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This paper presents a bit-level parallel communication interface used for inter processor communication separated on different printed circuit boards. A high performance board-to-board communication interface is important in modern supercomputers and portable computers or gadgets with multiple screen displays. We propose a recalibrated transmitter and receiver soft IP cores to support asynchronous...
To increase the number of successful accesses for machine-to-machine (M2M) communication, we propose a new random access (RA) procedure. The proposed RA procedure allows evolved NodeB (eNB) to know the preamble collisions in the first step by attaching user equipment (UE) identity information in physical random access channel (PRACH). This improvement prevents eNB from scheduling physical uplink shared...
This paper presents a new method for constructing a conflict graph for D2D communications in cellular systems, which is useful for efficient radio resource allocation for D2D links. The construction is an iterative process which includes a broadcast-and-acknowledgment protocol. The convergence and delay performance of the proposed constructing process is theoretically analyzed. Simulation results...
In this paper, we consider a two-way relay network (TWRN) consisting of two sources and N amplify-and-forward (AF) relays (N ≥ 1), among which the best relay is chosen to assist the data communication. In a time-varying fading channel, the relay selection may be based on the outdated channel state information (CSI). We study the impact of outdated relay selection on the system performance by deriving...
In Delay Tolerant Networks (DTNs), how to transmit data efficiently is one of the most important issues. Recently, Random Linear Network Coding (RLNC) is proposed as a promising approach to improve data transmission efficiency in DTNs. To facilitate the development of deployment of RLNC based routing protocols, it is imperative to quantify the performance gain brought by RLNC in a rigorous and systematic...
Time-delay of message-transmission in the network is one of the main causes for bad control performance in multi-processor networked control system (NCS). Improved mixed traffic scheduler can shorten deadline of message-transmission and cut much time-delay by increasing number 1 of sampling. In the meantime, feedback scheduling control model for NCS can schedule instantly message-transmission and...
In this paper, we analyze a new type of delay tolerant networks (DTN) where each node owns multiple dedicated messengers, called pigeons. The only form of inter- node communication is for a pigeon to periodically carry a batch of messages originated at the home node, deliver to the corresponding destination nodes and return home. We name this as homing-pigeon (HoP) based routing mechanism, which is...
The distributed queue dual bus (DQDB) metropolitan area network (MAN) is currently being standardised by IEEE 802.6. The author reports on a characteristic of the DQDB MAC protocol, found using simulation, which causes the end stations to experience higher delays than the middle stations under certain conditions. One mechanism is described to explain the phenomenon along with a modification to improve...
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