The CRSN is able to access three spectrum bands: television (TV), ISM 2.4 GHz, and ISM 5 GHz. The TV band consists of 30 channels [46], with the first channel being the common control channel. The CRSN operations, management and transmission activities, are performed in frames. A ...
(1) (1) I3n.3.aImcopgacntiotfivPeUradio communication system, SUs must vacate channels when a PU uses the channel. This section discusses SUs that are insensitive to delay, which means that SUs choose to wait whencehnanconIneulna. TtcehoriigsnnsgeitcittvhieoenrPadUdisi'ocsucisnosetmesmrS...
Optical losses were lower than those reported in [4]—0.25 dB·cm−1 (632.8 nm, He-Ne laser), which were measured for a channel of 5 × 5 μm2 silk waveguides fabricated by printing silk using an FFiigguurree 88.. TThhee ooppttiiccaall lloosssseess ooff tthhee ssiillkk ddeep...