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Digital Down Converter System improving the computational complexity  

Moon, Ki-Tak (충북대학교 전자정보대학 전파통신공학과)
Hong, Moo-Hyun (충북대학교 전자정보대학 전파통신공학과)
Lee, Joung-Seok ((주)삼우 이.피.씨)
Kim, Kyung-Seok (충북대학교 전자정보대학 전파통신공학과)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.10, no.3, 2010 , pp. 11-17 More about this Journal
Abstract
Multi-standard, multi-band, multi-service system to ensure a flexible interface between the SDR (Software Defined Radio) technology for the implementation of the Stability and Low-Power, Low-Calcualrion DDC (Digital Down Conversion) technology is essential. DDC technology consists of a digital channel filter. This is a typical digital filter because of the limited fisheries are vulnerable to overflow and rounding errors are drawbacks. In this paper, we overcome this disadvantage, we propose the structure of the DDC. The way WDF (Wave Digital Filter) Structural rounding error due to the structural resistance to noise. Therefore, This is the useful structure when the filter coefficients's word length is short. In addition, since IIR filters based on FIR filters based on the amount of computation is reduced because fewer than filter's tap. The proposed structure is used in DDC that CIC (Cascaded Integrator Comb) filter, WDF, IFOP (Interpolated Fourth-Order Polynomials) were analyzed with respect to, the results were confirmed by computer simulation.
Keywords
SDR; Multirate Filter; DDC;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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