FDM vs. FDMA. Frequency Division Multiplexing, or FDM, is a multiplexing technique for the physical layer that allows multiple low bandwidth signals to share the same high bandwidth frequency range.It is achieved by allocating a smaller frequency range to each signal that is using the same channel.ummary: 1. FDM is a physical layer multiplexing technique, while FDMA is a data link layer access method. 2. Using FDM to allow multiple users to utilize the same bandwidth is called FDMA.
Checking your iron levels is one of the most important tests that everyone should have done on a regular basis as part of a preventive, proactive health screen; it can be done with a simple blood test called a serum ferritin test; your ferritin level should be between 20 and 80 ng/ml, and 40 to 60 is ideal.
Iron and Total Iron-Binding Capacity Do these tests have other names? Iron (Fe), serum iron, TIBC. What are these tests? The serum iron test measure the amount of iron in your blood. The total iron-binding capacity (TIBC) test looks at how well the iron moves through your body. Iron is an important mineral that your body needs to stay healthy. Your body uses iron to make hemoglobin, the protein in your red blood cells that carries oxygen throughout your body.