Noncoherent Block Detection of MDPSK in Cochannel Interference
碩士 === 國立中央大學 === 電機工程學系 === 85 === Because the M-ary differential phase shift keying (MDPSK) has constant envelo-pe and good spectrum efficiency characteristics, it has been used as the stan-dard of the modulation in the mobile communicati...
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ndltd-TW-085NCU004420582015-10-13T17:59:41Z http://ndltd.ncl.edu.tw/handle/48180410666167709546 Noncoherent Block Detection of MDPSK in Cochannel Interference 差分相移鍵調變在同頻道干擾下的非同調相區塊解調 Lee, Chung-Hsing 李忠興 碩士 國立中央大學 電機工程學系 85 Because the M-ary differential phase shift keying (MDPSK) has constant envelo-pe and good spectrum efficiency characteristics, it has been used as the stan-dard of the modulation in the mobile communication systems recently. The IS-54system of the North America and the PHS mobile phones system of Japan, for ex- ample, use pi/4-differential quadrature phase shift keying (pi/4-DQPSK) as themodulation. This project states the influences of the system performance underthe circumstance of cochannel interference. Nyquist shaped pulses are used andnoncoherent block detection is employed at the receiver to analyze and evalua-te the system performance. Block detection means a decision detects multiple-symbol, that is, multiple symbols are detected every decision as opposed to symbol-by- symbol detection. The performance has improved dramatically in com-parison with traditional differential detection as the observation intervalincreases in the thesis. In this project, cochannel interference is modeled asGaussian to be investigated. This project also applies computer simulation tomatch and compare the result of the analysis. In which,the simulation includescochannel interference modeling Gaussian and exact model (with the same modul-ation and data rate as desired signal) and decision feedback demodulation.keyword:MDPSK, cochannel interference, noncoherent block detection, Nyquist shaped pulses,decision feedback Chung Char-Dir 鐘嘉德 1997 學位論文 ; thesis 73 zh-TW |
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碩士 === 國立中央大學 === 電機工程學系 === 85 === Because the M-ary differential phase shift keying (MDPSK) has
constant envelo-pe and good spectrum efficiency characteristics,
it has been used as the stan-dard of the modulation in the
mobile communication systems recently. The IS-54system of the
North America and the PHS mobile phones system of Japan, for ex-
ample, use pi/4-differential quadrature phase shift keying
(pi/4-DQPSK) as themodulation. This project states the
influences of the system performance underthe circumstance of
cochannel interference. Nyquist shaped pulses are used
andnoncoherent block detection is employed at the receiver to
analyze and evalua-te the system performance. Block detection
means a decision detects multiple-symbol, that is, multiple
symbols are detected every decision as opposed to symbol-by-
symbol detection. The performance has improved dramatically in
com-parison with traditional differential detection as the
observation intervalincreases in the thesis. In this project,
cochannel interference is modeled asGaussian to be investigated.
This project also applies computer simulation tomatch and
compare the result of the analysis. In which,the simulation
includescochannel interference modeling Gaussian and exact model
(with the same modul-ation and data rate as desired signal)
and decision feedback demodulation.keyword:MDPSK, cochannel
interference, noncoherent block detection, Nyquist shaped
pulses,decision feedback
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author2 |
Chung Char-Dir |
author_facet |
Chung Char-Dir Lee, Chung-Hsing 李忠興 |
author |
Lee, Chung-Hsing 李忠興 |
spellingShingle |
Lee, Chung-Hsing 李忠興 Noncoherent Block Detection of MDPSK in Cochannel Interference |
author_sort |
Lee, Chung-Hsing |
title |
Noncoherent Block Detection of MDPSK in Cochannel Interference |
title_short |
Noncoherent Block Detection of MDPSK in Cochannel Interference |
title_full |
Noncoherent Block Detection of MDPSK in Cochannel Interference |
title_fullStr |
Noncoherent Block Detection of MDPSK in Cochannel Interference |
title_full_unstemmed |
Noncoherent Block Detection of MDPSK in Cochannel Interference |
title_sort |
noncoherent block detection of mdpsk in cochannel interference |
publishDate |
1997 |
url |
http://ndltd.ncl.edu.tw/handle/48180410666167709546 |
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