The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Over the last twenty years, a huge number of algorithms trying to mimic biological processes have been proposed for solving hard computational problems. Nevertheless, these bio-inspired algorithms represent only the very first step toward the design of smart adaptive computing devices. In fact, they model only a limited set of the rules underlying the biological processes, thus, omitting fundamental...
We propose a new construction algorithm for Polar codes operating over Additive White Gaussian Noise channels under Successive Cancellation decoding. Our approach is based on tracking the bit error probabilities of the bit channels as they evolve through the decoder, allowing us on the one hand to characterize the performance of these channels, and on the other hand, providing a solid construction...
A new frequency-shift keying continuous phase modulation (CPM) signal, directly inspired from quantum physics, is defined, and its attractive spectral property of single side-band is shown. The principle of the modulator and the demodulator are discussed; and a simplified coherent detector, based on signal correlation using an orthogonal basis, is proposed showing that this new modulation can operate...
It is well acknowledged that one of the key enabling factors for the realization of future 5G networks will be the small cell (SC) technology. Furthermore, recent advances in the fields of network functions virtualization (NFV) and software-defined networking (SDN) open up the possibility of deploying advanced services at the network edge. In the context of mobile/cellular networks this is referred...
This paper presents a channel prediction method for MIMO systems operating at millimeter wave (mmWave) frequencies in 3D propagation environments. Based on recent 3D model for mmWave channels, an ESPRIT/Unitary ESPRIT approach is proposed for jointly extracting the azimuth, elevation and Doppler parameters of the channel. The MMSE minimum description length (MMDL) criterion is utilize for proper selection...
The Internet of Things (IoT) paradigm, supported by the operation of wireless sensor networks (WSNs), has gained a great attention lately and new security concerns and challenges are emerging from its usage. The rising number of cyber threats makes the quest for solutions to promote resilient operations a necessity. A major threat that continues to concern the research community is a denial of service...
In this paper, we investigate the performance of bi-directional full-duplex (FD) systems using spatial modulation (SM) technique, called as FD-SM systems, over Rayleigh fading channels in the presence of imperfect channel state information (I-CSI). The effect of residual loop-interference (LI) due to the FD transmission is also taken into consideration. The upper bounds for bit error rate (BER) expressions...
The measurement of quality and efficiency of a wireless Wi-Fi network is particularly difficult, as there is not a single tool that can record measurements from all sides of the system, i.e. from both the access point and the end-user. Existing tools are able to monitor the overall quality of the wireless network; although they cannot determine how end-users experience the quality of Wi-Fi in a particular...
Cross-layer design is a suitable approach that can address some of throughput challenges for future multimedia applications. In this regard, effective capacity concept offers a suitable metric to assess the implications that physical layer design may have on link layer performance. However, most reported studies in this aspect consider the case of downlink scenario for convenience multiple input multiple...
In this paper, we investigate a disaster management system using D2D cooperative communications. Specifically, we consider two D2D cells, one is in healthy area and the other is in disaster area, where a user equipment (UE) in healthy area aims to assist a UE in the disaster area to recover wireless information transfer (WIT) via an energy harvesting (EH) relay. In the healthy area, a cellular base...
The 5G physical layer will support applications with different requirements, such as high data rate, ultra low power consumption and low latency. Recently, there is significant interest in the design and performance of new waveforms for 5G. One of the most important candidates is the Generalised Frequency Division Multiplexing (GFDM) waveform. The new waveform must support a smooth transition from...
Attacks in Wireless Sensor Networks (WSNs) aim in limiting or even eliminating the ability of the network to perform its expected function. WSNs are networks with limited resources and often deployed in uncontrollable environments that an intruder can easily access. WSN attacks target specific network layer's vulnerabilities but normally affect other layers as well. Local sensor activity at multiple...
Non-Orthogonal Multiple Access (NOMA) is a key multiple access technique for 5th generation (5G) mobile communication systems. In this paper, we propose a capacity-based user selection (NOMA-CUS) algorithm for multiuser multiple input single output (MISO) downlink NOMA system with zero-forcing beamforming. NOMA-CUS algorithm improves the sum rate of the NOMA system by selecting the users in each cluster...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.