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"System capacity: The system has been defined to enable users to achieve a level of performance similar to that of DSL services available. This equates to a downlink or download speed of around 1.5 Mbps at the cell periphery and an uplink or upstream speed of 384 kbps. These figures assume 12 simultaneous users. To attain this the overall system capacity must be 18 Mpbs in the downlink direction."
Quote and table below, from: radio-electronics . com
The basic specification parameters of the IEEE 802.22 standard can be seen in the table below:
Parameter Specification Typical cell radius (km) 30 - 100 km Methodology Spectrum sensing to identify free channels Channel bandwidth (MHz) 6, (7, 8) Modulation OFDM Channel capacity 18 Mbps User capacity Downlink: 1.5MbpsUplink: 384 kbps
The standard is not yet final. Finalization is expected in 2010, first quarter.
What else can I help you with?
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