Using Iris radios, implemented as in Figure 3, we have
built a scenario that consists of three radio nodes that realize
DSA operation. Figure 4 shows our demonstration scenario
with the three transceiver nodes (a Whitespace Access Point
(WSAP), a Whitespace Transmitter (WSTx) and a Whitespace
Receiver (WSRx)) and the Whitespace Server (WSS). Each of
the transceiver nodes includes the Iris physical layer, which
consists of a number of signal processing components as described
previously, and a role-dedicated WS-MAC component.
In principle, the WS-MAC component handles frame composition/
decomposition, schedules frame transmission times and
handles device addressing. However, depending on the device’s