Wireless transceiver and frequency plan

Details Wireless transceiver and frequency plan Wireless transceiver and frequency plan

1998-07-10

2000-02-22

Patel, Ajit

Multiplex communications

Communication over free space

Repeater

370335, 370342, 370492, 370441, 455 76, 455563, 375220, H04B 7216

Patent

active

060288507

ABSTRACT:
The present invention provides for an improved transceiver architecture using fewer frequency synthesizers. The number of frequency synthesizers is reduced by utilizing an existing frequency source having a frequency slightly offset from the ideal sampling frequency. In one embodiment, an improved transceiver capable of communicating CDMA encoded signals is presented. The transceiver includes a first frequency synthesizer producing a first mixing tone, a second frequency synthesizer producing a second mixing tone, a first sampling source producing a first sampling signal, and a receiving channel. The receiving channel includes a first mixer, a second mixer, and an analog to digital converter (ADC). The first mixer receives the incoming CDMA signal and the first mixing tone, producing a first IF signal. The second mixer receives the first IF signal and the second mixing tone, producing a second IF signal in response. The ADC receives the second IF signal and the first sampling signal, producing a digital data stream in response, whereby the frequency of the first sampling signal is offset from the frequency of the second IF signal, the digital data having a small amount of error associated therewith in proportion to the small amount of the frequency offset.

REFERENCES:
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5539730 (1996-07-01), Dent
patent: 5566168 (1996-10-01), Dent
patent: 5596600 (1997-01-01), Dimos et al.
patent: 5812522 (1998-09-01), Lee et al.
patent: 5898728 (1999-05-01), Sentz et al.

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