A review of theatmospheric effects on radiopath lossin cellular mobile communication system

摘要

Radio propagation is essential for emerging technologies with appropriate design, deployment and management strategies for any wireless network. It is heavily site specific and can vary significantly depending on terrain, atmospheric effects, frequency of operation, velocity of mobile terminal, interface sources and other dynamic factor. Accurate characterization of radio channel through key parameters and a mathematical model is important for: predicting signal coverage, achievable data rates, network planning, Quality of service, hand over performance, etc. Efficiency of present path loss models for cellular communication system suffers when they are used in the environment other than for which they have been used. Accurate path loss can be determined by measuring strength of signal through site specific field measurements.