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.
3 Jun. First of all, physical channel and a physical signal are all together different things. A channel can be considered as a medium through which some information is transmitted, where as a signal has a mathematical importance and it is, most of the times generated at the physical layer itself. So this article will speak about the different physical layer signals used at LTE downlink, The downlink signals are broadly classified into two, Reference Signals