Interference cancellation for non-orthogonal multiple access used in future wireless mobile networks

Su, Xin; Yu, Haifeng; Kim, Wansoo; Choi, Chang; Choi, Dongmin

doi:10.1186/s13638-016-0732-z

Cited by 57 publications

(33 citation statements)

References 17 publications

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“…A more straightforward extension to this work is the assessment of OFDM, given that this is a modulation designed to cope with wide-band frequency selective channels and used in the recent versions of the 802.11 family of standards, as well as in 4G celular systems. Another very recent technology that is presently at an early stage of research is power-domain non-orthogonal multiple access (NOMA) [42][43][44][45], and the exploration of NOMA with MIMO-IBFD is a major research problem that needs to be addressed. Moreover, as PLNC can be seen as akin to the NOMA concept, a fruitful interplay between these two techniques can be expected.…”

Section: Discussionmentioning

confidence: 99%

Efficient message exchange protocols exploiting state-of-the-art PHY layer

Lemos

Monteiro

Sousa

et al. 2017

J Wireless Com Network

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The paper focuses on the two-way relay channel (TWRC) and the multi-way wireless network with three terminals, where all three want to exchange or share data and have to do that with the help of a relay. This paper shows how it is possible to significantly decrease the number of time slots required to exchange messages between terminals in networks based on time-division multiple access (TDMA), by taking into consideration new techniques at the physical (PHY) layer. The paper considers a PHY layer where physical-layer network coding (PLNC), multiple-input multiple-output (MIMO), and in-band "full-duplex" (IBFD) with loopback interference cancellation are all integrated, so that it is possible to significantly increase the overall throughput of the network. This is entirely attained by transferring the burden from the time domain to the spatial domain, via spatial multiplexing and by simultaneously resorting to non-orthogonal multiple access, which is the consequence of using both PLCN and IBFD. For the TWRC, it is shown that, if a massive MIMO relay is used, a simple lattice-based PLNC can be directly applied and, with typical IBFD interference cancellation amounts, a TWRC can effectively use only one time slot instead of the four needed when adopting the traditional TDMA exchange. In the case of the Y-network (i.e., with three terminals), a technique is presented that allows all the information exchange between terminals to be cut from the six time slots required in TDMA to only one time slot, provided that the information packets are not too short. The error performance of these systems is measured by means of simulation using MIMO Rayleigh fading channels.

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Section: Discussionmentioning

confidence: 99%

Efficient message exchange protocols exploiting state-of-the-art PHY layer

Lemos

Monteiro

Sousa

et al. 2017

J Wireless Com Network

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“…Remark Due to a couple of reasons, in PD‐NOMA–based systems, the BER has increased concerning the OFDMA‐based systems . (1) Error propagation: in the detection process, if the signal of one user is not detected correctly, it affects the detection accuracy of the next iterations.…”

Section: System Models and Problem Formulationsmentioning

confidence: 99%

Optimal radio resource allocation to achieve a low BER in PD‐NOMA–based heterogeneous cellular networks

Moltafet

Azmi

Javan

et al. 2019

Trans Emerging Tel Tech

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In this paper, the problem of downlink radio resource allocation for a power‐domain nonorthogonal multiple‐access–based heterogeneous cellular network is investigated. We propose two scenarios: (1) resource allocation with exclusive subcarrier allocation and (2) resource allocation considering intercell interference. The aim of this paper is to obtain joint subcarrier and power allocation for the two considered system models by addressing the maximization of the users' sum rate subject to the bit error rate constraint, the successive interference cancellation constraint, subcarrier constraints, and the transmit power restriction of each base station. To solve the corresponding optimization problems, an alternating method is applied by decoupling the proposed problems into two subproblems, namely, subcarrier allocation problem and power allocation problem, where they are solved by using the mesh adaptive direct search algorithm and different successive convex approximation methods, respectively. Moreover, to evaluate the optimality gap of the alternating method, the proposed problems are solved using an optimal method, namely, monotonic optimization with high complexity as a benchmark. As the results show, with the bit error rate constraint, the link‐level performance, at the cost of a decreasing system sum rate, is improved.

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“…Data collected from users may include sensitive or private information of their daily activities; hence security protection and privacy preserving are vital for the development of IoT. According to the principle of information generation and the technical architecture, IoT consists of three layers, namely, perception [1,2], network protocol [3,4], and application layers [5,6]. The perception layer is composed of various sensors and gateways, such as temperature sensor, two-dimensional barcode, camera, and Global Positioning System (GPS).…”

Section: Introductionmentioning

confidence: 99%

A High-Security and Smart Interaction System Based on Hand Gesture Recognition for Internet of Things

Zhang

Zhou

2018

Security and Communication Networks

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In this work, we propose a vision-based hand gesture recognition system to provide a high-security and smart node in the application layer of Internet of Things. The system can be installed in any terminal device with a monocular camera and interact with users by recognizing pointing gestures in the captured images. The interaction information is determined by a straight line from the user’s eye to the tip of the index finger, which achieves real-time and authentic data communication. The system mainly contains two modules. The first module is an edge repair-based hand subpart segmentation algorithm which combines pictorial structures and edge information to extract hand regions from complex backgrounds. Second, the position which the user focuses on is located by an adaptive method of pointing gesture estimation, which adjusts the offsets between the target position and the calculated position due to lack of depth information.

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Interference cancellation for non-orthogonal multiple access used in future wireless mobile networks

Cited by 57 publications

References 17 publications

Efficient message exchange protocols exploiting state-of-the-art PHY layer

Efficient message exchange protocols exploiting state-of-the-art PHY layer

Optimal radio resource allocation to achieve a low BER in PD‐NOMA–based heterogeneous cellular networks

A High-Security and Smart Interaction System Based on Hand Gesture Recognition for Internet of Things

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