The use of wireless devices has proliferated to an extent that microwave ovens and remote car alarms are now competing to use the part of the radio spectrum that has been their sole domain for many years. The information technology (IT) industry is leading the way with the introduction of many new products with protocols that use existing spread-spectrum technologies. Wireless applications have the advantage that devices can be used without a physical connection between the remote device and the main server. Spread-spectrum technologies allow a single transmitter to interconnect a large number of devices with a minimum of interference. This allows greater flexibility and uses less hardware than a fixed wire network.
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