DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Un, Chong-Kwan | - |
dc.contributor.advisor | 은종관 | - |
dc.contributor.author | Kwon, Young-Bin | - |
dc.contributor.author | 권영빈 | - |
dc.date.accessioned | 2011-12-14T02:20:12Z | - |
dc.date.available | 2011-12-14T02:20:12Z | - |
dc.date.issued | 1981 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=63028&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/39535 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 전기 및 전자공학과, 1981.2, [ iv, 49 p. ] | - |
dc.description.abstract | In this thesis, the performances of adaptive differential pulse code modulation (ADPCM) originally proposed by Cummiskey et al. and delayed-decision ADPCM(DD-ADPCM) systems have been studied by computer simulation with particular emphasis on reducing the computational complexity and on improving the performance in a noisy channel. The DD-ADPCM that yields improved performance especially at low bit rates compared with the conventional ADPCM system showed a signal-to-quantization noise ratio (SQNR) gain of about 1dB per one sample delay. To reduce the computational loads that are caused by increment of the delay samples, a block decision scheme has been proposed for the DD-ADPCM. In addition, we have studied the use of convolutional coding and the reducedstate Viterbi algorithm in the DD-ADPCM so as to reduce the effect of noisy channel. The reduced-state Viterbi algorithm yielded almost the same performance as the conventional Viterbi algorithm, while reducing the computational load significantly. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.title | (A) study on the delayed-decision ADPCM systems | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 63028/325007 | - |
dc.description.department | 한국과학기술원 : 전기 및 전자공학과, | - |
dc.identifier.uid | 000791015 | - |
dc.contributor.localauthor | Un, Chong-Kwan | - |
dc.contributor.localauthor | 은종관 | - |
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