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Optimal User Clustering and Power Allocation in NOMA Systems NOMA系统中最优用户聚类与功率分配
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9943029
Tanaka Tai, Nguyen Thi Xuan Uyen, D. L. Khoa
{"title":"Optimal User Clustering and Power Allocation in NOMA Systems","authors":"Tanaka Tai, Nguyen Thi Xuan Uyen, D. L. Khoa","doi":"10.1109/ATC55345.2022.9943029","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943029","url":null,"abstract":"Non-orthogonal multiple access (NOMA) is one of the proposed techniques which improve transfer speeds. There are two primary types of NOMA: code domain and power domain. This study focuses on the power domain. The benefit of power-domain NOMA depends on how the users are clustered and the power levels of users in the same cluster. This study aims to propose the model using the two-user pairing method and three users together, combining the threshold signal-to-noise ratio (SNR) levels to decide on two or three pairings to ensure the quality of service (QoS) for users. Besides, this model consider the optimal power allocation (PA) for each user in the cluster to the maximum sum rate with QoS constraints. Simulation results show the benefits of optimizing user clustering and power allocation with QoS constraints.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129424269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
High Gain Microstrip Patch Antenna Array using Air-Filled Substrate Integrated Waveguide (AFSIW) Feeding Structure 采用充气衬底集成波导馈电结构的高增益微带贴片天线阵列
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9943028
Nhu-Huan Nguyen, A. Ghiotto, M. Le, T. Vuong
{"title":"High Gain Microstrip Patch Antenna Array using Air-Filled Substrate Integrated Waveguide (AFSIW) Feeding Structure","authors":"Nhu-Huan Nguyen, A. Ghiotto, M. Le, T. Vuong","doi":"10.1109/ATC55345.2022.9943028","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943028","url":null,"abstract":"This paper presents a microstrip patch antenna array fed by a multilayer air-filled substrate integrated waveguide (AFSIW) structure. Thanks to the low loss feeding network, the antenna array presents high efficiency in millimeter wave frequencies. For demonstration, a 1×2 antenna array operating at 28 GHz is designed for 5G applications, which shows a realized gain of 10.8 dBi and a total efficiency higher than 90%. The proposed structure can be expanded to M×(2N) antenna array.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132828602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Pilot Enrichment Methods for Improving Quality of Received Signal in Underwater Acoustic OFDM Systems 提高水声OFDM系统接收信号质量的导频富集方法
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9943030
Thi Nga Nguyen, H. Phan, V. Cao, Thi Huyen Nguyen, Pham Thanh Hiep
{"title":"Pilot Enrichment Methods for Improving Quality of Received Signal in Underwater Acoustic OFDM Systems","authors":"Thi Nga Nguyen, H. Phan, V. Cao, Thi Huyen Nguyen, Pham Thanh Hiep","doi":"10.1109/ATC55345.2022.9943030","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943030","url":null,"abstract":"In OFDM systems, pilots are usually sent along with the data carriers to calculate channel impulse response (CIR) for channel estimation. However, transmitted signals are normally distorted by many environmental factors when propagating through underwater communication channels. Thus, the original pilots seem to be not enough to recover “good” CIR for channel estimation in underwater acoustic OFDM (UWA-OFDM) systems. Recent studies have developed data pilot-aided (DPA) strategies, known as STA and CDP, for time-variant channels like vehicle-to-vehicle (V2V) communications. These methods work on the assumption of high cross-correlation of CR between two adjacent data symbols and the support of two long training symbols in the IEEE 802.11p packet. These conditions are not provided in the UWA-OFDM systems, which leads to be infeasible to apply existing DPA strategies. Therefore, this paper introduces a novel pilot enrichment (PE) method for improving the performance of the channel estimation in UWA-OFDM systems. The core idea is that some data subcarriers are extracted under a condition related to constellation mapping for creating supplementary “pilots”. The “pilots” are used together with the original pilots for channel estimation. Our method is evaluated in comparison to the MMSE estimation on various modulation schemes. The experimental results illustrate that the PE estimator can perform better than the MMSE estimator in terms of bit error rate (BER), especially on medium and high SNR values.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130148121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Simplified Judgment to Enhance Decoding Performance of 5G NR Physical Uplink Control Channel Format 2 with Reed-Muller Code 利用Reed-Muller码提高5G NR物理上行控制信道格式2译码性能的简化判断
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9942971
D. Phan, Luong Xuan Hao, Nguyen Trung Tien, Duong Van Hoan
{"title":"A Simplified Judgment to Enhance Decoding Performance of 5G NR Physical Uplink Control Channel Format 2 with Reed-Muller Code","authors":"D. Phan, Luong Xuan Hao, Nguyen Trung Tien, Duong Van Hoan","doi":"10.1109/ATC55345.2022.9942971","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9942971","url":null,"abstract":"This paper proposes a simplified judgment to improve decoding performance of physical uplink control channel (PUCCH) format 2 using Reed-Muller code in fifth-generation new radio (5G NR). In this paper, descrambled sequence is divided into two halves and they are sequentially decoded. To obtain information bits and transmission state, this paper only compares decoding results of two halves with the full sequence instead of considering the additional result between two halves. In other words, discontinuous transmission (DTX) judgment becomes less strictly in order to reduce acknowledge missed detection probability (PACK). As a result, decoding process is not only simpler but it also offers significant improvement in terms of PACK. On the other hand, DTX to ACK probability (PDTX) is steadily managed within the allowable threshold although it is slightly increased due to the trade-off relationship with PACK. Feasibility of the proposed method is experimentally validated with different receiving antenna numbers under practical condition. The acquired results shows that the proposed approach is suitable for practical applications since it fully complies with all technical requirements by the 3rd generation partnership project (3GPP).","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125891253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fast Optimal Resource Allocation for Resilient Service Coordination in an NFV- Enabled Internet-of- Things System 基于NFV的物联网系统弹性业务协调快速优化资源分配
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9943001
Tuan-Minh Pham, T. Nguyen, Xuan-Tuan-Trung Nguyen, Hoai-Nam Chu, Ngô Hồng Sơn
{"title":"Fast Optimal Resource Allocation for Resilient Service Coordination in an NFV- Enabled Internet-of- Things System","authors":"Tuan-Minh Pham, T. Nguyen, Xuan-Tuan-Trung Nguyen, Hoai-Nam Chu, Ngô Hồng Sơn","doi":"10.1109/ATC55345.2022.9943001","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943001","url":null,"abstract":"Network Functions Virtualization (NFV) is a new way of leveraging an Internet-of-Things (IoT) system to provide real-time and highly flexible service creation. In an NFV-enabled Internet-of-Things (NIoT) system, several IoT functions implemented as Virtual Network Functions can be linked as a service function chain to build a customized IoT service quickly. It is important for an IoT service to be able to recover from a failure. However, the supply of a resilient IoT service in an NIoT system is challenging due to the coordination of distributed VNF instances. In this paper, we formulate the problem of resilient service coordination in an NIoT system as a mixed integer linear programming model, namely RSOd. The model offers the optimal resource allocation for minimizing service disruption when a failure happens at a node of an NIoT system. We also develop two modified versions of RSOd for different use cases required by an IoT provider. The evaluation results show that RSOd and its modified versions produce the optimal resource allocation in significantly reduced time compared to previous work. The results suggest that an IoT provider should carefully select an appropriate resource allocation strategy as it has to pay a resource cost to minimize the service disruption.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125026869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Study on Adversarial Attacks and Defense Method on Binarized Neural Network 二值化神经网络对抗性攻击与防御方法研究
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9943040
Van-Ngoc Dinh, Ngoc H. Bui, Van-Tinh Nguyen, Khoa-Sang Nguyen, Quang-Manh Duong, Quang-Kien Trinh
{"title":"A Study on Adversarial Attacks and Defense Method on Binarized Neural Network","authors":"Van-Ngoc Dinh, Ngoc H. Bui, Van-Tinh Nguyen, Khoa-Sang Nguyen, Quang-Manh Duong, Quang-Kien Trinh","doi":"10.1109/ATC55345.2022.9943040","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943040","url":null,"abstract":"Binarized Neural Networks (BNNs) are relatively hardware-efficient neural network models which are seriously considered for edge-AI applications. However, BNNs are like other neural networks and exhibit certain linear properties and are vulnerable to adversarial attacks. This work evaluates the robustness of BNNs under Projected Gradient Descent (PGD) - one of the most powerful iterative adversarial attacks, on BNN models and analyzes the effectiveness of corresponding defense methods. Our extensive simulation shows that the network almost malfunction when performing recognition tasks when tested with PGD samples without adversarial training. On the other hand, adversarial training could significantly improve robustness for both BNNs and Deep learning neural networks (DNNs), though strong PGD attacks could still be challenging. Therefore, adversarial attacks are a real threat, and more effective adversarial defense methods and innovative network architectures may be required for practical applications.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125158250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Artificial Noise-aided Adaptive Secure Transmissions 人工噪声辅助自适应安全传输
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9942978
Nhat Nam Phan, S. Q. Nguyen, L. Nguyen
{"title":"Artificial Noise-aided Adaptive Secure Transmissions","authors":"Nhat Nam Phan, S. Q. Nguyen, L. Nguyen","doi":"10.1109/ATC55345.2022.9942978","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9942978","url":null,"abstract":"The aim of this paper is to investigate a security solution in the physical layer of a wireless channel. By considering secrecy outage probability, a method of maximizing the average secrecy throughput through adaptive power and transmissions rate with Artificial Noise (AN) will be presented. This system performance secrecy throughput is evaluated by the different impacts of system parameters. The results show that transmissions with AN and with adaptive optimal power control will significantly increase the secrecy throughput.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127284520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Low-Power CT Second-Order VCO-Based ΔΣADC for Audio Recording on Skywater 130-nm 基于低功率CT二阶vco的ΔΣADC在Skywater 130-nm上录音
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9943011
Duc-Manh Tran, Duy-Hieu Bui, Xuan-Tu Tran
{"title":"A Low-Power CT Second-Order VCO-Based ΔΣADC for Audio Recording on Skywater 130-nm","authors":"Duc-Manh Tran, Duy-Hieu Bui, Xuan-Tu Tran","doi":"10.1109/ATC55345.2022.9943011","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943011","url":null,"abstract":"This paper presents a low-power, highly-digital Analog-to-Digital Converter (ADC) that aims to meet the requirements of audio recording and processing for Internet-of-Thing (IoT) System-on-Chips (SoCs). In this work, we propose an architecture applying the time-encoding technique and second-order noise shaping ΔΣ modulation. Our design is composed of highly-digital circuits optimized to reach high Signal-to-Noise and Distortion Ratio (SNDR) with low power consumption. The proposed architecture is verified by SPICE simulation. Our ADC obtains an SNDR of 80.7 dB-A, equivalent to 12.3 Effective Number Of Bits (ENOB) at the bandwidth of 24 kHz. This ADC consumes an average of 0.16 mW at the supply voltage of 1.8 V on Skywater 130-nm technology.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129089635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Novel Method for Network Quality based Navigation for Seamless Mobile Services 基于网络质量的无缝移动业务导航新方法
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9942976
Yehan Ukwaththage, Mohamed Yaseer, C. de Alwis, Madhusanka Liyanage
{"title":"A Novel Method for Network Quality based Navigation for Seamless Mobile Services","authors":"Yehan Ukwaththage, Mohamed Yaseer, C. de Alwis, Madhusanka Liyanage","doi":"10.1109/ATC55345.2022.9942976","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9942976","url":null,"abstract":"This paper proposes a network quality-based navigation routing algorithm to facilitate users to enjoy seamless access to mobile services in 5G and beyond networks. The proposed algorithm is capable of finding K multiple optimum paths satisfying multiple Quality of Service (QoS) metrics required for a particular mobile application. Relevant QoS parameter values obtained from the data network are projected to road network links. A modified A * based algorithm is developed to find the navigation route that has the minimum travel distance which satisfies the QoS constraints required by the user. Simulation results show that the proposed solution is capable of successfully routing a user while satisfying the QoS requirements. A mobile application-based implementation also validates the proposed algorithm as a viable solution for QoS-based navigation routing.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130506337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual-polarized High Gain Patch Antenna for 5G MIMO Application 5G MIMO应用的双极化高增益贴片天线
2022 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2022-10-20 DOI: 10.1109/ATC55345.2022.9942996
Thi Anh Vu, Toan Do, Duc Nhat Nguyen, Nhuong Quang Tran, Q. Nguyen, Vu Xuan Trung Nguyen, H. D. H. Truyen, M. Le
{"title":"Dual-polarized High Gain Patch Antenna for 5G MIMO Application","authors":"Thi Anh Vu, Toan Do, Duc Nhat Nguyen, Nhuong Quang Tran, Q. Nguyen, Vu Xuan Trung Nguyen, H. D. H. Truyen, M. Le","doi":"10.1109/ATC55345.2022.9942996","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9942996","url":null,"abstract":"In this work, a dual-band, dual-polarized mechanical antenna for 5G MIMO application is proposed. By characterizing the surface currents according to specific resonant modes, the patch antenna structure has been reduced in size while the electrical length remains the same. The proposed antenna covers the n40 and the n41 bands ofthe sub-6 GHz 5G applications with a wide bandwidth of 24% $(vert mathrm{S}_{11}vert$ and $vert mathrm{S}_{22}vert leq-15text{dB})$ and a peak gain of 9.2 dBi. In addition, the proposed antenna also has high isolation, and Cross-polar discrimination (XPD) of 25 dB. Due to its mechanical properties, the antenna is a good candidate for mass production and industrial uses.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122970990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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