Results 211 to 220 of about 367,994 (260)
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Multiplier-free Carrier Phase Estimation for Low Complexity Carrier Frequency and Phase Recovery
National Fiber Optic Engineers Conference, 2012Carrier phase estimation for QPSK modulation is demonstrated using only real-valued additions without any multiplication or angle computation. Based on simulation and offline data, the same performance as the widely considered 4th-power algorithm is reached.
J. Qi, F. N. Hauske
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Carrier and Symbol Phase Synchronizers.
2012In this work, we will study the carrier phase Lock Loop (CPLL) when the input carrier changes its shape. The CPLL has four prototypes which are the analog, the hybrid, the combinational and the sequential. The input carrier can be a sinusoidal wave, a triangular wave or a rectangular wave.
Reis, A.D. +3 more
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2003
Processing of GLONASS carrier phase observations differs from that of GPS. These differences are briefly reviewed. Presently GLONASS does not contain selective availability (SA). Simply graphing between-satellite differences reveals parts of SA that is implemented on GPS satellite signals.
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Processing of GLONASS carrier phase observations differs from that of GPS. These differences are briefly reviewed. Presently GLONASS does not contain selective availability (SA). Simply graphing between-satellite differences reveals parts of SA that is implemented on GPS satellite signals.
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Carrier Wave Phase Synchronizers
2009 Fourth International Conference on Digital Telecommunications, 2009This work study four carrier wave phase synchronizers (CWPS) or carrier wave Phase Lock Loop (CWPLL).The VCO (Voltage Controlled Oscillator) output of the phase synchronizer synchronizes directly with the input carrier wave.We consider four carrier synchronizers namely the analog, hybrid, combinational and sequential.
António D. Reis +3 more
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Carrier-Envelope Phase Stabilization
2013After introducing some fundamental concepts and definitions for carrier-envelope stabilization schemes and frequency combs, measurement schemes for the carrier-envelope phase of oscillators and amplified systems are discussed. In particular, care is taken to point out typical problems in the experimental implementation of such schemes and to indicate ...
Günter Steinmeyer +2 more
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Multiple-phase codes for detection without carrier phase reference
IEEE Transactions on Information Theory, 1998Summary: The authors consider the construction and analysis of linear block codes for \(M\)-ary phase-shift keying that can be decoded without carrier phase synchronization. Under these circumstances, the function that has a significant impact on performance is the noncoherent distance, analogously to the Euclidean distance for the coherent case.
Feng-Wen Sun, Harry Leib
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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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Phase comparison carrier relaying
Electrical Engineering, 1953THE ADDITION OF a third terminal or a transformer bank to a 2-terminal line section has economic advantages, but presents problems when using phase comparison carrier relaying on such a line. In this type of relaying, the phase angles of the currents at the line terminals are compared over a carrier channel.
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The First Carrier Phase Tracking and Positioning Results With Starlink LEO Satellite Signals
IEEE Transactions on Aerospace and Electronic Systems, 2022Zaher Kassas +2 more
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