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We study the Relay-based Cooperative Data Exchange (RCDE) problem, where initially each client has access to a subset of a set of original packets, referred to as their side information, and wants to retrieve all other original packets via cooperation. Unlike traditional Cooperative Data Exchange (CDE), in our proposed relay-based model, clients can only cooperate via a relay. The data exchange...
In this paper, a novel distributed concatenated Alamouti code is devised for a one-way relaying network consisting of two end nodes with each having a single antenna and one relay node equipped with two antennas. With the aid of the newly developed uniquely-factorable constellation pair (UFCP) generated from square quadrature amplitude modulation (QAM) constellation and by jointly processing the noisy...
The traditional method of customs examination can not satisfy the increasing demands of imports and exports of the vehicles. This paper designs a new automatic clearance control system based on Radio Frequency Identification (RFID) technology. The methods of how to improve security and secrecy of the system are discussed. Frequency disturb, the low power consumption and anti-jamming techniques are...
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