Subject: Mobile Computing

Difficulty: Medium

Marks: 4 Marks

• The use of repeater in cellular mobile communication system is for extending the range of the reception of the receiver.
• Especially, the repeater is used when it is hard for the transmitted signal to reach up to the receiver set.
• Repeaters are bidirectional in nature and simultaneously send signals to and receive signals from a serving BS. Upon receiving signals from BSs in forward link, the repeater amplifies and reradiates the BS signals to the specific coverage region.
• Repeaters are being widely used to provide coverage into and around buildings, where coverage has been traditionally weak.
• Repeaters do not add any capacity to the system, they just increase the reach of a BS or MS into shadowed areas.