In this chapter, a novel receiver for Hexagonal Multicarrier Transmission (HMT) system based on the maximizing Signal-to-Interference-plus-Noise Ratio (Max-SINR) criterion is proposed. Theoretical analyses show that there is a timing offset between the prototype pulses of the proposed Max-SINR receiver and the traditional projection receiver. Meanwhile, the timing offset should be matched to th...

We present a theoretical treatment for generalized dressed and doubly-dressed multi-wave mixing processes. Co-existing four-wave mixing (FWM), six-wave mixing (SWM) and eight-wave mixing processes have been considered in a closed-cycle five-level system. Due to constructive interference of the secondarily-dressed and primarily-dressed excitation pathways, the FWM and SWM signals are greatly enh...

We present a detailed theoretical study on the photoionization from the bound excited  state of  to continua dominated by multiple doubly excited resonance series embedded in multiple single-ionization channels between the  = 2 and  = 3 thresholds. In addition to identifying the individual resonance series, our investigation has also demonstrated unambiguously the level crossing between ov...