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In LTE-A (Long Term Evolution-Advanced) network deployed with higher order MIMO (Multiple Input Multiple Output), CRS (Common Reference Signal) is substituted by CSI-RS (Channel State Information Reference Signal) aiming for detecting channel more efficiently. But LTE (Long Term Evolution) legacy UEs (User Equipment) cannot distinguish CSI-RS from data which may deteriorate the LTE UEs' demodulation...
In LTE-A (Long Term Evolution-Advanced) network, CSI-RS (Channel State Information Reference Signal) is substituted for CRS (Common Reference signal) to perform higher order MIMO (Multiple Input Multiple Output). In CoMP (Coordinated Multiple Point Transmission) scenario, the number of REs (Resource Element) occupied by CSI-RS would be multiplied. However, LTE (Long Term Evolution) legacy UEs (User...
A semifloating-gate transistor had been proposed and its memory function has been demonstrated recently. In this paper, we further investigate its temperature dependency, device scalability, and device modeling. The high-temperature behavior is studied by measuring its endurance, retention, and disturbance immunity at 85 °C. The device scalability down to the 14-nm technology node is investigated...
In this paper, we consider a relay system with a number of potential relay nodes. We propose several relay assignment protocols to select a relay node to help transmit source data so that the average outage probability of the system is reduced. These protocols include: Optimal-Position relay assignment, Nearest-Optimal-Position relay assignment, and Left (Right)-Nearest-Optimal-Position relay assignment,...
Two-way amplify-and-forward relaying is considered in this paper. We propose adaptive power allocation (PA) algorithms to maximize the instantaneous achievable rate and minimize the system outage probability, respectively. Both single- and multi-relay systems are considered. It is shown that the proposed adaptive PA algorithms significantly outperform the uniform PA algorithms. Furthermore, exploiting...
In this paper, we consider the uplink of a Direct Sequence Code Division Multiple Access (DS-CDMA) system, where the source users cooperate in relaying each other's message to the destination node based on the decode-and-forward relaying protocol. We study the following partner selection strategies: 1. each user helps all other users (All-Cooperate); 2. each user helps all successfully decoded users...
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