Sentence examples for periodical sensing from inspiring English sources

Its value is either W max or W min. In periodical sensing, the ratio of the sensing window size W to the sensing period can be represented as f sens W. The value of f sens W is selected to be (frac {2}{3}).

In order to measure spectrum utilization, and compare it to the traditional periodical sensing, it is necessary firstly to figure out how much time the "sensing" stage occupies and how much time the "transmitting" stage occupies during transmission.

However, this periodical sensing exists a problem when selecting its periodical duration.

We first compare our proposed simultaneous sensing/transmitting with the traditional periodical sensing.

In case of cognitive radio, periodical sensing must be utilized by secondary users to be aware of the wireless environment evolution and users must change their behaviour rapidly to comply with interference constraints.

Section 4 describes the detection algorithm that is based on estimating the BER at RSU. Section 5 gives the derivations of spectrum utilization under periodical sensing, simultaneously sensing with fixed window and adaptive window, as well as cooperative sensing with simultaneous sensing and BER detection.

So spectrum utilization η period in an ideal periodical spectrum sensing system is obtained as: eta^{period}_{ideal} = frac{bar{T}_{H}^{d}}{bar{D}_{H}} = 1-f_{sens}W, (47).

This is reasonable because the spectrum hole is not used to transmit data in each instance of periodical spectrum sensing while our proposed model can sense and transmit data at the same time.

First, at TSU, periodical spectrum sensing cannot determine the periodical duration of spectrum sensing.

where f sens is the frequency of periodical spectrum sensing.

One can show that the simultaneous sensing/transmitting algorithm wastes less spectrum hole durations than periodical spectrum sensing.