Technology comparisons in wireless local loop

Economic factors and emerging technologies are the two main forces that are making WLL solutions a reality. WLL uses wireless technology coupled with line interfaces and other circuitry to complete the "last mile" between the customer\´s premises and the PSTN. In this survey paper, current WLL technologies are introduced. WLL is broadly categorized into two classes: narrowband and broadband. The fact that WLL is competing with other fixed access technologies is emphasized and the comparison with other competing technologies is shown. Capacity and functionality of different technologies employed in WLL systems are briefly compared. DECT, PACS, and PHS are compared in greater detail through quantitative evaluations. In the broadband area, the planning for terrestrial and satellite-based broadband networks used to supply WLL in urban environments is compared