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IEEE Communications Surveys & Tutorials Fourth Quarter 20032 odeling the error performance of wireless channels
 

Summary: IEEE Communications Surveys & Tutorials Fourth Quarter 20032
odeling the error performance of wireless channels
is usually a complex task, because the performance
of wireless channels inherently depends on radio
propagating modes, such as, line of sight (LOS) radiation,
reflections from a smooth surface, diffractions around a cor-
ner, and scattering caused by an object with dimensions on
the order of the wavelength. The radio link is highly variable
over short distances due to the statistical distribution of path
loss (PL) and the physical properties of propagation environ-
ments, thereby making it difficult to generalize the results of
error performance analysis.
Schemes to improve the reliability of wireless channels
range from innovative transport-layer protocols to robust
physical-layer schemes, including better modulation and cod-
ing. The development and selection of the schemes are based
on the understanding of the statistical nature of errors. There-
fore, a good understanding of the nature of errors in wireless
channels is critical in having a reliable wireless communication
for upper-layer applications. Some of the main causes of bit

  

Source: Atiquzzaman, Mohammed - School of Computer Science, University of Oklahoma

 

Collections: Computer Technologies and Information Sciences