초록 ▼

A mobile communication system includes a signal processor, a first memory, a controller, and an input-output controller. The signal processor receives first forward GPS data and transmits backward GPS data. The first memory has a preamble area, a base station information area, a time information are

A mobile communication system includes a signal processor, a first memory, a controller, and an input-output controller. The signal processor receives first forward GPS data and transmits backward GPS data. The first memory has a preamble area, a base station information area, a time information area, and a location information area and stores the backward GPS data, the first forward GPS data, and second forward GPS data received by an exterior GPS receiver. The controller controls data input and output over the first memory and controls transmission of the backward GPS data stored in the first memory to the signal processor. The input-output controller is controlled by the controller and transmits the second forward GPS data to the first memory.

대표청구항 ▼

A mobile communication system includes a signal processor, a first memory, a controller, and an input-output controller. The signal processor receives first forward GPS data and transmits backward GPS data. The first memory has a preamble area, a base station information area, a time information are

A mobile communication system includes a signal processor, a first memory, a controller, and an input-output controller. The signal processor receives first forward GPS data and transmits backward GPS data. The first memory has a preamble area, a base station information area, a time information area, and a location information area and stores the backward GPS data, the first forward GPS data, and second forward GPS data received by an exterior GPS receiver. The controller controls data input and output over the first memory and controls transmission of the backward GPS data stored in the first memory to the signal processor. The input-output controller is controlled by the controller and transmits the second forward GPS data to the first memory. 9. The wireless communication apparatus of claim 8, wherein said means for generating a variable frequency reference signal comprises a voltage-controlled-oscillator. 10. The wireless communication apparatus of claim 9, wherein said means for locking said variable frequency reference comprises a phase comparator having said output signal of said modulation frequency extractor as a first input and said variable frequency reference signal as a second input. 11. In a wireless communication apparatus comprising a transmitter and a receiver, a method of generating a transmit upconversion frequency for use by said transmitter and a receive downconversion frequency for use by said receiver comprising: extracting a modulation frequency from a signal received by said receiver, wherein said modulation frequency is related to the symbol frequency or bit rate of a received signal; deriving said transmit upconversion frequency from said modulation frequency; and deriving said receive downconversion frequency from a separate free running oscillator.