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Automatic classification of analog modulation schemes
2012 IEEE Radio and Wireless Symposium, 2012This paper discusses automatic modulation classification (AMC) of analog schemes. Histograms of instantaneous frequency are used as classification features and Support Vector Machines (SVMs) are then applied to classify the unknown modulation schemes. This novel machine-learning based method can insure robustness in a wide range of SNR.
Haifeng Xiao +3 more
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A Module Management Scheme for Dynamic Reconfiguration
2008Wireless sensor nodes are used to sense and transmit information from target region such as nature and industrial environment. In those nodes, dynamic reconfiguration is required to update codes, change functions, and maintain programs, because each node is deployed in a remote region.
Hong Min +5 more
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Multirate Modulation: A Bandwidth- and Power-Efficient Modulation Scheme
IEEE Transactions on Communications, 2005Multirate (MR) modulation resembles block-coded modulation (BCM), since matrices are being used to transform binary input vectors to multilevel output vectors (blocks) of length K. Unlike BCM, attention is given to the spectral shaping of the signal to be transmitted.
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A coded modulation scheme with interblock memory
IEEE Transactions on Communications, 1994Proposes a coded modulation scheme with interblock memory. The proposed scheme has a multi-stage coding structure. However, at some coding stage, the coding designs for every two adjacent blocks are related. Compared to coded modulation schemes for which each block is independent of the others, the introduction of interblock coding provides additional ...
Mao-Chao Lin, Shang-Chih Ma
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A new efficient chaotic modulation scheme
ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240), 2002Chaotic modulation is a way to transmit digital information by means of chaotic signals instead of sinusoids. Currently proposed schemes, obtained from traditional transmission systems by replacing sinusoids with chaotic signals, perform poorly when compared to traditional modulation schemes.
BERNARDINI, Riccardo +1 more
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An intelligent learning scheme for adaptive modulation
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002Over the years adaptive modulation has been shown to improve data throughput and system capacity in a wireless system. The basic idea is to adapt the modulation and/or coding scheme to the fading channel quality, using different schemes for different channel conditions.
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2013
To be considered ultra wideband (UWB) per FCC definition, a signal must satisfy one of the two frequency domain requirements as stated in Chap. 1. One family of signals that satisfy the UWB requirements are impulse radios. There are, however, a number of others. Impulse radios were treated in Chaps. 3 and 4.
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To be considered ultra wideband (UWB) per FCC definition, a signal must satisfy one of the two frequency domain requirements as stated in Chap. 1. One family of signals that satisfy the UWB requirements are impulse radios. There are, however, a number of others. Impulse radios were treated in Chaps. 3 and 4.
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UNMASKING A MODULATED CHAOTIC COMMUNICATIONS SCHEME
International Journal of Bifurcation and Chaos, 1996This paper will address the problem of unmasking a new chaotic communication scheme using synchronizing circuits, where the Lorenz system is modulated by the message and the x-coordinate of the modulated system is added to the message and transmitted to the receiver.
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On the Canonical Module of A 0-Dimensional Scheme
Canadian Journal of Mathematics, 1994AbstractThe main topic of this paper is to give characterizations of geometric properties of O-dimensional subschemes in terms of the algebraic structure of the canonical module of their projective coordinate ring. We characterize Cayley- Bacharach, (higher order) uniform position, linearly and higher order general position properties, and derive ...
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