Wireless communications device allowing a soft handoff procedure in a mobile communications system
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United States of America Patent
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Apr 27, 2004
Grant Date -
N/A
app pub date -
Jun 28, 1999
filing date -
Jun 28, 1999
priority date (Note) -
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Abstract
A wireless communications device includes an antenna that receives a first signal at a first radio frequency and a second signal at a second radio frequency and converts the first and second signals into a composite radio frequency (RF) signal. A first oscillator outputs a first oscillator signal at a first frequency and a second oscillator outputs a second oscillator signal at a second frequency. A demodulator receives the composite RF signal and the first and second oscillator signals. The oscillator signals are selected so that the demodulator generates a low frequency signal with components of the first and second signals occupying a common frequency band. The wireless communications device allows executing a 'Soft Handoff' even when the first and second radio frequencies are different.
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