Results 291 to 300 of about 623,711 (334)

Cosinusoidal Phase Modulation Jamming Using Tunable Metasurface Against SAR–GMTI

IEEE Transactions on Antennas and Propagation
Ground moving target indication (GMTI) in the synthetic aperture radar (SAR) system enables high resolution, all-weather, and all-day imaging and detection of moving targets, posing a significant threat to high-value moving targets.
Huilin Mu, Chang Ding, Fanyi Meng, Yun Zhang, Jiafu Wang   +4 more
semanticscholar   +1 more source

Efficient estimation of continuous phase modulation with unknown carrier phase

IEEE Transactions on Communications, 1997
Summary: 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
openaire   +1 more source

Carrier Phase and Clock Recovery for Continuous Phase Modulated Signals

IEEE Transactions on Communications, 1987
This 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, MENGALI, UMBERTO, REGGIANNINI, RUGGERO   +2 more
openaire   +2 more sources

On the blind estimation of the parameters of continuous phase modulated signals

IEEE Journal on Selected Areas in Communications, 2005
In this paper, a blind estimator of the technical parameters of continuous phase modulated (CPM) signals is proposed. It consists in estimating jointly the modulation index, the symbol period and the frequency offset. It is based on the following observations.
Bianchi, P., Loubaton, Philippe, Sirven, F.   +2 more
openaire   +2 more sources

A New PAM Decomposition for Continuous Phase Modulation

2006 40th Annual Conference on Information Sciences and Systems, 2006
The 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
openaire   +1 more source

Equalization algorithms in the frequency domain for continuous phase modulations

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005
In 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, VITETTA, Giorgio Matteo   +1 more
openaire   +2 more sources

A simplified continuous phase modulator technique

IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 1994
A low cost GMSK (Gaussian minimum shift keying) modulation technique is presented. GMSK is chosen as an example although the technique is suitable for any continuous phase constant envelope modulation with discriminator, differential or coherent detection in the targeted receiver.
T.A.D. Riley, M.A. Copeland
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

Constrained envelope continuous phase modulation

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring., 2004
We develop a coded modulation system with continuous phase and a small controlled envelope variation. We call the system constrained envelope continuous phase modulation (ceCPM) and show that, there is a gain for ceCPM over CPM under the same spectrum constraint. With normalized amplitude varying in the interval {1/spl plusmn/0.2} the gain for ceCPM is
T. Svensson, A. Svensson
openaire   +1 more source

Turbo coded continuous phase modulation

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277), 2002
Continuous phase modulation (CPM) provides an attractive option for spectrally efficient communications systems. Turbo-coding combined with CPM has the potential to result in a spectrally efficient scheme that is also energy efficient in that it yields low error rates at low signal-to-noise ratios. In this paper we consider the concatenation of a turbo
A.Z. Yilmaz, W.E. Stark
openaire   +1 more source