Also referred to as quota control, it is a method of selecting subjects for a study. The subjects are already chosen for specific characteristics such as age, sex, education, etc.The quota sampling assures the proper proportion of these traits in the group.lso referred to as quota control, it is a method of selecting subjects for a study. The subjects are already chosen for specific characteristics such as age, sex, education, etc.
In contrast, a broadband signal is a signal which does not occupy the lowest range, but instead a higher range, 1MHz to 3MHz, for example. A wire may have only one baseband signal, but it may hold any number of broadband signals, because they can occur anywhere in the spectrum.
A typical base station antenna array mounted on a tower. As you drive along the highway, you may notice cellular towers or cellular base stations appearing every few miles. A base station is the interface between wireless phones and traditional wired phones. Itâs what allows you to use your cell phone to call your home phone. The base station, a wireless system, uses microwave radio communication. It is composed of several antennas mounted on a tower and a building with electronics in it at the base. When you make a call on your cell phone, the cell phone and base station communicate back and forth by radio, and the radio waves they use are in the microwave region of the electromagnetic spectrum.