发明名称 |
DIGITAL FILTER FOR SOFTWARE-DEFINED RADIO SYSTEM, APPARATUS HAVING THE FILTER AND PROCESSING DIGITAL INTERMEDIATE FREQUENCY BAND SIGNAL AND METHOD THEREOF |
摘要 |
PURPOSE: A digital filter for SDR(Software-Defined Radio) system, an apparatus having the filter and processing digital intermediate frequency band signal and a method thereof are provided to enable hardware devices to share hardware resources with each other by embodying a receiving filter, which can reconfigured with minimum hardware devices, in digital for each communication standard item. CONSTITUTION: A signal received from an antenna(301) is converted into an analog IF signal through an RF signal processor(302). An analog-digital converter(303) converts the analog IF signal into a digital signal and a digital frequency mixer(306) converts the digital signal into a baseband signal. The digital frequency mixer(306) receives an input from a numerically controlled oscillator(307) for calculating a sine function value of digital frequency. A configurable filter building block(309) removes a high band signal from the baseband-converted signal. A configuration processor(308) receives an input from a filter coefficient calculator(305) for transferring a filter coefficient to the configurable filter building block(309). The configuration processor(308) receives an input from an external filter coefficient input unit(304).
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申请公布号 |
KR20040051321(A) |
申请公布日期 |
2004.06.18 |
申请号 |
KR20020079230 |
申请日期 |
2002.12.12 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
JANG, GYEONG HUI;KIM, GWANG SUN;KIM, YUN HUI;LEE, SANG HYEON |
分类号 |
H04B1/40;H04L27/00;(IPC1-7):H04B1/40 |
主分类号 |
H04B1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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