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Carrier Frequency Offset Synchronization is play a very important rule in the Distributed Multi antenna system, since the system has different individual clock instead of common clock as in the centralized multi Antenna system. One of the established synchronization methode for different transmitter devices is Costas Loop. Some implementation of the synchronization for distributed multi antenna is...
The Kuramoto oscillator has been widely studied because it can model biological, social, chemical, and engineering problems. Conditions for frequency synchronization of a network of Kuramoto oscillators have been well established, but it depends on the connectivity of the network and on the natural frequencies. In this work we propose a consensus-based control strategy that forces the network to follow...
We consider Kuramoto model of phase oscillators with attractive-repulsive interconnections, that is, part of interconnection gains can be negative. We generalize results on existence of phase locked solutions of input-output weighted sign-symmetric interconnections and present corresponding necessary and sufficient conditions for phase locking. We give an expression for synchronization frequency,...
With the intention of establishing the connectivity between the femtocell and the core network, it is essential to use public network that ultimately creates several challenges for the operators. Therefore, Synchronization is considered corner stone and has become one of the most significant issues in femtocellular networks to ensure a tolerable carrier offset as well as support received signals in...
The precision of clock oscillators used in packet-based network devices is typically low. Thus, multiple nodes in a packet network, driven by different oscillators may transmit at slightly different port speeds, which may result in significant performance issues. In this paper, we show some of the performance issues that may be caused by clock wander. We use the well known benchmark of fully meshed...
This paper considers the time synchronization problem in wireless multihop networks. The objective is to design a protocol that synchronizes the network nodes with respect to one reference node. A set of sender nodes forming a connected dominating set is created to guide the synchronization process in a multihop environment. Each node estimates its clock offset and frequency error parameters to build...
Synchronization of two oscillators coupled via second harmonic is analyzed. The system of two differential equations is given, and, as an example of analysis, the solution for Rayleigh oscillators is found. Identical oscillators, with second harmonic coupling, will oscillate in quadrature at the frequency of individual oscillators, and there is no frequency shift characterizing coupling via first...
Correlative minimum shift keying (MSK), a second order polynomial modulation scheme known as tamed frequency modulation (TFM), is a constant envelope type of modulation with a perfect peak to average power ratio (PAPR), besides the property of low out of band power. We apply the linearized TFM to the single carrier transmission with frequency domain equalization (SC/FDE) concept. We then obtain a...
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