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The advent of non-volatile memory (NVM) technologies has added an interesting nuance to the node level memory hierarchy. With modern 100 Gb/s networks, the NVM tier of storage can often be slower than the high performance network in the system; thus, a new challenge arises in the datacenter. Whereas prior efforts have studied the impacts of multiple sources targeting one node (i.e., incast) and have...
This paper proposed a radiated two-stage based method for the Multiple Input Multiple Output (MIMO) system evaluations. By using the proposed method, not only the final throughput values, but also the antenna patterns, the antennas' envelope correlation coefficient, the antennas' imbalance and the radiated sensitivity of the MIMO device can be obtained over the air. Moreover, through these parameters,...
In this paper, we investigate the physical layer (PHY) performance of generalized frequency division multiplexing (GFDM) for high throughput wireless communication. For comparison purposes, orthogonal frequency division multiplexing (OFDM)-based IEEE 802.11ac PHY is used as a benchmark. Harnessing the flexibility of GFDM, we propose a novel configuration, being compliant to the IEEE 802.11ac PHY for...
Modern internet traffic is heavily composed of some form of video communication. In addition, video streaming is slowly replacing regular phone connections. Given that most video transport utilizes Video over Hypertext Transfer Protocol/Transmission Control Protocol (HTTP/TCP), it is important to understand TCP performance in transporting video streams. Recently, multipath transport protocols have...
We study the performance of a multibeam satellite system under different frequency reuse schemes. We provide an information theoretical framework to analyze the achievable rates in two beams sharing the same frequency, based on single-user and multiuser detection. We compare two alternative strategies to serve two users in two beams, showing that interesting gains are possible by using multiuser detection...
This work aims at understanding and evaluating the impact of using different path loss models in the optimization trade-off of small cell (SC) networks. In LTE-A, the more realistic propagation models are the more efficient the radio and network optimization becomes. In this work we compare four urban path loss models: the urban/vehicular and pedestrian test environment from the ITU-R M. 1255 Report...
In this paper, we study the link scheduling problem considering the fluctuating fading effect in transmissions. We extend the previous deterministic physical interference model to the Rayleigh-fading model that uses the stochastic propagation to address fading effects. Based on this model, we formulate a problem called Fading-Resistant Link Scheduling (Fading-R-LS) problem, which aims to maximize...
Nanotechnology becomes reality paving the way for many new applications. In nanonetwork system, each nanosized device is equipped with limited capabilities and is dedicated to a basic task but the combination of the numerous devices actions results in high-level functions. In this context, large number of devices concentrated in a limited area must exchange data using wireless links. Spread in Time...
Medical Body Area Network (MBAN), recently released by the Federal Communications Commission (FCC), is a narrowband body area network (NB-BAN) specialized for medical applications. Its allocated band of frequency is from 2360–2400 MHz. This paper studies the effect of transmitter and receiver node positions on the bit-error-rate (BER) performance and maximum allowable data throughput of the on-body...
The individual applications of network coded opportunistic routing and successive interference cancellation have been proven with significant improvement on throughput performance of wireless multi-hop networks, but there lacks practical optimization on their combination application. Based on a TDMA system, this paper models the throughput maximization as network utility function maximization problem...
The individual applications of network coded opportunistic routing and successive interference cancellation have been proven with significant improvement on throughput performance of wireless multi-hop networks, but there lacks practical optimization on their combination application. Based on a TDMA system, this paper models the throughput maximization as network utility function maximization problem...
Data-buffering techniques currently used in time-division-multiple-access (TDMA) networks are described, including a short-delay technique called sub-framing. The sub-framing technique produces minimum user-to-user streamed-data throughput delays but results in data-transfer interruptions when TDMA time-slot resources have reassigned positions in the time frame. A simple modification to the sub-framing...
In this paper, a high throughput pipeline HARQ scheme of polar codes is proposed as the throughput of conventional schemes are to be promoted. In this scheme, we use a pipeline structure that the current HARQ process may combine the source bits of the current process and the retransmission bits of the incorrectly decoded previous HARQ processes and the source bits of the current process may be retransmitted...
Self-driving vehicle technologies are progressing rapidly and are expected to play a significant role in the future of transportation. One of the main challenges for self-driving vehicles on public roads is the safe cooperation and collaboration among multiple vehicles using sensor-based perception and inter-vehicle communications. When self-driving vehicles try to occupy the same spatial area simultaneously,...
Non-orthogonal multiple access (NOMA) is a promising multiple access technique for 5G wireless technology. In this paper, we first discuss the fundamentals of uplink and downlink NOMA transmissions in a cellular system and outline their key distinctions in terms of implementation complexity, detection and decoding at the SIC receiver(s), and the intra-cell and inter-cell interferences. Later, for...
Licensed-Assisted Access Long-Term Evolution (LAA- LTE) framework can offload excessive data stream to the unlicensed spectrum. Devices from different operators will compete for the same band and have to endure a more complex and congested channel conditions. Therefore a rapid and efficient access mechanism should be introduced in the LAA framework. Based on the Type B LBT channel access scheme, this...
In this paper, we study a wireless-powered two-way relay system, in which both wireless-powered sources exchange information through a multi-antenna relay. Both sources are assumed to have no embedded energy supply and thus first need to harvest energy from the radio frequency signals broadcasted by the relay before exchanging their information via the relay. We aim to maximize the sum throughput...
Today's data centers networks are commonly featured with the richness paths. This aim to improve the network performance with multipath connections and increases reliable system connection for the cables get cut, the failures of switches or routers. However, the common problem of multipath connection is suffered from the difference path conditions in term of speed and delay. In this paper based on...
Spectrum sensing using cooperative power spectral density cancellation (CPSC) over both fast and frequency-selective fading channels has not been investigated yet. We investigate the performance of the newly proposed CPSC method over this severely-impaired Rayleigh channel. We initially compare two approaches to calculate the decision variable in the CPSC algorithm. Then, it is assumed that the fading...
Interleave division multiple access (IDMA) is a potential candidate for the future fifth generation (5G) systems. In this paper, we propose a novel architecture for IDMA system with low latency while maintaining low complexity. In the conventional architecture, the IDMA receiver sequentially processes deinterleaving, despreading, spreading and interleaving for multiuser detection. The proposed architecture,...
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