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检索条件"主题词=modulation coding"
7024 条 记 录,以下是4721-4730 订阅
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New views of transfer function based performance analysis of coded modulations
New views of transfer function based performance analysis of...
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Asilomar Conference on Signals, Systems & Computers
作者: D. Kucukyavuz M.P. Fitz Department of Electrical Engineering Ohio State Uinversity USA
Transfer function methods are attractive in the performance analysis of coded modulations since they allow averaging of all possible error event probabilities. However, they can be computationally intensive when the c... 详细信息
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Nonuniformly offset polyphase synthesis of a bandpass signal from complex-envelope samples
Nonuniformly offset polyphase synthesis of a bandpass signal...
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IEEE International Symposium on Circuits and Systems (ISCAS)
作者: D. Scholnik J.O. Coleman Radar Division Naval Research Laboratory Inc. Washington D.C. DC USA
In this paper we consider the synthesis of a bandpass signal from complex-envelope samples using a polyphase conversion structure based on periodically nonuniform output samples. This approach provides the flexibility... 详细信息
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Adaptive coded-modulation in multipath fading channels
Adaptive coded-modulation in multipath fading channels
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IEEE Conference on Vehicular Technology (VTC)
作者: Young Min Kim W.C. Lindsey Communication Science Institute University of Southern California Los Angeles CA USA LinCom Corporation Los Angeles CA USA
We have seen an explosive expansion and growth in wireless communications and a vision of communicating; any-where any-time is becoming reality. Future mobile radio systems are projected to support a data rate of up t... 详细信息
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Analysis of fuzzy logic and autoregressive video source predictors using T-tests
Analysis of fuzzy logic and autoregressive video source pred...
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International Symposium on Signal Processing and Its Applications (ISSPA)
作者: B. Qiu School of Computer Science and Software Engineering Monash University Clayton VIC Australia
This paper presents performance comparison of a fuzzy logic predictor and an autoregressive predictor. Multi-step ahead predictions were made on the traffic intensity of digital video sources coded with an MPEG coder ... 详细信息
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A class-coded modulation method using orthogonal wavelets
A class-coded modulation method using orthogonal wavelets
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IEEE Conference on Wireless Communications and Networking
作者: E. Okamoto Huan-Bang Li M. Tanaka H. Wakana Communications Research Laboratories Kashima Ibaraki Japan
Researchers have studied two types of digital multi-carrier modulation, wavelet packet modulation (WPM), and fractal modulation. The advantage of WPM is that it allows signal time and frequency to be divided and multi... 详细信息
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Iterative decoding of product codes with a priori information over a Gaussian channel for still image transmission
Iterative decoding of product codes with a priori informatio...
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Seamless Interconnection for Universal Services. Global Telecommunications Conference. GLOBECOM'99. (Cat. No.99CH37042)
作者: A. Elbaz R. Ryndiah B. Solaiman O. Ait Sab Department Signal et Communication Technopôle Brest Iroise ENST de Bretagne Brest France IMT Atlantique Bretagne-Pays de Loire Brest Bretagne FR
In this paper we propose an optimized transmission system for still images. This system comprises a VQ source encoder with a compression rate of 9. The source data is encoded using a BCH product code and mapped on a 1... 详细信息
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An active tagging system using circular polarization modulation
An active tagging system using circular polarization modulat...
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Microwave, MTT-S International Symposium
作者: M. Kossel H. Benedickter W. Baechtold Laboratory for Electromagnetic Fields and Microwave Electronics Swiss Federal Institute of Technology Zurich Switzerland
An active read/write microwave tagging system using circular polarization modulation as a novel modulation scheme for RFID systems to reduce demodulation complexity and power consumption on the battery powered tag is ... 详细信息
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Orthogonality division multiple access LTI transmit filters for ISI-channels
Orthogonality division multiple access LTI transmit filters ...
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IEEE International Conference on Communications (ICC)
作者: A.F. Shalash K.K. Parhi Level One Communications New Jersey Design Center Morganville NJ USA Department of Electrical and Computer Engineering University of Minnesota Minneapolis MN USA
In this paper, the problem of multiple access over digital subscriber loops is introduced and defined as FIR LTI filter design over linear dispersive channels. The 2-D FIR CAP/QAM based modulation line code is extende... 详细信息
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Soft-output decoding for concatenated error correction in high-order PRML channels
Soft-output decoding for concatenated error correction in hi...
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IEEE International Conference on Communications (ICC)
作者: H. Sawaguchi S. Mita Central Research Laboratory Hitachi and Limited Kokubunji Tokyo Japan Data Storage and Retrieval Division Hitachi and Limited Odawara Kanagawa Japan
A soft-output decoding scheme was developed for the cyclic-redundancy-check error-correction-code (CRCC) concatenated error correction by applying the list and soft-symbol-output Viterbi algorithm (list-SOVA). By focu... 详细信息
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Discrete multitone modulation with least squares inverse channel filtering
Discrete multitone modulation with least squares inverse cha...
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IEEE International Conference on Personal Wireless Communication
作者: V.U. Reddy B.K. Dey S. Dasgupta Department of Electrical Communication Engineering Indian Institute of Science Bangalore India ECE Department University of Iowa USA
ADSL (asymmetric digital subscriber line) transmission technology meets Internet access requirement quite well and offers telephone companies a technology for connecting virtually all Internet users at megabit rates. ... 详细信息
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