Explain 4 significant technology of the WLL system. What are the advantages and disadvantages of this methodology?
WLL System The WLL system can be based on 4 significant technologies. They are: Satellite-Based Systems: These systems give communication services to rural networks and isolated territories, for example, islands. Satellite systems are intended for a Gaussian or Rician station with K factor more prominent than 7 dB. These systems can be of two kinds: Technology designed explicitly for WLL applications and Technology piggybacked onto mobile satellite systems as an aide service of these. The previous offer quality and grade of service equivalent to wireline access, yet it might be costly. The last promises to be less costly but due to bandwidth capacity limitations, may not offer the quality and grade of service comparable to plain old telephone utility (POTS). A case of a satellite-based technology explicitly designed for WLL is the HNS telephony earth station (TES) technology. Advantages: • The low bit rate for voice and data. • Low-cost mobile terminals. •...