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Cooperative transmit beamforming (CTB) is a practical approach for addressing the challenging problem of spectrum scarcity in broadband 5G wireless communication systems. It is a technique that allows a group of secondary users (SUs), each equipped with a single omni-directional antenna, to collaborate and steer the signal towards the intended receiver. CTB allows SUs to co-exist with primary users...
Molecular communication is the most promising approach for the communication in nanonetwork. However, the reliability of existing system degrades rapidly when the distance between transmitter and receiver increases. In this paper, we propose and evaluate a cooperative molecular communication solution that uses signal repeating to improve system reliability. The system has low complexity. Simulation...
A new graph modulation scheme is proposed for massive multiple-input multiple-output (MIMO) systems with a large number of transmit antennas. Each data symbol is transmitted in the form of multiple weighted replicas. The replicas from different symbols are multiplexed onto a two-dimensional (2D) space-time grid, which is formed by multiple transmit antennas in the space domain and different transmission...
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