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Hybrid Maximum Likelihood Modulation Classification for Continuous Phase Modulations
IEEE Communications Letters, 2016In this letter, we propose a hybrid maximum likelihood (HML) classifier for continuous phase modulation (CPM). To the best of our knowledge, the proposed likelihood function is the first one for CPM signals that is based on two of its main features: nonlinear waveform, which is represented with its principal components, and signal memory, which is ...
Yabo Yuan, Peng Zhao, Bo Wang, Bin Wu
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A Method of Moments Estimator for Modulation Index of Continuous Phase Modulation
2019 International Conference on Computing, Networking and Communications (ICNC), 2019A novel non data-aided estimator based upon the method of moments is proposed for estimating the modulation index of continuous phase modulation (CPM) schemes. Analytical expressions are derived for the asymptotic (large data record N) mean and variance of the estimator using truncated Taylor series.
Ihtisham Khalid +3 more
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Efficient estimation of continuous phase modulation with unknown carrier phase
IEEE Transactions on Communications, 1997Summary: An efficient algorithm is presented for the estimation of continuous phase modulation (CPM) sequences over the Gaussian channel with unknown carrier phase. It operates on the excess phase trellis like Viterbi algorithm, except that it is not an maximum-likelihood (ML) estimator. Its decision metric for survivor selection at each node is chosen
Yew Kong Some, Pooi Yuen Kam
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Carrier Phase and Clock Recovery for Continuous Phase Modulated Signals
IEEE Transactions on Communications, 1987This paper presents an analysis of a synchronization circuit to be used for carrier-phase and symbol-timing recovery in continuous phase modulation systems. M -ary modulation formats with arbitrary pulse shaping and rational modulation indexes are assumed. Circuit performance is expressed in terms of variances of phase and timing errors.
D'ANDREA, NUNZIO ALDO +2 more
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Modulation Recognition in Continuous Phase Modulation Using Approximate Entropy
IEEE Transactions on Information Forensics and Security, 2011Modulation recognition finds its application in today's cognitive systems ranging from civilian to military installations. Existing modulation classification algorithms include classic likelihood approaches and feature-based approaches. In this study, approximate entropy, a nonlinear method to analyze a time series, is proposed as a unique ...
Saurabh U. Pawar, John F. Doherty
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A New PAM Decomposition for Continuous Phase Modulation
2006 40th Annual Conference on Information Sciences and Systems, 2006The Laurent decomposition expresses any binary single-h continuous phase modulated signal as the finite summation of pulse amplitude modulated (PAM) waveforms, and the resulting signal space is so constructed that the CPM signal can usually be synthesized with a reasonable degree of accuracy by using only the "main" PAM component pulse. This derivation
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Non data-aided estimation of the modulation index of continuous phase modulations
IEEE Transactions on Signal Processing, 2004In this paper, a new non data-aided estimator of the modulation index of continuous phase modulated (CPM) signals is proposed. It is based on the observation that the inverse of the index is the smallest positive real number a CPM signal should be raised to in order to generate a sinusoid of period 2T, where T is the symbol period.
Bianchi, P. +2 more
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Spectrally Efficient Multiuser Continuous-Phase Modulation Systems
2010 IEEE International Conference on Communications, 2010In this paper we improve the spectral efficiency of continuous-phase modulations (CPM) when used in frequency-division multiplexing (FDM) systems with tight carrier frequency spacing. We show that significant improvements can be achieved applying a low-complexity iterative inter- channel interference (ICI) cancellation algorithm.
Alberto Perotti +2 more
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Equalization algorithms in the frequency domain for continuous phase modulations
GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005In this paper, novel equalization algorithms for continuous phase modulations (CPMs) are illustrated. Both conventional (linear and decision-feedback) and turbo equalization techniques are derived using the Laurent decomposition of CPM signals. All of them operate in the frequency domain and process two samples of the received signal per channel symbol.
PANCALDI, Fabrizio +1 more
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A decision-feedback phase-tracking receiver for continuous phase modulation
IEEE Transactions on Communications, 1997In this letter, a new recursive structure of a decision-feedback (DF) phase-tracking receiver for continuous phase modulation (CPM) is derived. This receiver uses the previously detected symbols to continuously estimate the initial phase in the current symbol and thus makes optimum coherent detection.
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