Generative Adversarial Estimation of Channel Covariance in Vehicular Millimeter Wave Systems

Enabling highly-mobile millimeter wave (mmWave) systems is challenging because of the huge training overhead associated with acquiring the channel knowledge or designing the narrow beams. Current mmWave beam training and channel estimation techniques do not normally make use of the prior beam training or channel estimation observations. Intuitively, though, the channel matrices are functions of the various elements of the environment. Learning these functions can dramatically reduce the training overhead needed to obtain the channel knowledge. In this paper, a novel solution that exploits machine learning tools, namely conditional generative adversarial networks (GAN), is developed to learn these functions between the environment and the channel covariance matrices. More specifically, the proposed machine learning model treats the covariance matrices as 2D images and learns the mapping function relating the uplink received pilots, which act as RF signatures of the environment, and these images. Simulation results show that the developed strategy efficiently predicts the covariance matrices of the large-dimensional mmWave channels with negligible training overhead.Comment: to appear in Asilomar Conference on Signals, Systems, and Computers, Oct. 201

Orhan Veli için, yani yeni nesillerin en büyük şairi için

Taha Toros Arşivi, Dosya No: 39-Orhan Veli-Adnan Veli Kanık. Not: Gazetenin "Günün İçinden" köşesinde yayımlanmıştır.İstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Mahmut Yesari ve yeni eseri

Taha Toros Arşivi, Dosya No: 67-Yesari'ler (Mustafa İzzet-Servet-Afif-Mahmut). Not: Gazetenin "Günün Düşüncesi" köşesinde yayımlanmıştır

Bence...

Taha Toros Arşivi, Dosya Adı: Pierre Loti. Not: Ekte 16 Aralık 1967 tarihine ait belge bulunmaktadır.İstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033)Pierre Loti’ye mektuplar, Zeki Mugaamız bey ve Orhan Koloğlu...Pierre Loti masalındaki “Neyir" Hanımı da Orhan Koloğlu’ya takdim edelim..

Chandra and XMM-Newton observations of the exceptional pulsar PSR B0628-28

PSR B0628-28 is a radio pulsar which was first detected in the X-ray band by ROSAT and then later observed with Chandra and XMM-Newton. The Chandra observation yielded an X-ray luminosity two orders of magnitude higher than what is expected for spin-powered pulsars, also there were no pulsations detected. The XMM-Newton observation, however, reveals pulsations at the expected radio period, P=1.244 s. The simultaneously analyzed spectra also gives a luminosity (in cgs) Log Lx=30.34, which is ~350 times greater than what would be expected from the correlation between Lx-Edot.Comment: 13 pages, 4 figures, to be published in ApJ

Said-i Nursi Efendi

Taha Toros Arşivi, Dosya No: 112-Bediüzzaman Said-i Nursiİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033