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Radio Communication Repeaters
What is a Repeater?
A Repeater is a device which will receive a signal on one frequency and re-transmits the signal with increased strength on another frequency simultaneously in a two-way radio communication. In analog signals, it amplifies the power and helps in maintaining the power level.
How it works
- The antenna is used to receive and transmit the signal that goes in and out of the repeater
- The duplexer is the heart of the repeater which isolates the incoming signal from the outgoing signal. This takes care of the fact that the transmitter and receiver should not communicate with one another
- The receiver used is generally a sensitive one which will detect weaker signals
- The controller is the brain of the repeater which will control all operations of a repeater. Based on certain logic, it will decide when to receive signals and when to transmit it by mapping the frequencies
- The transmitter generally consists of a power amplifier, which amplifies the signal power before transmitting it via antenna
Uses of Repeaters in Radio Communication:
With a lot of advancements in radio communications space, people are able to communicate faster and easier than before. But the most important advancement is people can communicate, no matter where they are. The main challenge in this is providing the same signal strength from the transmitter to the receiver. Here are some important uses of repeaters in radio communications.
As we all know, longer the distance a signal must travel, weaker it gets. This phenomenon is called signal attenuation. Repeaters are very essential since it boosts the signal power and reduces signal attenuation drastically during radio communication.
Repeater solves the problem of distance limitations of various transmission including wireless links.
Repeaters are used in cellular communication to handle the hand-off concept, when the user moves out of one cell to another cell. This helps the user to receive a proper signal by making sure that the signal level does not drop.
Repeater can connect networks using different physical transmission media.
Repeaters have little impact on network performance since it does not do any packet processing.
Some repeaters have the inherent ability to detect the collision of packets in a signal transmission and will stop repeating collision fragments to the other cable segments.
Some repeaters will have the intelligence to de-insert themselves from a switch or a hub when excessive errors happen in a cable segment.
Repeaters have the intelligence to submit information about the transmission performance to a central communication management station. These performance information insights will be very helpful to enhance the overall performance of the radio communication.
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