Pub Date : 2022-10-20DOI: 10.1109/ATC55345.2022.9942983
Emranul Haque, A. Noman, Md. Billal Hossain, N. H. Hai, Feroz Ahmed
It is critical to identify pathogens such as Vibrio Cholera, Escherichia Coli (E. coli), Bacillus Anthracis, and Enterococcus Faecalis, which cause infections in the blood, lungs, and other bodily parts. We present here a Surface Plasmon Resonance (SPR) biosensor-based Photonic Crystal Fiber (PCF) for the detection of pathogenic bacteria which pollute drinking water. The proposed sensor exhibits excellent performance characteristics, and it has the configuration of detecting analyte samples externally. The sensor is built with a basic square lattice of PCF, covered with a thin chemically stable gold layer. The sensor's performance is studied numerically using a finite element (FE)-based simulation tool, where the highest wavelength sensitivity is found to be 5161 nm/RIU for detecting Enterococcus Faecalis bacteria. Other critical parameters such as Signal to Noise Ratio, Detection Limit, and Sensor Length are also evaluated and presented for the proposed PCF biosensor
{"title":"Gold Coated Photonic Crystal Fiber-Based Biosensor for Pathogenic Bacteria Detection","authors":"Emranul Haque, A. Noman, Md. Billal Hossain, N. H. Hai, Feroz Ahmed","doi":"10.1109/ATC55345.2022.9942983","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9942983","url":null,"abstract":"It is critical to identify pathogens such as Vibrio Cholera, Escherichia Coli (E. coli), Bacillus Anthracis, and Enterococcus Faecalis, which cause infections in the blood, lungs, and other bodily parts. We present here a Surface Plasmon Resonance (SPR) biosensor-based Photonic Crystal Fiber (PCF) for the detection of pathogenic bacteria which pollute drinking water. The proposed sensor exhibits excellent performance characteristics, and it has the configuration of detecting analyte samples externally. The sensor is built with a basic square lattice of PCF, covered with a thin chemically stable gold layer. The sensor's performance is studied numerically using a finite element (FE)-based simulation tool, where the highest wavelength sensitivity is found to be 5161 nm/RIU for detecting Enterococcus Faecalis bacteria. Other critical parameters such as Signal to Noise Ratio, Detection Limit, and Sensor Length are also evaluated and presented for the proposed PCF biosensor","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":"128711023","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}
Data imbalance and complexity are the key challenges of applying federated learning (FL) techniques for wireless networks. In this paper, we propose a novel framework inspired by a divide-and-conquer algorithm. We aim to develop a full-stack federated distillation (FFD) method for federated learning over a massive Internet of Things network. We first divide the network into sub-regions that can be represented by a neural network model. After performing local training, these models are then aggregated into a global model by using a novel knowledge-distillation method. This FFD method allows each local model to be efficiently updated by learning the features of the other models. Furthermore, this method can be easily deployed in new and large-scaled environments without requiring the models to be re-trained from scratch. Finally, we conduct extensive simulations to evaluate the performance of the proposed FFD method. The results show that our solution outperforms many contemporary FL techniques with non-IID (i.e., not independent and identically distributed) and imbalanced data.
{"title":"FFD: A Full-Stack Federated Distillation method for Heterogeneous Massive IoT Networks","authors":"Minh-Duong Nguyen, Hong-Son Luong, Tung-Nguyen, Viet Quoc Pham, Q. Do, W. Hwang","doi":"10.1109/ATC55345.2022.9943034","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943034","url":null,"abstract":"Data imbalance and complexity are the key challenges of applying federated learning (FL) techniques for wireless networks. In this paper, we propose a novel framework inspired by a divide-and-conquer algorithm. We aim to develop a full-stack federated distillation (FFD) method for federated learning over a massive Internet of Things network. We first divide the network into sub-regions that can be represented by a neural network model. After performing local training, these models are then aggregated into a global model by using a novel knowledge-distillation method. This FFD method allows each local model to be efficiently updated by learning the features of the other models. Furthermore, this method can be easily deployed in new and large-scaled environments without requiring the models to be re-trained from scratch. Finally, we conduct extensive simulations to evaluate the performance of the proposed FFD method. The results show that our solution outperforms many contemporary FL techniques with non-IID (i.e., not independent and identically distributed) and imbalanced data.","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":"129100331","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}
Pub Date : 2022-10-20DOI: 10.1109/ATC55345.2022.9942999
Yidong Li, W. M. Tam, F. Lau
In this paper, we propose modified multi-bit noisy gradient descent bit flipping (M-NGDBF) algorithms for decoding low-density parity-check codes. To simplify the decoder design, we eliminate the use of Gaussian noise generators at the decoder and replace them with received signals after simple transformations. We then improve the convergence rate by removing the randomness in the M-NGDBF algorithm during the first few iterations. Subsequently, we construct a tabu-list to record bits that are flipped in the current iteration and allows these bits to be flipped in the next iteration only with a very small probability. Simulation results show that our proposed algorithms outperform the original M-NGDBF algorithm in terms of both bit error rate and convergence rate.
{"title":"Modified Noisy Gradient Descent Bit-Flipping Decoding Algorithms for LDPC Codes","authors":"Yidong Li, W. M. Tam, F. Lau","doi":"10.1109/ATC55345.2022.9942999","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9942999","url":null,"abstract":"In this paper, we propose modified multi-bit noisy gradient descent bit flipping (M-NGDBF) algorithms for decoding low-density parity-check codes. To simplify the decoder design, we eliminate the use of Gaussian noise generators at the decoder and replace them with received signals after simple transformations. We then improve the convergence rate by removing the randomness in the M-NGDBF algorithm during the first few iterations. Subsequently, we construct a tabu-list to record bits that are flipped in the current iteration and allows these bits to be flipped in the next iteration only with a very small probability. Simulation results show that our proposed algorithms outperform the original M-NGDBF algorithm in terms of both bit error rate and convergence rate.","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":"129232522","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}
Pub Date : 2022-10-20DOI: 10.1109/ATC55345.2022.9942965
Kha M. Hoang, Luyen Van Tong, Cuong Van Nguyen
This paper proposes a beamformer based on the null synthesis technique for uniform rectangular arrays of half-wavelength dipoles. This beamformer uses complex weight control to produce adaptive patterns with small distortions in sidelobes while preserving the main lobe and imposing nulls in the directions of interfering signals. The beamformer does not require any optimization algorithm to obtain nulled patterns; therefore, it is a potential solution to adaptive antenna systems with high performance. To demonstrate the pattern nulling ability, the proposed beamformer is evaluated through various scenarios and compared to a beamformer based on binary particle swarm optimization.
{"title":"A Null Synthesis Technique-Based Beamformer for Uniform Rectangular Arrays","authors":"Kha M. Hoang, Luyen Van Tong, Cuong Van Nguyen","doi":"10.1109/ATC55345.2022.9942965","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9942965","url":null,"abstract":"This paper proposes a beamformer based on the null synthesis technique for uniform rectangular arrays of half-wavelength dipoles. This beamformer uses complex weight control to produce adaptive patterns with small distortions in sidelobes while preserving the main lobe and imposing nulls in the directions of interfering signals. The beamformer does not require any optimization algorithm to obtain nulled patterns; therefore, it is a potential solution to adaptive antenna systems with high performance. To demonstrate the pattern nulling ability, the proposed beamformer is evaluated through various scenarios and compared to a beamformer based on binary particle swarm optimization.","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":"126073844","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}
Pub Date : 2022-10-20DOI: 10.1109/ATC55345.2022.9943010
Nguyen Huu Son, H. Yen, G. Sun, K. Ishibashi
Due to the new trend on non-contact monitoring of vital signs and cardiopulmonary activity, Doppler radar is getting more attention as a promising technology. This medical radar tracks small movements on the human's body-surface to measure several vital parameters such as heart rate and respiration rate. However, because radar signals are susceptible to body movement and breathing effects, using simple signal processing methods can be challenging to provide accurate results. In this study, we propose a time-domain signal processing algorithm that combines Digital filters and a zero-crossing algorithm to extract the heart rate accurately. This algorithm comprises two processes: Heart rate extraction by Half/Double beat-to-beat intervals (BBIs) Moving average filters and Heartbeat refinement by IIR filter, zero-crossing detection and Data recovery algorithm. To evaluate the algorithm's accuracy, we measured the cardiopulmonary information of 10 healthy subjects in the supine position, and these subjects also wore an electrocardiograph (ECG) contact sensor to provide reference data. The proposed method has considerable advantages due to the compact model and low computational cost while still providing a significant correlation compared with ECG when the coefficient R = 0.998.
{"title":"High-Accuracy Heart Rate Estimation By Half/Double BBI Moving Average and Data Recovery Algorithm of 24GHz CW-Doppler Radar","authors":"Nguyen Huu Son, H. Yen, G. Sun, K. Ishibashi","doi":"10.1109/ATC55345.2022.9943010","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943010","url":null,"abstract":"Due to the new trend on non-contact monitoring of vital signs and cardiopulmonary activity, Doppler radar is getting more attention as a promising technology. This medical radar tracks small movements on the human's body-surface to measure several vital parameters such as heart rate and respiration rate. However, because radar signals are susceptible to body movement and breathing effects, using simple signal processing methods can be challenging to provide accurate results. In this study, we propose a time-domain signal processing algorithm that combines Digital filters and a zero-crossing algorithm to extract the heart rate accurately. This algorithm comprises two processes: Heart rate extraction by Half/Double beat-to-beat intervals (BBIs) Moving average filters and Heartbeat refinement by IIR filter, zero-crossing detection and Data recovery algorithm. To evaluate the algorithm's accuracy, we measured the cardiopulmonary information of 10 healthy subjects in the supine position, and these subjects also wore an electrocardiograph (ECG) contact sensor to provide reference data. The proposed method has considerable advantages due to the compact model and low computational cost while still providing a significant correlation compared with ECG when the coefficient R = 0.998.","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":"114160346","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}
Pub Date : 2022-10-20DOI: 10.1109/ATC55345.2022.9943026
A. Pham, Duc-Tuong Hoang, Hieu T. Nguyen
Large-scale multiple-input multiple-output (MIMO) transmission has been widely proposed for the current and future communication systems since this transmission technique opens up new options to expand the system capacity and quality of services for the radio networks. One-bit analog-to-digital converters (ADCs) and mixed-resolution ADCs are emerging techniques to reduce the power consumption and hardware cost when an enormous number of receive antennas are employed in the system. In this paper, we present the performance of the deep-learning-based detection of the triple mixed-ADC system, where the receiver side splits the set of receive antennas into three subsets and utilizes the extremely low-resolution, low-resolution, and high-resolution ADCs in those three subsets. We present the triple mixed-ADC complex channel and show the derivation to convert such a complex channel model to the equivalent real binary channel model to leverage the previous Deep Learning framework for detecting the large-scale MIMO signal. The model for the triple mixed-ADC is trained and tested successfully, and the experiment results show the advantages of the proposed triple mixed-ADC system over the single ADC and dual mixed ADC systems.
{"title":"Performance of Triple Mixed-ADC Large-Scale MIMO Detector Using Deep Learning","authors":"A. Pham, Duc-Tuong Hoang, Hieu T. Nguyen","doi":"10.1109/ATC55345.2022.9943026","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943026","url":null,"abstract":"Large-scale multiple-input multiple-output (MIMO) transmission has been widely proposed for the current and future communication systems since this transmission technique opens up new options to expand the system capacity and quality of services for the radio networks. One-bit analog-to-digital converters (ADCs) and mixed-resolution ADCs are emerging techniques to reduce the power consumption and hardware cost when an enormous number of receive antennas are employed in the system. In this paper, we present the performance of the deep-learning-based detection of the triple mixed-ADC system, where the receiver side splits the set of receive antennas into three subsets and utilizes the extremely low-resolution, low-resolution, and high-resolution ADCs in those three subsets. We present the triple mixed-ADC complex channel and show the derivation to convert such a complex channel model to the equivalent real binary channel model to leverage the previous Deep Learning framework for detecting the large-scale MIMO signal. The model for the triple mixed-ADC is trained and tested successfully, and the experiment results show the advantages of the proposed triple mixed-ADC system over the single ADC and dual mixed ADC systems.","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":"123771856","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}
Pub Date : 2022-10-20DOI: 10.1109/ATC55345.2022.9942993
M. Nguyen, Van Lie Tran, F. Ferrero, L. Trinh
Long Range Wide Area Network (LoRaWAN) has been largely developed and applied for many Internet of Things (IoT) applications with wide coverage and low-power consumption. However, for environment with many obstacles and blind spots, the classical star network has limitation in area coverage. The present study was undertaken to evaluate the LoRaWAN extender using multiple relays in terms of coverage ability, performance, and power consumption. In this research, the design and implementation of a multiple relay system compatible with the LoRaWAN protocol is studied to extend the coverage of a classical LoRaWAN gateway. The relay can have multiple years of operation with a compact battery. These relays were deployed along a deep river will complex terrain that the gateway can not fully cover. The longest distance of each relay was recorded so that the packets sent by the previous relay were still received by the next relay, the packet loss ratio and latency were calculated to evaluate the performance, and power consumption was measured by using a power analyzer. The results show the effectiveness and feasibility of the proposed design for multiple relays to extend the LoRaWAN network.
{"title":"Low-power LoRaWAN Extender Using Multiple Relays: Design and Evaluation","authors":"M. Nguyen, Van Lie Tran, F. Ferrero, L. Trinh","doi":"10.1109/ATC55345.2022.9942993","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9942993","url":null,"abstract":"Long Range Wide Area Network (LoRaWAN) has been largely developed and applied for many Internet of Things (IoT) applications with wide coverage and low-power consumption. However, for environment with many obstacles and blind spots, the classical star network has limitation in area coverage. The present study was undertaken to evaluate the LoRaWAN extender using multiple relays in terms of coverage ability, performance, and power consumption. In this research, the design and implementation of a multiple relay system compatible with the LoRaWAN protocol is studied to extend the coverage of a classical LoRaWAN gateway. The relay can have multiple years of operation with a compact battery. These relays were deployed along a deep river will complex terrain that the gateway can not fully cover. The longest distance of each relay was recorded so that the packets sent by the previous relay were still received by the next relay, the packet loss ratio and latency were calculated to evaluate the performance, and power consumption was measured by using a power analyzer. The results show the effectiveness and feasibility of the proposed design for multiple relays to extend the LoRaWAN network.","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":"133718213","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}
Pub Date : 2022-10-20DOI: 10.1109/ATC55345.2022.9943020
Huy Ho-Sy-Nhat, Phuong-Linh Hoang, S. Ta, Khac Kiem Nguyen, Chien Dao-Ngoc
This paper proposes a printed ultra-wideband (UWB) tapered-slot antenna (TSA) using a novel feeding structure. It consists of two symmetrical radiating flares printed on the top-side of a dielectric substrate. The feeding structure employs novel microstrip-to-slot transformers with via, circular stubs, and circular slots to realize UWB out-of-phase power divider features, which serves as a differential-feed scheme for the two radiating flares. The final design of the proposed TSA with dimensions of 150 mm ×98 mm ($0.58lambda_{min} times 0.38lambda_{min}$, where $lambda_{min}$ is the wavelength at the lowest operational frequency) is fabricated and measured. Both simulation and measurement result in an impedance matching bandwidth of 160% (1.19 – 11 GHz). Moreover, across its impedance matching bandwidth, the antenna prototype achieves a good end-fire radiation with the peak gain of 10.2 dBi, highly symmetric pattern, small cross-polarization level, and high front-to-back ratio.
本文提出了一种采用新型馈电结构的印刷超宽带锥形缝隙天线。它由两个对称的辐射耀斑印刷在电介质衬底的顶部。馈电结构采用新颖的微带-槽变压器，带通孔、圆桩和圆槽，实现超宽带失相功率分配器功能，作为两个辐射耀斑的差动馈电方案。所提出的TSA的最终设计尺寸为150 mm ×98 mm ($0.58lambda_{min} 乘以0.38lambda_{min}$，其中$lambda_{min}$为最低工作频率的波长)。仿真和测量结果表明，阻抗匹配带宽为160% (1.19 - 11 GHz)。此外，在其阻抗匹配带宽范围内，天线原型实现了良好的端射辐射，峰值增益为10.2 dBi，方向图高度对称，交叉极化电平小，前后比高。
{"title":"Design of Ultra-Wideband Tapered Slot Antenna Using Novel Feeding Structure","authors":"Huy Ho-Sy-Nhat, Phuong-Linh Hoang, S. Ta, Khac Kiem Nguyen, Chien Dao-Ngoc","doi":"10.1109/ATC55345.2022.9943020","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943020","url":null,"abstract":"This paper proposes a printed ultra-wideband (UWB) tapered-slot antenna (TSA) using a novel feeding structure. It consists of two symmetrical radiating flares printed on the top-side of a dielectric substrate. The feeding structure employs novel microstrip-to-slot transformers with via, circular stubs, and circular slots to realize UWB out-of-phase power divider features, which serves as a differential-feed scheme for the two radiating flares. The final design of the proposed TSA with dimensions of 150 mm ×98 mm ($0.58lambda_{min} times 0.38lambda_{min}$, where $lambda_{min}$ is the wavelength at the lowest operational frequency) is fabricated and measured. Both simulation and measurement result in an impedance matching bandwidth of 160% (1.19 – 11 GHz). Moreover, across its impedance matching bandwidth, the antenna prototype achieves a good end-fire radiation with the peak gain of 10.2 dBi, highly symmetric pattern, small cross-polarization level, and high front-to-back ratio.","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":"115081784","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}
Pub Date : 2022-10-20DOI: 10.1109/ATC55345.2022.9943014
Hieu T. Nguyen, Duc A. Hoang, H. D. Ngoc, Thang Le Nhat
Large-scale multiple-input multiple-output (MIMO) transmission is a widely adopted technique for the current and future communication systems as it offers possibilities to increase the system capacity and quality of services for the radio networks. One-bit analog-to-digital converters (ADCs) and mixed-resolution ADCs have been proposed to reduce the power consumption and hardware cost when a large number of receive antennas are proposed to use in the system. In this paper, we introduce a triple mixed-ADC system, where the receiver side partitions the set of receive antennas into three subsets and utilizes the extremely low-resolution, low-resolution, and high-resolution ADCs to those three subsets. The core idea of this proposal is to use a large portion of receive antennas with 1-bit and 2-bit ADCs, which were proven to have the best energy efficiency, and only a small number of antennas are equipped with 5-bit ADCs, instead of conventional resolution of from 10 to 12 bits, to save power consumption of the ADCs. Additionally, the proposed triple mixed-ADC system offers more options to tune for performance improvement. The experiment results verify the advantages of the triple mixed-ADC system over the single low-resolution ADC and dual mixed-ADC systems in all considered test cases.
{"title":"On Design of Tanner-Graph Detector For Triple Mixed-ADC Large-Scale MIMO Systems","authors":"Hieu T. Nguyen, Duc A. Hoang, H. D. Ngoc, Thang Le Nhat","doi":"10.1109/ATC55345.2022.9943014","DOIUrl":"https://doi.org/10.1109/ATC55345.2022.9943014","url":null,"abstract":"Large-scale multiple-input multiple-output (MIMO) transmission is a widely adopted technique for the current and future communication systems as it offers possibilities to increase the system capacity and quality of services for the radio networks. One-bit analog-to-digital converters (ADCs) and mixed-resolution ADCs have been proposed to reduce the power consumption and hardware cost when a large number of receive antennas are proposed to use in the system. In this paper, we introduce a triple mixed-ADC system, where the receiver side partitions the set of receive antennas into three subsets and utilizes the extremely low-resolution, low-resolution, and high-resolution ADCs to those three subsets. The core idea of this proposal is to use a large portion of receive antennas with 1-bit and 2-bit ADCs, which were proven to have the best energy efficiency, and only a small number of antennas are equipped with 5-bit ADCs, instead of conventional resolution of from 10 to 12 bits, to save power consumption of the ADCs. Additionally, the proposed triple mixed-ADC system offers more options to tune for performance improvement. The experiment results verify the advantages of the triple mixed-ADC system over the single low-resolution ADC and dual mixed-ADC systems in all considered test cases.","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":"123217029","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}
Pub Date : 2022-10-20DOI: 10.1109/atc55345.2022.9943021
F. Lau
In most existing digital communication systems, the received signal strength is usually larger than the noise level. Alternatively, the bit-energy-to-noise-power-spectral-density (Eb/N0) is assumed to be greater than 0 dB. However, in some specific applications such as deepspace communications and quantum key distribution, the received signal power is smaller than the noise power. Under such circumstances, strong error correction codes are required to provide a reliable link between the transmitter and the receiver. In this talk, a new type of error-correction code called “protograph-based low-density parity-check Hadamard codes” is introduced. The codes are shown to provide excellent error performance not only when Eb/N0 is smaller than 0 dB, but also when Eb/N0 approaches the ultimate Shannon limit -1.59 dB.
{"title":"A new type of ultimate-Shannon-limit channel codes","authors":"F. Lau","doi":"10.1109/atc55345.2022.9943021","DOIUrl":"https://doi.org/10.1109/atc55345.2022.9943021","url":null,"abstract":"In most existing digital communication systems, the received signal strength is usually larger than the noise level. Alternatively, the bit-energy-to-noise-power-spectral-density (Eb/N0) is assumed to be greater than 0 dB. However, in some specific applications such as deepspace communications and quantum key distribution, the received signal power is smaller than the noise power. Under such circumstances, strong error correction codes are required to provide a reliable link between the transmitter and the receiver. In this talk, a new type of error-correction code called “protograph-based low-density parity-check Hadamard codes” is introduced. The codes are shown to provide excellent error performance not only when Eb/N0 is smaller than 0 dB, but also when Eb/N0 approaches the ultimate Shannon limit -1.59 dB.","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":"124860944","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}
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