TABLE OF CONTENTS Ron Olexa
Now that we have reviewed the basics of radio operation, propagation, and predictive and actual performance measurements, it s time to see how this information is used as part of the design criteria in a system to actually provide services to a customer base.
System design must consider far more than just the RF aspects of the system. If the system is to function optimally and be cost effective, such diverse topics as equipment selection, real estate, construction, interconnect, power, and maintenance must be considered. Each of these topics has an initial capital cost and, with the exception of construction, an ongoing cost.
Because of the myriad interactions you will encounter in designing a system, a flowchart is helpful for identifying the selection criteria for each of the key aspects of system design. Because there are so many different unique business opportunities that can be served with wireless data systems, it s impossible to review them all in this book. Instead I ll look at three distinctly different models, and walk through a design exercise for each. The first example system will be a single AP hotspot or small office LAN. The second example will be a far more complex MultiAP office LAN or hotzone requiring frequency reuse in its implementation. The third system will be a Wireless ISP (WISP) type system that is expected to cover a large outdoor area and provide Internet connectivity to a large, geographically dispersed user base. The WISP system could be...
