Digital terrestrial video broadcasting systems based on orthogonal frequency division multiplexing (OFDM), such as second generation of digital standard (DVB-T2), often include carriers reserved for peak-to-average power ratio (PAPR) reduction. This paper presents a low-complexity PAPR reduction method that inserts coded data onto subset carriers. Using differential binary phase shift keying (D...

The three pulse photon echo peak shift technique was used to study solvation dynamics in acetonitrile ͑297 K͒, methanol ͑297 and 323 K͒, and ethylene glycol ͑297 and 397 K͒ utilizing the tricarbocyanine laser dye, IR144, as a probe. The spectral density, ␳͑␻͒, governing the solute-solvent interaction was obtained for each solvent and temperature through numerical fitting of the three pulse photon echo ...

In this investigation internal friction of cold worked 304L austenitic stainless steel was measured and the new peaks (PlIP2,P3) were found. The height of those peaks increased with cold work degree. The temperature of the main peak P3 was 33513340K at the frequency of -1,000Hz. The activation energies and frequency factors were obtained from peak shift. The values were 0.4evl 0.4evl 0.6ev and ...

Systematic experimentation on grain-boundary sliding of ceramics with a glassy film at grain boundaries has been carried out by low-frequency internal friction technique up to =2200K. A model silicon nitride polycrystal was selected for this basic investigation in which the grains were continuously encompassed by a nanometre-sized film of pure SiO, glass. The SiO, film was also doped with incre...

the electronic absorption spectral line shape of a diatomic molecule with harmonic potential curves is calculated using the time correlation function formalism. both the equilibrium shift and the frequency shift of the two linking electronic states ate taken into account. the spectrum is also calculated using the cumulated expansion which is related to the correlation function of the time-depen...

The vibrational motions of atomic adsorbates on surfaces can be probed by helium atom scattering. The experimental observable is the dynamic structure factor, which shows an inelastic peak around the vibrational frequency of the isolated adsorbates known as the frustrated translational or T-mode peak. In this paper we develop a theory for the line shape of this peak, as well as for its temperat...

The notion of the rotational frequency shift, an analog of the Doppler shift, is introduced. This new frequency shift occurs for atomic systems that lack rotational invariance, but have stationary states in a rotating frame. The rotational frequency shift is given by the scalar product of the angular velocity and the angular momentum of the emitted photon in full analogy with the standard Doppl...