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Optimized Antenna Selection and Adaptive Power Allocation for physical layer network coding With Selective Soft-Message-Forward Cooperation

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IEEE ACCESS 2020年 8卷 92342-92351页

作者： Bao, Jianrong Lin, Yunxuan Liu, Chao Jiang, Bin Zhu, Fang He, Jianhai Hangzhou Dianzi Univ Sch Commun Engn Hangzhou 310018 Peoples R China China Jiliang Univ Coll Informat Engn Key Lab Electromagnet Wave Informat Technol & Met Hangzhou 310018 Peoples R China Ningbo Polytech Sch Elect Informat Engn Ningbo 315800 Peoples R China

To improve the systematic bit error rate (BER) performance and power efficiency, an optimized antenna selection and adaptive power allocation scheme is proposed for physical layer network coding (PNC) with selective soft-message-forward (SSMF) cooperation. In this scheme, two adaptive power allocation (APA) schemes are proposed for the multiple access (MA) and broadcast (BC) stages, respectively. In the MA stage, the APA scheme aims to maximize the Euclidean distance of network coding symbols received by relay node. In the second BC stage, the relay node takes the maximization of the minimum mutual information of two source nodes as objective function. Then it uses the narrow range method (NRM) to select the optimal antenna set and equally allocates power to them. To further reduce the systematic complexity, an antenna set pre-selection is proposed. It minimizes the antenna number in the initial antenna set of the NRM based on the deletion standard which does not reduce the mutual information in the BC stage. Simulation results indicate that our APA schemes surpass the existing equal power allocation (EPA) scheme with a binary phase-shift keying modulation. Compared with current EPA scheme, the proposed APA schemes for the BC, MA and global stages obtain about 1 dB, 2 dB and 3.5 dB performance gains at BER of 10(& x2212;3) with two antennas in the relay node, respectively.

关键词： Relays Antennas Resource management Mutual information Systematics Complexity theory network coding physical layer network coding selective soft-message-forward antenna selection adaptive power allocation

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The Resilience of MIMO based physical layer network coding to Jamming Attack

The Resilience of MIMO based Physical Layer Network Coding t...

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IEEE International Conference on Communications (IEEE ICC) / Workshop on NOMA for 5G and Beyond

作者： Okyere, Bismark Musavian, Leila Mumtaz, Rao Gonzalez, Jonathan Univ Essex Sch Comp Sci & Elect Engn Colchester Essex England GS Lda Aveiro Portugal

ISBN: (数字)9781728174402

ISBN: (纸本)9781728174402

In this paper, we explore the resilience of physical layer network coding (PNC) to jamming attacks, focusing on the bit error rate (BER) performance metric. The broadcast nature of the wireless medium has undoubtedly propelled some significant innovations, allowing ubiquitous access to broadband services. In spite of this, it has also created an enormous challenge in mitigating unfriendly interference, where jamming is categorized. A MIMO-PNC based algorithm shows significant improvement in error performance in the lower signal-to-noise ratio (SNR), where the base station (BS) applies linear detection, based on a linear transformed channel matrix, to received symbols, in order to estimate the network coded symbols. We investigate this algorithm in a centralized system of multi-antenna BS with multi-antenna legitimate users, against a barraging attack from a jammer, where the jamming channel is not known to the BS, and the jammer can use any number of transmit antennas. Over Rayleigh fading channels, our simulation results reveal that MIMO-based PNC perform better in lower SNR to jamming attack, as opposed to the non-jammed MIMO system, at twice the spectral efficiency.

关键词： MIMO physical layer network coding Jamming BER SNR ZF MMSE

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A physical layer network coding Based Modify-and-Forward with Opportunistic Secure Cooperative Transmission Protocol

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MOBILE networkS & APPLICATIONS 2019年第2期24卷 464-479页

作者： Quoc-Tuan Vien Tuan Anh Le Nguyen, Huan X. Tho Le-Ngoc Middlesex Univ Fac Sci & Technol London England McGill Univ Dept Elect & Comp Engn Montreal PQ Canada

This paper investigates a new secure relaying scheme, namely physical layer network coding based modify-and-forward (PMF), in which a relay node linearly combines the decoded data sent by a source node with an encrypted key before conveying the mixed data to a destination node. We first derive the general expression for the generalized secrecy outage probability (GSOP) of the PMF scheme and then use it to analyse the GSOP performance of various relaying and direct transmission strategies. The GSOP performance comparison indicates that these transmission strategies offer different advantages depending on the channel conditions and target secrecy rates, and relaying is not always desirable in terms of secrecy. Subsequently, we develop an opportunistic secure transmission protocol for cooperative wireless relay networks and formulate an optimisation problem to determine secrecy rate thresholds (SRTs) to dynamically select the optimal transmission strategy for achieving the lowest GSOP. The conditions for the existence of the SRTs are derived for various channel scenarios.

关键词： Wireless relay networks physical layer network coding Decode-and-forward Modify-and-forward Cooperative jamming

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Polar-Coded physical layer network coding Over Two-Way Relay Channels

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IEEE COMMUNICATIONS LETTERS 2019年第8期23卷 1301-1305页

作者： Xie, Zhaopeng Chen, Pingping Mei, Zhen Long, Shi Cai, Kui Fang, Yi Fuzhou Univ Dept Elect Informat Fuzhou 350001 Fujian Peoples R China Singapore Univ Technol & Design Dept Sci Singapore 487372 Singapore Guangdong Univ Technol Sch Informat Engn Guangzhou 510006 Guangdong Peoples R China Southeast Univ Natl Mobile Commun Res Lab Nanjing 210096 Jiangsu Peoples R China

Both polar codes and physical network coding (PNC) are promising techniques to achieve low-latency and high-rate transmission in 5G communications. In this letter, we investigate a joint polar-coded PNC system over a wireless two-way relay channel (TWRC). By exploiting the nature of PNC, we then propose two successive cancellation list (SCL) decoding schemes for the polar-coded PNC system, XOR-based conventional SCL (XOR-SCL) and joint decoding of PNC and SCL decoding (JPSCL), where message update rules are derived for odd and even channels. Simulation results demonstrate that JPSCL outperforms XOR-SCL over both AWGN and Rayleigh fading channels. In particular, JPSCL achieves a small bit error rate gap, i.e., within 1 dB at rate of 2/5, from SCL in the polar-coded point-to-point system at BER of 10(-5).

关键词： Polar code physical layer network coding SCL decoding

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Using physical layer network coding to Improve NOMA System Throughput with Energy Harvesting Users

Using Physical Layer Network Coding to Improve NOMA System T...

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IEEE Global Communications Conference (IEEE GLOBECOM)

作者： Khosroazad, Somayeh Naderi, Sonia Abedi, Ali Univ Maine Elect & Comp Engn Dept Wireless Sensor Networks WiSeNet Lab Orono ME 04469 USA

ISBN: (纸本)9781728109626

The aim of this paper is to improve the performance of an energy harvesting (EH) system under millimeter wave (mm wave) massive MIMO (Multiple Input Multiple Output) structure, as beneficial incorporation in beyond 5G. We consider a power splitting structure for this EH system, which has the best trade-off between transferred energy and data rate. However, it is shown that in such systems the use of Successive Interference Cancellation (SIC) method alone, the minimum probability of error requirements for the systems with more users than Radio Frequency (RF) chains may not be attained. Therefore, new schemes with control strategies over intra-beam interference to achieve an acceptable symbol error rate (SER) for multiple users in the same beam is still a vacancy to be studied in particular for the dense 5G networks. The proposed EH system is using a new Superposition Code (SC) based on physical layer network coding (PLNC) concept to dramatically improve the throughput and harvested energy for a specific signal to noise ratio (SNR). As the second goal, two beamforming optimization approaches are also suggested. The simulations result indicates that the uniform beamforming performance is acceptable if avoiding the high complexity is desired.

关键词： massive MIMO non orthogonal multiple access physical layer network coding superposition coding throughput Energy Harvesting system

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Multi-User Massive MIMO And physical layer network coding

Multi-User Massive MIMO And Physical Layer Network Coding

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IEEE Global Communications Conference (IEEE GLOBECOM)

作者： Okyere, Bismark Musavian, Leila Mumtaz, Rao Univ Essex Dept Comp Sci & Elect Engn Colchester Essex England GS Lda Aveiro Portugal

ISBN: (纸本)9781728109602

In this paper, we investigate the feasibility of applying physical layer network coding (PNC) in Multi-user Massive MIMO systems. In addition, we investigate the performance benefits of the joint Massive MIMO and PNC scheme. PNC has the potential of increasing capacity of a wireless system as the number of timeslots required for end-to-end communication reduces. We adopted a scheme that transforms the channel between a massive-antenna relay and a multitude of multi-antenna user terminals, with a Sum-Difference (SD) matrix. Through Log-Likelihood Ratio (LLR), PNC is achieved by deriving the network coded symbols from the estimates of the SD symbols at the massive-antenna relay node. The equalization matrix for the estimation is based on the SD transformed channel coefficient matrix. The error performance of the proposed joint Massive MIMO and PNC is evaluated through extensive simulation results. It is shown that joint Massive MIMO and PNC performs significantly better than Massive MIMO without PNC for QPSK modulation.

关键词： Massive MIMO physical layer network coding Log-Likelihood Ratio Sum-Difference Matrix Log-Sum Exponent Approximation BER SNR ZF MMSE

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Wireless Bidirectional Relaying Using physical layer network coding With Heterogeneous PSK Modulation

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IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 2018年第3期67卷 2335-2344页

作者： Arunachala, Chinmayananda Buch, Saket D. Rajan, B. Sundar Indian Inst Sci Dept Elect Commun Engn Bengaluru 560012 India Indian Inst Sci Dept Elect Engn Bengaluru 560012 India ISRO Space Applicat Ctr Ahmadabad 380015 Gujarat India

In bidirectional relaying using physical layer network coding (PLNC), it is generally assumed that users employ same modulation schemes in the multiple access phase. It may not be desirable for the users to always use the same modulation schemes, particularly when user-relay channels are not equally strong. Such a scheme is called heterogeneous PLNC where users employ different modulation schemes. In this paper, we provide a general analytical framework to find the network coding maps to be used at the relay during the broadcast phase, when the users employ heterogeneous, but symmetric phase-shift keying modulations. The fade state plane is partitioned into regions, where given network coding maps are employed. This partition has been obtained analytically, which is computationally efficient when compared to the computationally intensive approach taken by Zhang et al. which uses brute force computer-based search. Performance results are provided in terms of relay error rate and bit error rate.

关键词： Latin rectangles physical layer network coding wireless two-way relaying

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Automatic Modulation Classification and SNR Estimation Based on CNN in physical-layer network coding 29

Automatic Modulation Classification and SNR Estimation Based...

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29th Wireless and Optical Communications Conference (WOCC)

作者： Wang, Xuesong He, Yuna Sun, Yang Zhan, Yueying Chinese Acad Sci Technol & Engn Ctr Space Utilizat Key Lab Space Utilizat Beijing Peoples R China

ISBN: (纸本)9781728161242

In this paper, we first propose the Automatic Modulation Classification (AMC) problem based on the physical layer network coding (PNC) system and elaborate in detail. We use Convolutional Neural networks (CNN) to identify nine cases including three modulation formats with three phase shifts respectively, and estimate the Signal-to-Noise Ratio (SNR) simultaneously. As the result, we correctly identify several modulation formats and typical phase offsets with a 100% recognition rate, and estimate the received signal-to-noise ratio effectively with recognition rate above 98%.

关键词： automatic modulation classification physical layer network coding convolutional neural network constellation map

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Achieving maximum bit rate in a cognitive radio network with physical layer network coding

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INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS 2018年第10期31卷 e3558-e3558页

作者： Khosroazad, Somayeh Abedi, Ali Neda, Naaser Univ Maine Elect & Comp Engn Dept Wireless Sensor Networks Lab WiSe Net Orono ME USA Univ Birjand Fac Elect & Comp Engn Birjand Iran

In this paper, the power allocation problem in a relay-assisted cognitive radio network (CRN) is considered where the secondary users exchange information in an interweave mode on the basis of physical layer network coding. In order to enhance the capacity of CRN, using multiple-input multiple-output and orthogonal frequency division multiplexing has become very popular in the literature. This paper goes one step further to improve the throughput of secondary users using physical layer network coding by drawing off the transmission time. The main goal is to maximize the capacity of CRN, while keeping the total interference imposed on the primary users under a certain threshold. An optimal solution to this power allocation problem with limited relay power constraint, due to the limited budget, is derived;however, because of the high complexity of this method, an efficient suboptimal solution is also proposed.

关键词： cognitive radio networks multiple-input multiple-output orthogonal frequency division multiplexing physical layer network coding power allocation

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Spatial modulation and physical layer network coding based bidirectional relay network with transmit antenna selection over Nakagami-m fading channels

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INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS 2018年第14期31卷 e3742-e3742页

作者： Rajesh, R. Velmurugan, P. G. S. Thiruvengadam, S. J. Mallick, P. S. Vellore Inst Technol SENSE Vellore Tamil Nadu India Thiagarajar Coll Engn ECE Dept Madurai Tamil Nadu India Vellore Inst Technol SELECT Vellore Tamil Nadu India

In this paper, a high data rate bidirectional relay network is proposed by combining the merits of spatial modulation (SM) and physical layer network coding. All nodes in the network are equipped with multiple antennas. Spatial modulation technique is used to reduce hardware complexity and interchannel interference by activating only one antenna at any time during transmission. In the proposed bidirectional relay network, transmit antennas are selected at the source nodes and relay node on the basis of the order statistics of channel power. It increases received signal power and provides a significant improvement in the outage performance. Also, the data rate of the proposed network is improved by physical layer network coding at the relay node. A closed form analytical expression for the outage probability of the network over Nakagami-m fading channel is derived and validated by Monte Carlo simulations. In addition, asymptotic analysis is investigated at high signal-to-noise ratio *** outage performance of the proposed network is compared with SM and physical layer network coding bidirectional relay network without transmit antenna selection and point-to-point SM. With approximate SNR approximate to 1dB difference between the two networks, the same data rate is achieved.

关键词： decode and forward Nakagami-m fading channel physical layer network coding spatial modulation transmit antenna selection

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