Wilayah Rancaekek merupakan salah satu wilayah potential market di Kabupaten Bandung karena letaknya yang strategis sehingga diperlukan kapasitas jaringan sanggup memberikan layanan data pada setiap pengguna sebaik mungkin. Namun, berdasarkan hasil identifikasi Operating Support System berawal dari custumer complain operator, terdapat lima site dengan nilai rata-rata trafik tinggi ditunjukkan p...

This is an analysis of the itinerant model for antiferromagnetism, in which is included both on-site and inter-site electron correlations. We also consider the band degeneration, which brings into the Hamiltonian the on-site exchange interactions. The Green function technique is used and the coherent potential approximation (CPA) decoupling for the on-site Coulomb repulsion. This decoupling com...

This paper surveys the current state-of-the-art in wireless communication technology within vehicles, as well as between vehicles. Different concepts associated with radio frequency bands and wave propagation simulations as they apply to inter-vehicle communication are analyzed. The Medium Access Control (MAC) layer protocols used in inter-vehicle communication are addressed, as are routing pro...

A Ka-band two dimensional synthetic aperture interferometric radiometer (SAIR) called SAIR-2D has been developed for concealed weapon detection. The inter-channel mismatch due to amplitude, phase and group delay differences between each receiving channel pairs can result in an undesired effect called fringe washing function (FWF). As the security application usually needs a wide field of view, ...

This study entailed the development of a K-Band power amplifier (PA). The proposed PA was implemented and verified using 65-nm bulk CMOS process. designed with two stages to obtain sufficient gain in K band. had chip area 0.93×0.47 mm2 including RF DC pads. manufactured design maximum saturation 22.4∼22.7 dBm 19–21 GHz frequency band, added efficiency (PAE) 39 %∼40 %. In two-tone simulation res...

The 5G network is developing rapidly. However, due to spectrum resource limitation, it expected use the ensure high utilization and efficiency, while keeping part of 4G in same band for existing users. Dynamic spectrum-sharing (DSS) technology enables 4G/5G wireless networks coexist scarce resources dynamically allocates band. DSS has been successfully commercialized some countries such as Germ...

Speech enhancement techniques using spectral subtraction have the drawback of generating an annoying musical noise. We develop a new post-processing method for reducing it in each critical-band. In the proposed technique, the difference between tonality coefficients of the noisy speech and the denoised one constitutes one step for detection. Next, using a modified Johnston masking threshold, we...