Radio communication Contents Ch. Mobile cellular telecommunications systems. Wireless and Cellular Communications by William C. Lee Welcome to EasyEngineering, One of the trusted educational blog. Intelligent Cell Concept and Applications Ch.
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Basic Cellular Mobile System. Uniqueness of mobile radio environment-Long term fading. Factors influencing short term fading. Parameters of mobile multipath fading-Time dispersion parameters. Coherence bandwidth. Doppler spread and coherence time. Types of small scale fading. Co-channel interference.
Co-channel Interference reduction factor. Trunking and grade of service. Improving coverage and capacity in cellular systems- Cell splitting. Mictocell zone concept. Design of antenna system. Antenna parameters and their effects. Diversity techniques-Space diversity. Polarization diversity. Frequency diversity. Time diversity. Near end far end interference. Cross talk. I Effects on coverage and interference by power decrease. Antenna height decrease.
Effects of cell site components. UHF TV interference. Effect of human made structures. Phase difference between direct and reflected paths. Constant standard deviation. Straight line path loss slope. Near and long distance propagation. Path loss from a point to point prediction model in different conditions. Coverage-omni directional antennas. Interference reduction— directional antennas for interference reduction. Space diversity antennas. Umbrella pattern antennas.
Setup access and Paging channels. Channel assignments to cell sites and mobile units. Channel sharing and Borrowing. Overlaid cells. Delaying ltandoff. Advantages of handoff. Potter difference handoffs.
Forced handoff. Mobile assisted and soft hancloff. Introduction to dropped call rates and their evaluation.
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CELLULAR AND MOBILE COMMUNICATION BY C.Y.LEE PDF