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Design and Analysis of Hierarchical physical layer network coding

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2017年第12期16卷 7966-7981页

作者： Zhang, Haoyuan Zheng, Lei Cai, Lin Univ Victoria Dept Elect & Comp Engn Victoria BC V8P 5C2 Canada

This paper proposes a new relaying technique, hierarchical physical layer network coding (H-PNC), aimed at increasing the spectrum and energy efficiency in multi-hop wireless networks by supporting two bi-directional traffic flows simultaneously. H-PNC is applicable to the scenario in which two source nodes exchange data with the help of a relay, and the relay also needs to exchange data with one source node in an asymmetric two-way relay channel network, where the channel conditions of two source-relay links are asymmetric. H-PNC arranges transmissions in two stages, the multiple access (MA) stage and the broadcast (BC) stage. In the MA stage, the source node with the better channel to the relay can superimpose the symbol targeting to the relay on the symbol targeting to the other source node. In the BC stage, the relay can superimpose the symbol targeting to the source node with the better channel on the broadcast symbol. Thus, one more bidirectional information exchange is achieved beyond traditional PNC. Designs and optimizations of three H-PNC schemes are presented, and the error performance of QPSK-BPSK H-PNC is derived. Extensive simulations have been conducted to evaluate the system performance. Both theoretical analysis and simulation results demonstrated that H-PNC achieves a substantial performance gain.

关键词： physical layer network coding hierarchical modulation two way relay channel

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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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Performance Evaluation of IDMA Implementation with physical layer network coding 9

Performance Evaluation of IDMA Implementation with Physical ...

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9th International Symposium on Communication Systems, networks & Digital Signal Processing (CSNDSP)

作者： Abu-Almaalie, Z. Ghassemlooy, Z. Le-Minh, H. Aslam, N. Northumbria Univ Fac Engn & Environm Opt Commun Res Grp Newcastle Upon Tyne NE1 8ST Tyne & Wear England Northumbria Univ Fac Engn & Environm Computat Intelligence Res Grp Newcastle Upon Tyne NE1 8ST Tyne & Wear England

ISBN: (纸本)9781479925810

physical layer network coding (PNC) technique has been adopted in recent works for increasing the system throughput in a two way relay channel (TWRC) where two users exchange their information via an intermediate node. In this paper, we investigate the effectiveness of increasing numbers of users for PNC technique where multiple pairs of users swap their information simultaneously through a single relay node for TWRC. This scheme uses interleave division multiple access (IDMA) for multiuser detection at the receiver. Moreover, a common chip level interleaver is shared for each pair of users instead of using a distinct chip level interleaver as in traditional IDMA. In addition, channel coding is integrated with the newly proposed scheme to achieve more reliable communications. The performance of the proposed system is investigated for the TWRC in terms of the bit error rate (BER).

关键词： physical layer network coding Interleave division multiple access Convolutional code network coding Repetition code

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Femtocell as a Relay with Application of physical layer network coding

Femtocell as a Relay with Application of Physical Layer Netw...

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IEEE 11th Consumer Communications and networking Conference (CCNC)

作者： Oduola, Wasiu Opeyemi Qian, Lijun Li, Xiangfang Prairie View A&M Univ Dept Elect & Comp Engn Prairie View TX 77446 USA

ISBN: (纸本)9781479923557

This study takes advantage of the ability of physical-layer network coding (PNC) to embrace electromagnetic interference, improve spectral efficiency and achieve throughput optimality in a femtocell operated as a relay. Specifically, we make a case for a femtocell operating as a relay and utilizing PNC to eliminate the interference that exists between macrocells user equipments (MUEs) and femtocells home users equipments (HUEs) in an Opened Subscriber Group (OSG) co-channel deployment. With PNC implemented at the HNB relay, it becomes possible for the relay to take advantage of the information signals transmitted from both the HUE and MUE rather than treating the MUE's signals as interference. To guarantee the Service Quality (QoS) of femtocell users, we develop the closed-form expressions of the cummulative distributions function (CDF) of the received signal-to-noise ratios (SNR) and the outage probability of the HUE analytically. Simulation results match the analytical results and it is demonstrated that PNC is suitable for a relay operated femtocell network.

关键词： Femtocell physical layer network coding Outage Probability Cellular Systems Uplink

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A new physical layer network coding De-noising Mapping based on M-QAM 1

A new Physical Layer Network Coding De-noising Mapping based...

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1st International Conference on Electronics Instrumentation & Information Systems (EIIS)

作者： Lu, Mingyue Shen, Zhongliang Guo, Daoxing Wang, Xi PLA Univ Sci & Technol Coll Commun Engn Nanjing Jiangsu Peoples R China NANJING PANDA HANDA TECHNOL CO LTD Dept Technol Res & Dev Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781538608432

To overcome the problem of constellation points ambiguity in physical layer network coding (PLNC), this paper proposes a new QAM-based PLNC de-noising mapping scheme. In this scheme, the relay node rearranges the M-QAM constellation mapping, and merges the points of constellation according to a certain rule. Comparing with traditional scheme, this design reduces the number of constellation points nearly a half, which increases the Euclidean distance between adjacent points in the constellation, thus improves the BER performance. In addition, the relay node only needs demodulation - remapping - modulation, which significantly reduces the processing complexity. Simulation results show the effectiveness of our scheme.

关键词： Quadrature amplitude modulation physical layer network coding bit error rate complexity

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Performance of physical layer network coding in a Frequency-selective Fading Channel

Performance of Physical Layer Network Coding in a Frequency-...

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20th IEEE Symposium on Personal, Indoor and Mobile Radio Communications

作者： Gacanin, Haris Adachi, Fumiyuki Tohoku Univ Grad Sch Engn Dept Elect & Commun Engn Sendai Miyagi 980 Japan

ISBN: (纸本)9781424451234

Wireless communications are characterized by a multipath propagation that is suitable for application of network coding (NC) to improve the network performance. In particular, a physical layer network coding (PNC) is a promising technique to further improve network capacity for bi-directional information exchange between pairs of end users assisted by a relay terminal. In this paper, we present the performance of bi-directional transmission with PNC in a multipath channel. We introduce the use of frequency domain equalization (FDE) with orthogonal frequency division multiplexing (OFDM) and single carrier (SC) transmission to cope with the channel distortion. The equalization weights based on minimum mean square error (MMSE) criteria required for SC-FDE signaling are derived.

关键词： physical layer network coding frequency-selective fading OFDM SC-FDE

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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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The physical layer network coding System with Adaptive Pre-equalization and Decode-Forward Transform 5

The Physical Layer Network Coding System with Adaptive Pre-e...

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5th IEEE International Conference on Cloud Computing and Intelligence Systems (CCIS)

作者： Kong, Yuanyuan Lyu, Bin Chen, Feng Tian, Feng Yang, Zhen Nanjing Univ Posts & Telecommun Nanjing 210003 Jiangsu Peoples R China China Telecom Corp Ltd Internet Things Branch Nanjing 210029 Jiangsu Peoples R China

ISBN: (纸本)9781538660058

In this paper, we build a physical layer network coding (PLNC) system with adaptive pre-equalization and decode-forward transform. First, adaptive equalizers are designed at the transmitters (Alice and Bob) to compensate the distortion of channels, where pre-equalization and post-equalization share the same equalizer coefficients. The coefficients are adjusted adaptively with channels by zero forcing (ZF) criterions. The decode-forward (DF) mode is adopted at Relay to improve the system performance furtherly. Simulation results show that the superiority of the joint employment of adaptive pre-equalization and the DF mode.

关键词： physical layer network coding Two way relay networks Adaptive pre-equalization Decode-forward Transform Amplify-forward Transform

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Design and Analysis of Hierarchical physical layer network coding

Design and Analysis of Hierarchical Physical Layer Network C...

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IEEE International Conference on Communications (ICC)

作者： Zhang, Haoyuan Zheng, Lei Cai, Lin Univ Victoria Dept Elect & Comp Engn Victoria BC V8P 5C2 Canada

关键词： physical layer network coding hierarchical modulation two way relay channel

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Bound Analysis of physical layer network coding in Interference-Limited Two-way Relaying System

Bound Analysis of Physical Layer Network Coding in Interfere...

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IEEE 75th Vehicular Technology Conference (VTC Spring)

作者： Yang, Fei Huang, Meiyu Zhang, Sihai Zhou, Wuyang Univ Sci & Technol China Wireless Informat Network Lab Hefei 230026 Anhui Peoples R China

ISBN: (纸本)9781467309905;9781467309882

In this paper, performance of three-time slot (3TS) physical layer network coding (PNC) is investigated in interference-limited two-way relaying system. Effective lower and upper bounds are derived for important performance metrics like outage probability and average bit error rate (BER) with different modulation modes. Asymptotic behavior is also proposed to intuitively exhibit the trend of performance in high signal-to-interference and noise ratio (SINR) regime. We differentiate practical applications with different relay power for the bounds. A particular scenario with positional grid structure of sources, relay and co-channel interferers is established for numerical analysis, and the effects of some critical parameters, such as relay's location, forwarding capability and power allocation factor, are compared and discussed. The theoretic solutions are finally verified by simulation results.

关键词： Two-way relaying physical layer network coding co-channel interference outage probability average BER

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