DCNN Architecture Based Accurate Fingerprint Model Localization for Massive MIMO-OFDM System

Fingerprint technology is an exciting facility to locate mobile terminals (MTs) in the rich surrounding areas like metropolitan and enclosed corridor. In this essay discuss the origin of the vast multifaceted frequency-division (OFDM) multiplexing structures with deep-convolution neural networks (DCNNs) centered on the fingerprint. We look at these systems. First recommend an effective angle-relevant amplitude matrix (ADCAM) fingerprint acquiring procedure, providing extreme resolution quality in delay and angle of large MIMO OFDM systems. A DCNN-enabled localization method is then proposed to overcome the modeling error for calculating fingerprint similarity. The definition of DCNN is known as well as DCNN regression. A hierarchic DCNN design is introduced for practical implementation. In a geometry-based following of sign the yield of the DCNN confinement framework is tried by methods for a recreation. Numerical discoveries show that DCNN is amazing at accomplishing high limitation explicit and raising overhead stockpiling and computational intricacy

Kajian Inversi Tomografi Seismik Refraksi Menggunakan Kode PROFIT

Metode seismik refraksi merupakan salah satu metode geofisika yang digunakan dalam kajian geofisika dekat permukaan. Metode ini masih memiliki ambiguitas dalam penggambaran model kecepatan bawah permukaan, terutama untuk model geologi yang kompleks dan kasus low velocity layer. Pemodelan dengan inversi tomografi pada metode seismik refraksi dapat digunakan sebagai solusi. PROFIT (Profile Forward and Inverse Tomographic modeling) telah dikembangkan dengan kombinasi inversi dan forward modelling tomografi 2D yang dapat diaplikasikan pada data seismik aktif di laut dan di darat dengan kondisi geologis yang kompleks. Pada penelitian ini, kode PROFIT digunakan untuk pemodelan maju (forward modelling) dan pemodelan balik data sintetik dengan fitur low velocity layer, yaitu model goa dan model intrusi. Posisi goa sintetik dapat direkonstruksi cukup baik yaitu pada jarak 160 m hingga 270 m dari bagian awal lintasan dan elevasi 80 m hingga 30 m, namun nilai kecepatan yang dihasilkan berbeda dengan model sintetiknya, yaitu 1,2 km/s sampai 1,6 km/s. Pada model intrusi, tubuh intrusi batuan tipe dyke dapat direkonstruksi cukup baik yaitu pada jarak 250 m hingga 500 m dari bagian awal lintasan dengan elevasi 170 m serta memiliki kecepatan yang sama dengan model sintetik yaitu 4 km/s. Setengah tubuh intrusi tipe sill dapat direkonstruksi pada posisi yang cukup tepat yaitu pada jarak 1100 m sampai 1350 m dengan elevasi 90 m dan kecepatan yang tepat yaitu 4 km/s. Hasil inversi tomografi menggunakan PROFIT sangat dipengaruhi oleh rentang kecepatan model awal dan nilai SM (Smoothing Matrix) dan AM (Amplitude Matrix).

Grid Structure Damage Location Base on Cross-Correlation Function

According to the regular pattern of the grid structure truss, learning from the methods applied to composite damage detection, for grid structure, the paper proposed the concept of the amplitude matrix which comes from cross-correlation function of response signals. A corresponding amplitude distribution map can be obtained. The injuries in different position bring different amplitude distribution maps. The damage area would be determined by comparing these maps with the map derived from intact structure.

CALCULATION OF TRANSITION AMPLITUDES WITH A SINGLE LANCZOS PROPAGATION

We review in this article a recently proposed energy-global method that is capable of calculating the entire transition amplitude matrix with a single Lanczos propagation. This method requires neither explicit computation nor storage of the eigenfunctions, rendering it extremely memory efficient. Procedures are proposed to handle situations where "spurious" eigenvalues aggregate around true eigenvalues due to round-off errors. This method is amenable to both real-symmetric and complex-symmetric Hamiltonians. Applications to molecular spectra and reactive scattering are presented. Its relationships with other methods are also discussed.

Waldmann-Snider Collision Integrals and Nonspherical Molecular Interaction

The binary scattering amplitude matrix is derived from the general interaction potential between linear molecules. The first order distorted wave Born approximation (DWBA) is used which is applicable for small nonsphericity of the interaction. The molecular cross sections determining the most important Waldmann-Snider collision integrals are calculated. In particular, the scattering cross section, the orientation cross sections for vector-and tensor polarization and the reorientation cross sections for the tensor polarization of the rotational angular momenta are treated. For a simple interaction model for HD (HT) molecules the DWBA-scattering amplitude is evaluated analytically. The relaxation cross section of the tensor polarization, σT , and the coupling cross section of friction pressure tensor and tensor polarization, ση,T, are calculated for room temperature and compared with experimental values.