Sentence examples for usage of spectrum from inspiring English sources

After an extensive literature survey, the major challenges and open questions of real-time secondary usage of spectrum are addressed here.

Meanwhile, the usage of spectrum resources is becoming increasingly tense.

Cognitive radio networks (CRNs) [2 4] operate on this idea of the secondary usage of spectrum.

The PU should support different classes of SUs that pay different prices for their usage of spectrum.

However, the secondary usage of spectrum requires the CRs to opportunistically utilize the spatiotemporally available primary user (PU) spectrum.

Therefore, designs of frequency agile front end for user terminal and flexible air interface for supporting dynamic usage of spectrum need to be investigated.

This inefficient usage of the spectrum results directly from the current spectrum regulation policies, which divide the spectrum into static licensed and unlicensed frequencies.

According to the report from Federal Communications Commission (FCC), the spectrum utilization in the usage of allocated spectrum is as low as 15%% [6].

Figure 18 shows the spectrum holes before TSU senses and uses them in the simulation, and the usage of this spectrum after TSU senses and utilizes the spectrum holes.

The discrepancy between current-day spectrum allocation and spectrum use suggests that radio spectrum shortage could be overcome by allowing a more flexible usage of the spectrum.

Cognitive radio networks (CRNs) have been proposed to solve the shortage of usable spectrum and improve the efficiency in the usage of licensed spectrum [1,2].