Now showing items 1-10 of 10
Double-zipper: multiple access with zigzag decoding
As a building block toward a simple and scalable solution to massive random access, we consider two-user multiple access with ZigZag decoding, with no need for any coordination or codebook differentiation. We derive ...
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Search-free precoder selection for 5G new radio using neural networks
We propose a search-free precoder selection method with neural networks motivated by the fact that large codebook sizes are adopted in 5G New Radio (5G-NR). The proposed method does not require an explicit codebook search ...
Analysis of DF relay selection in massive MIMO systems with hardware ımpairments
We consider a massive multiple-input multiple-output (m-MIMO) system in which a source communicates with a destination with the help of multiple single-antenna decode-and-forward (DF) relays. Employing optimal relay ...
Rate selection for wireless random access networks over block fading channels
We study uncoordinated random access over fading channels where each user independently decides whether to send a packet or not to a common receiver at any given time slot. Specifically, we develop an information theoretic ...
On secure communications over gaussian wiretap channels via finite-length codes
Practical codes for the Gaussian wiretap channel are designed aiming at satisfying information-theoretic metrics to ensure security against a passive eavesdropper (Eve). Specifically, a design criterion is introduced for ...
Unmanned aerial vehicle assisted communications and networking
In 5G and beyond networks, the explosive data and the massive connections are some of the key challenges. To alleviate the pressure on the ground networks and reduce the cost of densely deployed small cells, unmanned aerial ...
Energy harvesting and wireless power transfer enabled wireless networks
Development of wireless communication networks, connected devices, and improvement of Internet of Things (IoT) will deeply impact in every aspect of human life. In future mobile systems, a tremendous number of low-power ...
Coded caching with user grouping over wireless channels
We study coded caching over non-ergodic fading channels. As the multicast capacity of a broadcast channel is restricted by the user experiencing the worst channel conditions, we formulate an optimization problem to minimize ...
Coding for two-user energy harvesting interference channel
A two-user interference channel with energy harvesting transmitters, each equipped with a finite battery, is considered. Achievable rate regions (ARRs) considering independent and identically distributed Shannon strategies ...