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Abstract --This paper presents a new technique for multipath detection in wideband mobile radio systems. An intelligent search
 

Summary: Abstract -- This paper presents a new technique for multipath
detection in wideband mobile radio systems. An intelligent search
algorithm using Boolean Satisfiability (SAT) techniques is used to
search for the multipath delays. The proposed algorithm finds the
multipath components with high probability and hence allows the
system to utilize the inherent diversity in these components to miti-
gate channel fading. Simulation results indicate that the system can
achieve 90% detection or higher of all paths at low signal-to-noise
ratio under frequency-selective Rayleigh fading conditions.
Keywords: Multipath detection; PN code acquisition; SAT.
I. INTRODUCTION
Multipath propagation is one of the main challenges in mo-
bile radio communication systems caused by reflection, refrac-
tion, and scattering of radio waves as they pass through the
wireless channel. Multipath propagation results in receiving
multiple copies of the transmitted signal. In narrow band trans-
mission schemes, multipath causes intersymbol interference
(ISI) that degrades the bit error rate (BER) performance of the
system. On the other hand, if wideband signal transmission is
used, such as spread spectrum (SS) or ultra wideband (UWB),

  

Source: Aloul, Fadi - Department of Computer Engineering, American University of Sharjah

 

Collections: Engineering