Digital filter of a mobile communication system and operating method thereof
First Claim
1. A digital filter of a mobile communication system comprising:
- a first switch outputting digital signals, which are inputted through a plurality of channel paths, in a predetermined order with multiple rate;
a filter unit processing signals inputted from the first switch in a poly-phase method;
a second switch outputting output signals of the filter unit after dividing them by channels; and
a clock unit supplying clock signals to the first switch, the filter unit and the second switch.
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Accused Products
Abstract
A digital filter of a mobile communication system and an operating method thereof for processing digital signals inputted through plural channels: a first switch outputting digital signals, which are inputted through a plurality of channel paths, in a predetermined order with multiple rate; a filter unit processing signals inputted from the first switch in a poly-phase method; a second switch outputting output signals of the filter unit after dividing them by channels; and a clock unit for supplying clock signals to the first switch, the filter unit and the second switch. The digital filter of multi-channels can be integrated/miniaturized with one component and the filter processing rate can be improved.
36 Citations
23 Claims
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1. A digital filter of a mobile communication system comprising:
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a first switch outputting digital signals, which are inputted through a plurality of channel paths, in a predetermined order with multiple rate;
a filter unit processing signals inputted from the first switch in a poly-phase method;
a second switch outputting output signals of the filter unit after dividing them by channels; and
a clock unit supplying clock signals to the first switch, the filter unit and the second switch. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A digital filter of a mobile communication system comprising:
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a first switch interpolating and outputting digital signals inputted in channel unit through a plurality of channel paths in multiple rate;
a filter unit including a plurality of sub-filters processing digital signals inputted from the first switch in a poly-phase method;
a second switch re-arranging output signals of an adder by channels and outputting them; and
a clock unit supplying multiple clock signals to the first switch, the filter unit and the second switch. - View Dependent Claims (8, 9, 10)
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11. A digital filter of a mobile communication system comprising:
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a first switch interpolating digital signals inputted in ×
1 chip rate through a plurality of channels and outputting after arranging them in parallel sequentially;
a plurality of registers storing and shifting the digital signals inputted from the first switch;
a plurality of multipliers multiplying the signals inputted from the registers in respective channel unit by corresponding coefficients;
an adder for adding output signals of the multipliers;
a second switch re-arranging output signals of the adder by channels and outputting them; and
a clock unit supplying clock signals of N chip rate (N is 1 or larger natural number) in order to process the digital signals. - View Dependent Claims (12, 13)
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14. An operating method of a digital filter in a mobile communication system processing digital signals inputted through a plurality of channels,
wherein the digital signal is filtered in a poly-phase method based on clock signals supplied in multiple rate.
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16. An operating method of a digital filter comprising:
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inputting respective digital signals through a plurality of channels;
filtering the inputted digital signals in a poly-phase method; and
re-arranging the filtered digital signals by channels and outputting them. - View Dependent Claims (17, 18)
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19. An operating method of a digital filter comprising:
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inputting digital signals into a first switch through a plurality of channels;
outputting the digital signals inputted by channels after interpolating the signals;
repeatedly inputting the interpolated digital signals in multiple rate to filter the signals in a poly-phase method; and
dividing the filtered digital signals by channels in a second switch and outputting them.
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20. A digital filter of a mobile communication system comprising:
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a first device outputting digital signals which are inputted through a plurality of channel paths, in a predetermined order with multiple rate;
a filter unit processing signals inputted from the first device in a poly-phase method;
a second device outputting output signals of the filter unit after dividing them by channels; and
a clock supplying clock signals to the first device, the filter unit and the second device.
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21. A digital filter of a mobile communication system comprising:
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a first device interpolating and outputting digital signals inputted in channel unit through a plurality of channel paths in multiple rate;
a filter unit including a plurality of sub-filters processing digital signals inputted from the first switch in a poly-phase method;
a second device re-arranging output signals of an adder by channels and ouptting them; and
a clock supplying multiple clock signals to the first device, the filter unit and the second device.
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22. A digital filter of a mobile communication system comprising:
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a first device interpolating digital signals inputted in ×
1 chip rate through a plurality of channels and outputting after arranging them in parallel sequentially;
a plurality of registers storing and shifting the digital signals inputted from the first switch;
a plurality of multipliers multiplying the signals inputted from the registers in respective channel unit by corresponding coefficients;
an adder for adding output signals of the multipliers;
a second device re-arranging output signals of the adder by channels and outputting them; and
a clock supplying clock signals of N chip rate (N is 1 or larger natural number) in order to process the digital signals.
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23. An operating method of a digital filter comprising:
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inputting digital signals into a first device through a plurality of channels;
outputting the digital signals inputted by channels after interpolating the signals;
repeatedly inputting the interpolated digital signals in multiple rate to filter the signals in a poly-phase method; and
dividing the filtered digital signals by channels in a second device and outputting them.
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Specification