Frequency reuse is the practice of splitting an area into smaller regions that do not overlap so that each utilizes the full range of frequencies without interference. The introduction of this concept was a major step in the development of mobile phone technology.
Before the advent of cellular phones, radio telephones and other mobile communications devices relied on a single, central antenna tower to service an entire city. Each phone required a large antenna powerful enough to transmit a signal over the potentially great distance to that tower. In addition, there was a limit to the amount of phone traffic that could be supported at a given time because each tower only offered a limited number of channels.
Researchers then realized that they could increase the cap on the number of simultaneous users by applying their current technology to a smaller scale. Accordingly, they introduced frequency reuse. Mobile communications providers increased the total number of towers and reduced the size of each one's service area. Although each tower had a limited number of channels, the non-overlapping nature of the service areas allowed the same frequency to be used in each one without interference. By doing so, mobile communications providers greatly expanded the number of potential users.Learn More
The frequency of a sound is the rate at which wave crests reach a given point. Sound waves propagate outward from their source, as a series of compressions and rarefactions of the surrounding air. The peak of each cycle can be plotted as the crest of a wave, as can the low point or trough. The frequency with which these crests and troughs arrive gives sound its pitch.Full Answer >
Frequency refers to the number of vibrations that an individual particle makes in a specific period of time -- specifically, how often a wave peak goes by. Pitch, on the other hand, refers to the sensation of a frequency -- specifically, how high or low the frequency sounds.Full Answer >
All electromagnetic waves move at the speed of light; subsequently, the wavelength and frequency of waves must be proportional, as the wavelength multiplied by the frequency equals the speed of light. As wavelength increases, frequency decreases, and as wavelength decreases, frequency increases proportionally.Full Answer >
Radio waves range from 300 gigahertz (GHz), or a wavelength of 1 millimeter, to 3 kilohertz (kHz), which corresponds to a wavelength of 100 kilometers. Radio waves are the lowest frequency within the electromagnetic spectrum. The wavelength is the distance from the peak of one wave to the next.Full Answer >