ADSL CODEC Architecture that Minimizes DSP Computational Burden
The optimum analog front-end architecture for ADSL modems results from careful consideration of international ADSL standards, the attenuation characteristics of subscriber loops, the echo return loss of typical hybrid networks and the duplexing method employed. The architecture proposed here is based upon oversampled data converters. It relies on digital filters for standards compliance and minimizes analog filters.
KeywordsQuantization Noise Central Office Analog Filter Standard Compliance Canonical Signed Digit
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- 1.Proposed Summaries for new Recommendations G.992.1, G.992.2, G.994.1, G.995.1, G.996.1 and G.997.1, ITU-Telecommunications Standardization Sector, Study Group 15, Geneva, 12 October, 1998.Google Scholar