Importance

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Abstract

A wireless telephone system having a plurality of wireless handsets and a base unit, the base unit having a base transceiver. Each handset has a handset transceiver for establishing a wireless link over a shared channel with the base unit via the base transceiver, wherein the base transceiver transmits to a given handset transceiver a forward signal at a carrier frequency. Each handset transceiver has a receiver having a carrier tracking loop for detecting and removing a carrier offset from the forward signal; a transmitter for transmitting to the base transceiver a return signal; and an oscillator, independent of a base oscillator of the base transceiver on which the carrier frequency is based, for driving the receiver and transmitter of the handset. The handset transmitter comprises a prerotator that prerotates the return signal in accordance with the carrier offset detected by the carrier tracking loop so that the return signal will be received by the base transceiver with substantially no carrier offset.

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First Claim