Title :
Adaptive Frequency Hopping in Ad Hoc Networks with Rayleigh Fading and Imperfect Sensing
Author :
Tanbourgi, Ralph ; Elsner, Jens P. ; Jäkel, Holger ; Jondral, Friedrich K.
Author_Institution :
Commun. Eng. Lab. (CEL), Karlsruhe Inst. of Technol.´´s (KIT´´s), Karlsruhe, Germany
fDate :
6/1/2012 12:00:00 AM
Abstract :
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.
Keywords :
Rayleigh channels; ad hoc networks; optimisation; probability; radiofrequency interference; AFH sensing techniques; ASE; Rayleigh fading; adaptive frequency hopping; area spectral efficiency; carrier detection based sensing; imperfect sensing; packet error rate; probabilistic model; received signal strength sensing; self-interference; self-varying external interference; slow-varying external interference; system optimization; wireless ad hoc networks; Ad hoc networks; Fading; Interference; Probes; Sensors; Wireless communication; Wireless sensor networks; Adaptive frequency hopping; ad hoc networks; area spectral efficiency;
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/WCL.2012.031512.120034
