señales - signals

Signaling

Signal usually consists of a variety of electrical and optical patterns, these patterns are transported through wired media such as voltage or waves or light rays.

Common methods of signal transmission are:

1. electrical signals, are transmitted by electrical pulses. in this type of signal impedance is presented that establishes the relationship between voltage and current.

2. optical signals, are transmitted by light pulses.

3. wireless signals, are transmitted by radio waves or microwaves.

Some of the problems that are set for the signal to reach its destination without fail, are:

1. resistance: this is given in the signal that a material is either not allow the passage of electrical current.

2. attenuation: the loss of signal strength.

3. N: is a form of signal distortion.

4. reactance: the opposition offered to the passage of current

signals are very important when you go to transmit information because for them the sender and receiver can have a good communication.