Results 251 to 260 of about 623,711 (334)

Programmable Interface Atomic Rearrangement for Spatiotemporal Thermal Radiation Tailoring. [PDF]

Research (Wash D C)
Liao X, Luo M, Zhang Z, Jiang Q, Li X, Zeng J, Wang Y, Jiang X, Nong J, Wu J, Liu D, Chen H, He X, Wu X, Li Q, Yang J.   +15 more
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Convolutional Coding Combined with Continuous Phase Modulation

IRE Transactions on Communications Systems, 1985
Background theory and specific coding designs for combined coding/modulation schemes utilizing convolutional codes and continuous- phase modulation (CPM) are presented. In this paper the case of \(r=1/2\) coding onto a 4-ary CPM is emphasized, with short-constraint length codes presented for continuous-phase FSK, double-raised-cosine, and triple ...
Steven V. Pizzi, Stephen G. Wilson
exaly   +3 more sources

Modulation Recognition in Continuous Phase Modulation Using Approximate Entropy

IEEE Transactions on Information Forensics and Security, 2011
Modulation 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
exaly   +3 more sources

(Continuous) Phase Modulation on the Hypersphere

IEEE Transactions on Wireless Communications, 2016
We introduce phase modulation on the hypersphere (PMH) for load-modulated multiple-input multiple-output (MIMO) transmitters with a single central power amplifier. In PMH, the peak to average ratio of the sum power before pulse shaping is 1; thus, the central power amplifier of load-modulated MIMO transmitters does not require any back-off.
Mohammad Ali Sedaghat, Ralf R. Müller, Christoph Rachinger   +2 more
openaire   +2 more sources

A quasi-optimum receiver for continuous phase modulation

IEEE Transactions on Communications, 2000
A simple receiver structure for any continuous phase modulation (CPM) scheme is introduced. Its front end is just the ordinary linear receiver followed by a subinterval sampler, eliminating the need for the standard analog matched filters. Its design is based on the decomposition of the CPM signal in the Walsh signal space.
Weiyi Tang, Ed Shwedyk
exaly   +2 more sources

Hybrid Maximum Likelihood Modulation Classification for Continuous Phase Modulations

IEEE Communications Letters, 2016
In 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
openaire   +2 more sources

Frequency-domain equalization for continuous phase modulation

2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754), 2005
Single-carrier frequency-domain equalization (SC-FDE) is proposed for continuous phase modulation (CPM). Two different discrete representations of the CPM signal are obtained. One is an orthogonal representation obtained from the Gram-Schmidt orthonormalization procedure, and the other is obtained from Laurent's decomposition for binary CPM.
Jun Tan 0002, Gordon L. Stüber
openaire   +2 more sources

Non Data-Aided Estimation of the Modulation Index of Continuous Phase Modulations

IEEE Transactions on Signal Processing, 2004
In 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., Loubaton, Philippe, Sirven, F.   +2 more
exaly   +3 more sources

Continuous phase modulation

IEEE Communications Magazine, 1986
C -E Sundberg
exaly   +2 more sources

RETRACTED ARTICLE: ROF systems performance efficiency based on continuous phase frequency shift keying phase modulation scheme

Journal of optical communications, 2021
Radio over fiber (ROF) technique has been presented with hybrid ordinary modulation technology to achieve improvement in optical communication network performance.
Mahmoud M. A. Eid, Vishal Sorathiya, Sunil P. Lavadiya, Ismail A. Abd El-Aziz, S. Asaduzzaman, Hasin Rehana, Abd El-Naser Ali Mohammed Ibrahim, A. Rashed   +7 more
semanticscholar   +1 more source