wireless ad hoc networks with Rayleigh fading, where interference is due to self- and to slow-varying external interference, is proposed. Different AFH sensing techniques are studied in terms of area spectral efficiency (ASE) and it is shown that self-interference can have a negative effect on the AFH mechanism. In particular, packet error rate and received signal strength sensing suffer when self-interference is high, while carrier detection based sensing remains robust. The proposed model further offers powerful means for system optimization.

Published in:

Wireless Communications Letters, IEEE  (Volume:1 ,  Issue: 3 )