Results 241 to 250 of about 522,687 (294)

Continuous Phase Modulation--Part I: Full Response Signaling

IEEE Transactions on Communications, 1981
The continuous phase modulation (CPM) signaling scheme has gained interest in recent years because of its attractive spectral properties. Data symbol pulse shaping has previously been studied with regard to spectra, for binary data and modulation index 0.5.
Aulin, Tor, Sundberg, Carl-Erik W.
openaire   +4 more sources

Convolutional Coding Combined with Continuous Phase Modulation

IEEE Transactions on Communications, 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 ...
Pizzi, Steven V., Wilson, Stephen G.
openaire   +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
openaire   +3 more sources

Coded continuous phase modulation using ring convolutional codes

IEEE Transactions on Communications, 1995
Summary: Rate 1/2 convolutional codes over the ring of integers modulo \(M\) are combined with \(M\)-ary continuous phase modulation (CPM) schemes whose modulation indices are of the form \(h=1/M\). An \(M\)-ary CPM scheme with \(h=1/M\) can be modeled by a continuous-phase encoder (CPE) followed by a memoryless modulator, where the CPE is linear over ...
Rimoldi, Bixio, Li, Quinn
openaire   +3 more sources

Nonlinear continuous phase modulation

IEEE Transactions on Communications, 1994
A class of nonlinear CPM signals is introduced by extending nonlinear CPFSK signals to other forms of frequency pulses. The distance results and spectral properties of nonlinear CPM signals are reported. Bit error probabilities of nonlinear CPM signals are simulated in presence of adjacent channel interference. >
J.P. Fonseka, null Rongqiang Mao
openaire   +1 more source

Coded nonlinear continuous phase modulation

Eleventh Annual International Phoenix Conference on Computers and Communication [1992 Conference Proceedings], 1992
A class of nonlinear continuous phase modulation (CPM) signals is introduced by extending nonlinear continuous phase frequency shift keying (CPFSK) signals. Coding is considered to further improve the performance of nonlinear CPM signals. Numerical results indicate that both uncoded and coded CPM signals achieve attractive minimum Euclidean distances ...
J.P. Fonseka, T.R. Mao
openaire   +1 more source