Editing WiMAX (section)

=== Inherent limitations ===
WiMAX cannot deliver 70&nbsp;[[Bit rate|Mbit/s]] over {{convert|50|km|mi|abbr=on}}. Like all wireless technologies, WiMAX can operate at higher bitrates or over longer distances but not both. Operating at the maximum range of {{convert|50|km|mi|abbr=on}} increases [[bit error ratio|bit error rate]] and thus results in a much lower bitrate. Conversely, reducing the range (to under 1&nbsp;km) allows a device to operate at higher bitrates.

A citywide deployment of WiMAX in [[Perth]], [[Australia]] demonstrated that customers at the cell-edge with an indoor [[Customer-premises equipment]] (CPE) typically obtain speeds of around 1–4&nbsp;Mbit/s, with users closer to the cell site obtaining speeds of up to 30&nbsp;Mbit/s.{{Citation needed|date=August 2010}}

Like all wireless systems, available bandwidth is shared between users in a given radio sector, so performance could deteriorate in the case of many active users in a single sector. However, with adequate capacity planning and the use of WiMAX's QoS, a minimum guaranteed throughput for each subscriber can be put in place. In practice, most users will have a range of 4–8&nbsp;Mbit/s services and additional radio cards will be added to the base station to increase the number of users that may be served as required.