Journal of Information and Intelligence最新文献_第7页

An electromechanically reconfigurable intelligent surface for enhancing sub-6G wireless communication signal 一种用于增强sub-6G无线通信信号的机电可重构智能表面

Journal of Information and Intelligence Pub Date : 2023-09-01 DOI: 10.1016/j.jiixd.2023.06.009

Kai Qu, Ke Chen, Jianmin Zhao, Na Zhang, Qi Hu, Junming Zhao, Tian Jiang, Yijun Feng

{"title":"An electromechanically reconfigurable intelligent surface for enhancing sub-6G wireless communication signal","authors":"Kai Qu, Ke Chen, Jianmin Zhao, Na Zhang, Qi Hu, Junming Zhao, Tian Jiang, Yijun Feng","doi":"10.1016/j.jiixd.2023.06.009","DOIUrl":"https://doi.org/10.1016/j.jiixd.2023.06.009","url":null,"abstract":"<div><p>Reconfigurable intelligent surface (RIS) is emerged as a promising technique to solve the challenges faced by future wireless communication networks. Although the most commonly used electrically-controlled RISs can achieve millisecond-scale speed of dynamic switch, they have a large number of microwave circuit elements (such as PIN diodes or varactors) which will bring non-negligible insertion loss, and the complicity of the bias network to electrically addressing each element will increase with the expansion of the RIS aperture. Aiming at further reducing the fabrication cost and power consumption, herein an electromechanical RIS used for sub-6G wireless communication is proposed. The electromechanical RIS is designed with a passive metasurface and step-motor driver modules, providing simultaneous high-efficiency reflection (over 80%) and continuous reflection phase coverage of 360°. Through electromechanical control, the RIS system can realize different reflective wavefront shaping, and has been employed in the indoor sub-6G wireless environment demonstrating a maximum signal improvement of 8.3 dB. The proposed electromechanical RIS is particularly useful for wireless signal enhancement in static blind area, and has the obvious advantage of not requiring continuous power supply after the RIS being regulated. Therefore, it greatly reduces the overall cost and power consumption which may have potentials in indoor application scenarios for improving wireless communication performance.</p></div>","PeriodicalId":100790,"journal":{"name":"Journal of Information and Intelligence","volume":"1 3","pages":"Pages 207-216"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49755531","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

Rate optimization using low complex methods with reconfigurable intelligent surfaces 基于可重构智能曲面的低复杂度速率优化方法

Journal of Information and Intelligence Pub Date : 2023-09-01 DOI: 10.1016/j.jiixd.2023.06.004

Saber Hassouna, Muhammad Ali Jamshed, Masood Ur Rehman, Muhammad Ali Imran, Qammer H. Abbasi

{"title":"Rate optimization using low complex methods with reconfigurable intelligent surfaces","authors":"Saber Hassouna, Muhammad Ali Jamshed, Masood Ur Rehman, Muhammad Ali Imran, Qammer H. Abbasi","doi":"10.1016/j.jiixd.2023.06.004","DOIUrl":"https://doi.org/10.1016/j.jiixd.2023.06.004","url":null,"abstract":"<div><p>With the help of a developing technology called reconfigurable intelligent surfaces (RISs), it is possible to modify the propagation environment and boost the data rates of wireless communication networks. In this article, we optimized the phases of the RIS elements and performed a fair power allocation for each subcarrier over the full bandwidth in a single-input-single-output (SISO) wideband system where the user and the access point (AP) are provided with a single antenna. The data rate or its equivalent channel power is maximized by proposing different low-complex algorithms. The strongest tap maximization (STM) and power methods are compared with the semidefinite relaxation (SDR) method in terms of computational complexity and data rate performance. Runtime and complexity analysis of the suggested methods are computed and compared to reveal the actual time consumption and the required number of operations for each method. Simulation results show that with an optimized RIS, the sum rate is 2.5 times higher than with an unconfigured surface, demonstrating the RIS's tremendous advantages even in complex configurations. The data rate performance of the SDR method is higher than the power method and less than the STM method but with higher computational complexity, more than 6 million complex operations, and 50 min of runtime calculations compared with the other STM and power optimization methods.</p></div>","PeriodicalId":100790,"journal":{"name":"Journal of Information and Intelligence","volume":"1 3","pages":"Pages 267-280"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49755101","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

In-situ manipulation of wireless link with reinforcement-learning-driven programmable metasurface in indoor environment 室内环境下基于强化学习驱动的可编程元表面无线链路的原位操作

Journal of Information and Intelligence Pub Date : 2023-09-01 DOI: 10.1016/j.jiixd.2023.06.007

Jiawen Xu , Rong Zhang , Jie Ma , Hanting Zhao , Lianlin Li

{"title":"In-situ manipulation of wireless link with reinforcement-learning-driven programmable metasurface in indoor environment","authors":"Jiawen Xu , Rong Zhang , Jie Ma , Hanting Zhao , Lianlin Li","doi":"10.1016/j.jiixd.2023.06.007","DOIUrl":"https://doi.org/10.1016/j.jiixd.2023.06.007","url":null,"abstract":"<div><p>It is of great importance to control flexibly wireless links in the modern society, especially with the advent of the Internet of Things (IoT), fifth-generation communication (5G), and beyond. Recently, we have witnessed that programmable metasurface (PM) or reconfigurable intelligent surface (RIS) has become a key enabling technology for manipulating flexibly the wireless link; however, one fundamental but challenging issue is to online design the PM's control sequence in a complicated wireless environment, such as the real-world indoor environment. Here, we propose a reinforcement learning (RL) approach to online control of the PM and thus in-situ improve the quality of the underline wireless link. We designed an inexpensive one-bit PM working at around 2.442 GHz and developed associated RL algorithms, and demonstrated experimentally that it is capable of enhancing the quality of commodity wireless link by a factor of about 10 dB and beyond in multiple scenarios, even if the wireless transmitter is in the glancing angle of the PM in the real-world indoor environment. Moreover, we also prove that our RL algorithm can be extended to improve the wireless signals of receivers in dual-receiver scenario. We faithfully expect that the presented technique could hold important potentials in future wireless communication, smart homes, and many other fields.</p></div>","PeriodicalId":100790,"journal":{"name":"Journal of Information and Intelligence","volume":"1 3","pages":"Pages 217-227"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49755532","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

Effects of realistic reradiation models in digital reconfigurable intelligent surfaces 真实辐射模型对数字可重构智能曲面的影响

Journal of Information and Intelligence Pub Date : 2023-09-01 DOI: 10.1016/j.jiixd.2023.06.005

Marco Di Renzo , Abdelhamed Mohamed , Alessio Zappone , Gabriele Gradoni , Marco Rossi , Massimo Moccia , Giuseppe Castaldi , Vincenzo Galdi

引用次数: 1

Reciprocity evaluation based adaptive CCM reconstruction in FDD multi-antenna systems 基于互易性评价的FDD多天线系统自适应CCM重构

Journal of Information and Intelligence Pub Date : 2023-07-01 DOI: 10.1016/j.jiixd.2023.04.001

Fangyuan Liao, Yuhan Ruan, Hangyu Zhang, Rui Zhang, Tao Li, Yongzhao Li

引用次数: 0

D-Fi: Domain adversarial neural network based CSI fingerprint indoor localization D-Fi:基于域对抗神经网络的CSI指纹室内定位

Journal of Information and Intelligence Pub Date : 2023-07-01 DOI: 10.1016/j.jiixd.2023.04.002

Wei Liu, Zhiqiang Dun

{"title":"D-Fi: Domain adversarial neural network based CSI fingerprint indoor localization","authors":"Wei Liu, Zhiqiang Dun","doi":"10.1016/j.jiixd.2023.04.002","DOIUrl":"https://doi.org/10.1016/j.jiixd.2023.04.002","url":null,"abstract":"<div><p>Deep learning based channel state information (CSI) fingerprint indoor localization schemes need to collect massive labeled data samples for training, and the parameters of the deep neural network are used as the fingerprints. However, the indoor environment may change, and the previously constructed fingerprint may not be valid for the changed environment. In order to adapt to the changed environment, it requires to recollect massive amount of labeled data samples and perform the training again, which is labor-intensive and time-consuming. In order to overcome this drawback, in this paper, we propose one novel domain adversarial neural network (DANN) based CSI Fingerprint Indoor Localization (D-Fi) scheme, which only needs the unlabeled data samples from the changed environment to update the fingerprint to adapt to the changed environment. Specifically, the previous environment and changed environment are treated as the source domain and the target domain, respectively. The DANN consists of the classification path and the domain-adversarial path, which share the same feature extractor. In the offline phase, the labeled CSI samples are collected as source domain samples to train the neural network of the classification path, while in the online phase, for the changed environment, only the unlabeled CSI samples are collected as target domain samples to train the neural network of the domain-adversarial path to update parameters of the feature extractor. In this case, the feature extractor extracts the common features from both the source domain samples corresponding to the previous environment and the target domain samples corresponding to the changed environment. Experiment results show that for the changed localization environment, the proposed D-Fi scheme significantly outperforms the existing convolutional neural network (CNN) based scheme.</p></div>","PeriodicalId":100790,"journal":{"name":"Journal of Information and Intelligence","volume":"1 2","pages":"Pages 104-114"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753628","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

Block Markov superposition transmission of LDPC codes LDPC码的块马尔可夫叠加传输

Journal of Information and Intelligence Pub Date : 2023-07-01 DOI: 10.1016/j.jiixd.2023.05.001

Qianfan Wang , Kongjing Guo , Xiao Ma

{"title":"Block Markov superposition transmission of LDPC codes","authors":"Qianfan Wang , Kongjing Guo , Xiao Ma","doi":"10.1016/j.jiixd.2023.05.001","DOIUrl":"https://doi.org/10.1016/j.jiixd.2023.05.001","url":null,"abstract":"<div><p>In this paper, based on the block Markov superposition transmission (BMST) technique, we present a new class of coupled low-density parity-check (LDPC) codes for the transport block (TB)-based transmission to improve the error-correcting performance. For encoding, the previous LDPC codewords corresponding to a TB (at prior time slot) are interleaved and superimposed onto the current LDPC codewords, resulting in the transmitted codewords. For decoding, the sliding window decoding algorithm with sum-product or min-sum implementations can be employed, inheriting a relatively low-latency decoding. A distinguished advantage of the proposed coded transmission over spatially coupled LDPC (SC-LDPC) codes is that the encoder/decoder of the proposed codes can be designed by reusing the encoder/decoder architecture of component block LDPC codes. To analyze the waterfall performance of BMST-LDPC code ensembles, we present the protograph-based EXIT chart analysis, which can efficiently predict the error-correcting performance in waterfall region. To analyze the error-floor performance of BMST-LDPC codes, we employ the genie-aided (GA) lower bound, which can efficiently predict the error-correcting performance in error-floor region. For ease of implementation, the BMST-LDPC codes are constructed by taking the (2, 4)-raptor-like LDPC codes or the 5G LDPC codes as the basic components. The numerical results reveal that the proposed codes can have capacity-approaching performance, exhibiting a gap of 0.007 dB away from the corresponding Shannon limit. They also reveal that, by using the proposed BMST construction, the error-correcting performance of the original 5G block LDPC codes can be significantly improved, achieving coding gains up to one dB over the AWGN channels and two dB over the fast fading channels.</p></div>","PeriodicalId":100790,"journal":{"name":"Journal of Information and Intelligence","volume":"1 2","pages":"Pages 115-133"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753633","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 heuristic mixed real-time task allocation of virtual utilization in multi-core processor 多核处理器虚拟利用率的启发式混合实时任务分配

Journal of Information and Intelligence Pub Date : 2023-07-01 DOI: 10.1016/j.jiixd.2023.03.002

Hongbiao Liu , Mengfei Yang , Tingyu Wang , Chenghao Song , Shenghui Zhu , Xi Chen

{"title":"A heuristic mixed real-time task allocation of virtual utilization in multi-core processor","authors":"Hongbiao Liu , Mengfei Yang , Tingyu Wang , Chenghao Song , Shenghui Zhu , Xi Chen","doi":"10.1016/j.jiixd.2023.03.002","DOIUrl":"https://doi.org/10.1016/j.jiixd.2023.03.002","url":null,"abstract":"<div><p>Multi-core processor is widely used as the running platform for safety-critical real-time systems such as spacecraft, and various types of real-time tasks are dynamically added at runtime. In order to improve the utilization of multi-core processors and ensure the real-time performance of the system, it is necessary to adopt a reasonable real-time task allocation method, but the existing methods are only for single-core processors or the performance is too low to be applicable. Aiming at the task allocation problem when mixed real-time tasks are dynamically added, we propose a heuristic mixed real-time task allocation algorithm of virtual utilization VU-WF (Virtual Utilization Worst Fit) in multi-core processor. First, a 4-tuple task model is established to describe the fixed-point task and the sporadic task in a unified manner. Then, a VDS (Virtual Deferral Server) for serving execution requests of fixed-point task is constructed and a schedulability test of the mixed task set is derived. Finally, combined with the analysis of VDS's capacity, VU-WF is proposed, which selects cores in ascending order of virtual utilization for the schedulability test. Experiments show that the overall performance of VU-WF is better than available algorithms, not only has a good schedulable ratio and load balancing but also has the lowest runtime overhead. In a 4-core processor, compared with available algorithms of the same schedulability ratio, the load balancing is improved by 73.9%, and the runtime overhead is reduced by 38.3%. In addition, we also develop a visual multi-core mixed task scheduling simulator RT-MCSS (open source) to facilitate the design and verification of multi-core scheduling for users. As the high performance, VU-WF can be widely used in resource-constrained and safety-critical real-time systems, such as spacecraft, self-driving cars, industrial robots, etc.</p></div>","PeriodicalId":100790,"journal":{"name":"Journal of Information and Intelligence","volume":"1 2","pages":"Pages 156-177"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49767537","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

Mapping prediction with recurrent neural networks for future LISP enabled networks 用递归神经网络预测未来支持LISP的网络

Journal of Information and Intelligence Pub Date : 2023-07-01 DOI: 10.1016/j.jiixd.2023.04.003

Yue Li, Shuai Guo, Qipeng Song, Yao Wang, Xiaomin Wei, Jianfeng Ma

{"title":"Mapping prediction with recurrent neural networks for future LISP enabled networks","authors":"Yue Li, Shuai Guo, Qipeng Song, Yao Wang, Xiaomin Wei, Jianfeng Ma","doi":"10.1016/j.jiixd.2023.04.003","DOIUrl":"https://doi.org/10.1016/j.jiixd.2023.04.003","url":null,"abstract":"<div><p>Locator/identifier separation paradigm (LISP) is an emerging Internet architecture evolution trend that decouples the identifier and location of an entity attached to the Internet. Due to its flexibility, LISP has seen its application in various fields such as mobile edge computing, and V2X networks. However, LISP relies on a DNS-like mapping system to associate identifiers and locations before connection establishment. Such a procedure incurs an extra latency overhead and thus hinders the adoption of LISP in delay-sensitive use cases. In this paper, we propose a novel RNN-based mapping prediction scheme to boost the performance of the LISP mapping resolution, by modeling the mapping procedure as a time series prediction problem. The key idea is to predict the mapping data regarding services to be utilized by users in edge networks administered by xTRs and proactively cache the mapping information within xTRs in advance. We compare our approach with several baseline methods, and the experiment results show a 30.02% performance gain in LISP cache hit ratio and 55.6% delay reduction compared with the case without mapping prediction scheme. This work preliminarily proves the potential of the approach in promoting low-latency LISP-based use cases.</p></div>","PeriodicalId":100790,"journal":{"name":"Journal of Information and Intelligence","volume":"1 2","pages":"Pages 134-147"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753817","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

AWI-BS: An adaptive weight incentive for blockchain sharding AWI-BS:区块链分片的自适应权重激励

Journal of Information and Intelligence Pub Date : 2023-07-01 DOI: 10.1016/j.jiixd.2023.01.001

Zuobin Ying , Laican Song , Deng Chen , Wusong Lan , Ximeng Liu

{"title":"AWI-BS: An adaptive weight incentive for blockchain sharding","authors":"Zuobin Ying , Laican Song , Deng Chen , Wusong Lan , Ximeng Liu","doi":"10.1016/j.jiixd.2023.01.001","DOIUrl":"https://doi.org/10.1016/j.jiixd.2023.01.001","url":null,"abstract":"<div><p>The sharding technique enables blockchain to process transactions in parallel by dividing blockchain nodes into small groups, each of which handles a subset of all transactions. One of the issues with blockchain sharding is generating a large number of cross-shard transactions that need to be checked on the output shard as well as the destination shard. Our analysis suggests that the processing efficiency of cross-shard transactions is consistent with the barrel effect, i.e., that efficiency is more dependent on slower processing shard. Most of the existing studies focus on how to deal with cross-shard transactions, but neglecting the fact that the relative independence between sharding results in different incentive costs between sharding. We perform a sharding analysis on 100,000 real transactions data on Ethereum, and the results show that there is a large difference in gas prices between different shards indeed. In this paper, we propose an Adaptive Weight Incentive (AWI) for Blockchain Sharding, which uses adaptive weight in place of traditional incentive, to address the problem of differing incentive costs for each shard. Take Ethereum as an example, AWI-BS computes the weight of a transaction as a function of a combination of the underlying gas price, the latency of the transaction, and the urgency of the transaction. Then the node chooses which transaction to pack based on the AWI-BS. Lastly, we also perform an in-depth analysis of AWI-BS's security and effectiveness. The evaluation indicates that AWI-BS outperforms the other alternatives in terms of transaction confirmation latency, transaction hit rate, and system throughput.</p></div>","PeriodicalId":100790,"journal":{"name":"Journal of Information and Intelligence","volume":"1 2","pages":"Pages 87-103"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49767528","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