Apparatus for controlling wide-band signal transmission gain in wireless communication systems and signal processing method of the same
First Claim
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1. An apparatus for controlling a wide-band signal transmission gain, the apparatus comprising:
- a baseband processor generating a plurality of baseband digital signals and outputting the generated baseband digital signals by controlling gains of the generated baseband digital signals;
a multi-intermediate frequency (IF) converter converting the plurality of baseband digital signals output from the baseband processor into digital IF signals and multiplexing the converted digital IF signals and outputting the multiplexed digital IF signals; and
a digital-to-analog converter converting the multiplexed digital IF signals output from the multi-IF converter into analog IF signals, whereinthe baseband processor controls the gains of the baseband digital signals according to an amplitude characteristic of a frequency response depending on a sampling scheme of the digital-to-analog converter.
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Abstract
Disclosed are an apparatus for controlling a wide-band signal transmission gain, which differently applies a transmission gain by the unit of an intermediate frequency (IF) at a transmitting side of a wide-band multi-IF wireless communication system which can convert multiple baseband digital signals into IF signals and thereafter, multiplex and simultaneously transmit the converted IF signals and a signal processing method of the same.
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10 Claims
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1. An apparatus for controlling a wide-band signal transmission gain, the apparatus comprising:
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a baseband processor generating a plurality of baseband digital signals and outputting the generated baseband digital signals by controlling gains of the generated baseband digital signals; a multi-intermediate frequency (IF) converter converting the plurality of baseband digital signals output from the baseband processor into digital IF signals and multiplexing the converted digital IF signals and outputting the multiplexed digital IF signals; and a digital-to-analog converter converting the multiplexed digital IF signals output from the multi-IF converter into analog IF signals, wherein the baseband processor controls the gains of the baseband digital signals according to an amplitude characteristic of a frequency response depending on a sampling scheme of the digital-to-analog converter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A signal processing method of an apparatus for controlling a wide-band signal transmission gain, the method comprising:
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generating a plurality of baseband digital signals; controlling gains of the plurality of generated baseband digital signals; converting the baseband digital signals having the controlled gains into digital intermediate frequency (IF) signals; multiplexing the converted digital IF signals; and converting the multiplexed digital IF signals into analog IF signals, wherein in the controlling of the gains, the gains of the baseband digital signals are controlled according to an amplitude characteristic of a frequency response depending on a sampling scheme at the time of converting the multiplexed digital IF signals into analog IF signals. - View Dependent Claims (9, 10)
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Specification