NUMERICAL ANALYSIS OF NEAR FIELDDISTRIBUTION VARIATION AT 2300 MHZ USINGAWAS

摘要

Prediction of path loss in a wireless system is important to determine its quality of service. Fluctuationsand variations of signal strength at higher frequency range in Near Field zone, is a common difficulty toachieve higher data rate. Continuous variation in signal causes decay of strength by the interference of theatmospheric obstructions and hence electric field intensity gradually decreases with the distance. In thispaper the behaviour of field strength is explored through AWAS Electromagnetic Code which predicts therapid variations in electric field intensity irrespective of environment as compare to statistical modelswhich do not capture the variations as per Environment. An adequate and optimum values of theseparameters is essential for efficient transmission. The results show that the numerical analysis predictsmuch lower field strengths which could significantly affect the channel quality. . This investigation isessential to reduce the rapid fluctuations in field strength of the WiMAX.