As the demand for sophisticated wireless mobile applications incorporating efficient modulation techniques is ever increasing, more bandwidth is needed to support these applications. However, bandwidth is a limited resource. Also, as the existing spectrum allocation policies of the Federal Communications Commission (FCC) allow spectrum access to licensed users only, it has been proven by variou...

the optical spectrum band positions and epr parameters (g factors g//, g^ and hyperfine structure constants a// and a^) for vo2+ ions in zn(antipyrine)2(no3)2 are theoretically studied from the complete diagonalization (of energy matrix) method (cdm) and the perturbation theory method (ptm). in the two methods, the contributions from the spin–orbit (so) coupling of central 3dn ion and ligand ar...