Sufficient conditions are derived under which -ary partialand full-response continuous phase modulation (CPM) space–time (ST) codes will attain both full spatial diversity and optimal coding gain. General code construction rules are desirable due to the nonlinearity and inherent memory of the CPM signals which makes manual design or computer search difficult. Using a linear decomposition of CPM...

In this chapter, the performance improvement obtained from phase modulation (PM) and filtering on return-to-zero (RZ) signal format at the transmitter is investigated. The primary purpose is to understand the mechanism of each type of PM that leads to performance improvement relative to the RZ signal format with no PM. Three types of phase modulation on an RZ pulse train are considered in this ...

This paper presents the comparative study of three phase twenty five level diode clamped and cascaded H-bridge multilevel inverters. The comparison is made in respect of requirement of devices, quality of output voltage and reduction of total harmonic distortion at the multilevel inverter terminals. In this work multicarrier sinusoidal pulse modulation control methods of Phase disposition (PD-P...

Frequency-modulated continuous-wave (FMCW) radars necessitate fast frequency modulation. However, finite loop bandwidth of a phase-locked (PLL) limits the accuracy This paper proposes phase compensation (PC) technique to address this limitation. The synthesizer PLL with PC realizes and precise triangular chirp modulation by adding compensating square wave before integral path filter. is designe...

introduction: the formalin test is the most accepted chemical test for evaluation of nociception. it requires the injection of an adequate amount of formalin into the surface of the hindpaw. formalin test consists of phase 1 (0-7 min) and phase 2 (15-60) in which the animal shows painful behaviors. these phases are separated with a quiet phase named interphase, in which the nociceptive response...

Topological insulators and topological superconductors are distinguished by their bulk phase transitions and gapless states at a sharp boundary with the vacuum. Quasicrystals have recently been found to be topologically nontrivial. In quasicrystals, the bulk phase transitions occur in the same manner as standard topological materials, but their boundary phenomena are more subtle. In this Letter...

A new procedure of trial variational wave functional is proposed for investigating the mass renormailzation and the local structure of the ground state of a one-dimensional quantum sine-Gordon model with linear spatial modulation, whose ground state differs from that without modulation. The phase diagram obtained in parameters (αΛ−2, β2) plane shows that the vertical part of the boundary betwee...

We use super-paramagnetic spherical particles which are arranged in a two-dimensional monolayer at a water/air interface to investigate the crystal to liquid phase transition. According to the KTHNY theory a crystal melts in thermal equilibrium by two continuous phase transitions into the isotropic liquid state with an intermediate phase, commonly known as the hexatic phase. We verify the signi...

We study the formation of domains in a continuous phase transition with a finite-temperature quench. The model treated is the Φ4 theory in two spatial dimensions with global O(2) symmetry. We investigate this using real-time thermal field theory, following Boyanovsky and collaborators, and find that domain sizes appear to be smaller than those produced in an instantaneous quench in the tree-lev...