For the considered scenario, TVFF channels may deteriorate the sensing performance and reduce the quality of wireless communication between P_BS and SU_Rs.
Consider a scenario that a malicious SU aims to deteriorate spectrum sensing performance of the system, raising P f and reducing P d.
If a CR is to autonomously assess the availability of a given channel, it needs to overcome challenging issues posed by the varying wireless channel conditions: hidden node problem, deep fading, shadowing, etc., that will deteriorate CR sensing performance.
The process of spectrum sensing with a single sensor is fundamentally limited by local impairments, such as the noise level, the signal-to-noise ratio (SNR) wall [5], and radio propagation effects such as path loss and fading experienced by this sensor, which significantly deteriorate its sensing performance [6].
If so, his tactical sense was deteriorating.
In that context, downhill has the sense of "deteriorating" in contrast to the upbeat alternative that follows.
Tension between politicians, in addition to an increase in banditry, also gives the province a sense of deteriorating safety, said Jawed Kohistani, a security analyst based in Kabul.
A sense of deteriorating order in the arena was expanded by the flickering malfunctions of the Jumbotrons as Eric Trump attempted to follow Cruz.
"Unlike businesses, it's tough for universities to relocate when neighborhoods start deteriorating, so it makes sense for them to partner with various entities to try and revitalize these areas".
But even if the proposals are unlikely to be enacted, thanks to Republican opposition, do they make sense economically?With a deteriorating economic backdrop, easing up on austerity does make sense.
