A new proposed method for constructing codes that achieves the symmetric capacity (the capacity of the channel with the same probabilities for the inputs), ( ) I W , of any Binary Discrete Memoryless Channel W (B-DMC) will be introduced in this tutorial. This method is based on channel polarization. Channel polarization is the fact that we can synthesize N channels, ( ) { } :1 i N W i N ≤ ≤ , o...

We present a normally-off InAlN-based HEMT where we use a concept of a polarization engineering. MOCVDgrown 0.5 nm AlN/ 1 nm InAlN barrier stack is capped with a 4 nm thick undoped GaN creating a negative polarization charge at a GaN/InAlN heterojunction. Consequently, the transistor channel is depleted from carriers. On the other hand after the GaN cap is removed at access regions, the extrins...

This paper presents a measurement system for directional 3D real-time measurements of the wideband mobile radio channel. The system is based on a spherical antenna array and it enables the complete characterization of the mobile radio channel including time, delay, polarization, and direction in 3D. The measured signal statistics can be used e.g. for developing polarization or pattern diversity...

We demonstrate that dual-channel spectral interferometry in conjunction with a well-characterized reference pulse can be used to time resolve the polarization state of extremely weak ultrashort coherent signals from linear-and nonlinear-optical experiments by measuring the intensity and the phase of two orthogonal polarization components. In this way the signal is completely characterized.

The possibility of beauty baryon polarization measurement by cascade decay angular distribution analysis in the channel Λ J/ψ → pπ−l+l− is demonstrated. The error analysis shows that in the proposed LHC experiment ATLAS at the luminosity 104pb−1 the polarization can be measured with the statistical precision better than δ = 0.010 for Λb and δ = 0.17 for Ξ 0 b .

We have developed a reduced model of the evolution of the polarization states of the channels in a wavelength-division-multiplexed system that follows only the Stokes parameters for each channel. We apply this model to demonstrating that the expected repolarization of polarization-scrambled signals is small. We verify our results by comparing them with numerical simulations with realistic param...

We present the first experimental results for polarization-switched QPSK (PS-QPSK) and make a comparison with polarization-multiplexed QPSK. Our measurements confirm the predicted sensitivity advantage of PS-QPSK. We have also studied the single channel performance after transmission over 300 km and support the results with numerical simulations. It is shown that the two modulation formats have...

In this paper, differential polarization-phase-shift keying (DPolPSK) is proposed for digital lightwave communication, in which information is encoded in both polarization and phase. The DPolPSK symbols are demodulated by optical delayed interference and electrical multilevel detection, without using any polarization control or polarization selection at the receiver. Simulation results show tha...

This paper develops a physical channel model for multiple-antenna systems. The model appropriately abstracts the scattering intensity of physical environments, geometry of antenna arrays and degrees of polarization. Then, we use the model to demonstrate that the “space” in wireless systems is composed of three signal dimensions: wavevector, array and polarization. The impact of physical environ...