{"title":"Conflict-Free Vectorized In-order In-place Radix-r Belief Propagation Polar Code Decoder Algorithm","authors":"Arvid B. van den Brink, M. Bekooij","doi":"10.1145/3390525.3390539","DOIUrl":"https://doi.org/10.1145/3390525.3390539","url":null,"abstract":"A vectorized belief propagation polar code decoder is desirable because of the potentially high throughput and the ability of integration in processors that perform vectorized processing and access wide memory words. However, current state-of-the-art belief propagation polar code decoder algorithms do not perform vector processing and store intermediate results in non consecutive memory locations. Also the current state-of-the-art belief propagation polar code decoders require separate memories to store left and right bound intermediate results. In this paper we propose a vectorized in-order in-place belief propagation polar code decoder algorithm where all stages access vectorized data from memory. This results in a high throughput because vectors of elements can be fetched from and stored in memory in each clock cycle. Our algorithm also accommodates for per stage in-place computations which halves the required internal memory. Furthermore, the algorithm has a regular memory addresses access pattern. Conflict free vectorized memory access is achieved by making use of transpose operations on small groups of intermediate results. The use of the transpose operations also results in that both input and output results are placed on subsequent locations in memory.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126773549","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}
{"title":"Fatigue Assessment of Bicep Brachii Muscle Using Surface EMG Signals Obtained from Isometric Contraction","authors":"Tripash Bansal, A. Khan","doi":"10.1145/3390525.3390533","DOIUrl":"https://doi.org/10.1145/3390525.3390533","url":null,"abstract":"In this study, Surface EMG signals are used to analyze the progression of muscular fatigue with time by estimating the change in myoelectric properties when right bicep brachii muscle is subjected to constant force isometric contraction. Muscular fatigue most frequently occurs due to powerful utilization of a group of muscles which can lead to decline in performance or sometimes to injury and can go undetected at early stage. In this proposed method, Discrete Wavelet Transform is used to decompose the EMG signals using Daubechies type 7 wavelet with three level of decomposition. For each detailed and approximate component temporal features like Root Mean Square, and Spectral features like Mean frequency, Median frequency and Energy are evaluated. Results show that mean frequency values perform significantly better in estimating the level of muscular fatigue with time. Furthermore, using Support Vector Machine classifier, the subjects were classified into muscular and non-muscular groups and second level detailed component shows high class separability in feature space.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130302860","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}
{"title":"Effectiveness of Formative E-assessment Procedure: Learning Calculus In Blended Learning Environment","authors":"Shiau Foong Wong, M. Mahmud, Shiau San Wong","doi":"10.1145/3390525.3390526","DOIUrl":"https://doi.org/10.1145/3390525.3390526","url":null,"abstract":"Emergence of new educational technologies is changing the way we learn. Online communication acts as one of the crucial internet applications and assets are widely used in higher education in this millennium era. Due to the pressure to adapt to the digital age, educators are striving to learn and equip themselves with the 21st century teaching strategies in order to augment students' experiences. Numerous literatures have established that teaching and learning in blended learning environment leads to the need for suitable and effective assessment practices to be designed to enhance the learning of the students in order to beget positive impacts. On the other hand, there are researches reveal that teacher-centered approach is more effective and better. Since none of the recent studies described the effectiveness of the formative e-assessment to learn calculus in blended learning environment in an American Degree Program, thus, this study is aimed at examining the effectiveness of the formative e-assessment procedure integrated in a blended learning setting by identifying the students' skills and knowledge acquisition for a Calculus course in American Degree Program in Malaysia. The findings indicate that the skills and knowledge acquired by the students are effectively enhanced and consolidated, with learning achievement of over 80% in e-assessment which reflects that the learning outcomes of the course were well achieved.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133341928","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}
{"title":"Study on A Navigation System for Visually Impaired Persons based on Egocentric Vision Using Deep Learning","authors":"Sho Ooi, Takuya Okita, Mutsuo Sano","doi":"10.1145/3390525.3390536","DOIUrl":"https://doi.org/10.1145/3390525.3390536","url":null,"abstract":"There are 310 thousand visually impaired persons in Japan. They use usually a white cane or a guide dog while walking. However, the number of guide dogs is less than the required number, and the white cane is difficult to get surrounding information. So, we are developing a navigation system based on egocentric vision instead of walking support tools such as a white cane. The aim of the research is to develop the navigation system with to recognize objects and estimate distances using deep learning. Therefore, to investigate to refer to landmarks object for non-handicapped persons while walking and dangerous objects for the visually impaired person. As a result, the error of the distance system for people was less than 10%, and the error of the distance system of 4-5m was less than 1m. In other words, we think that obstacle detection and distance can be presented to visually impaired people using the method proposed in this study.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131772395","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}
{"title":"A Fusion Spectrum Sensing Algorithm Using Energy and Eigenvalues","authors":"He Li, Wenjing Zhao, Minglu Jin, S. Yoo","doi":"10.1145/3390525.3390541","DOIUrl":"https://doi.org/10.1145/3390525.3390541","url":null,"abstract":"A novel fusion spectrum sensing algorithm using energy and eigenvalues is proposed, which employs the energy, maximum eigenvalue and minimum eigenvalue of the sample covariance matrix to construct test statistic. The proposed algorithm includes the MET, MME and EME algorithms as special cases, and it can be seen as a fusion of the test statistics of the MET and EME algorithms. In addition, the false alarm probability and threshold of the proposed method are derived using random matrix theory. The proposed algorithm is a more general algorithm. Simulation results show the effectiveness of the new algorithm.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124634354","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}
{"title":"Joint Power and Bandwidth Allocation Method Based on Immune Genetic Algorithm for Inter-satellite Links in Beidou Navigation Satellite System","authors":"Rui Xue, Cheng Zhao, Huaiyu Tang","doi":"10.1145/3390525.3390530","DOIUrl":"https://doi.org/10.1145/3390525.3390530","url":null,"abstract":"Constructing the navigation constellation with inter-satellite links has become one of the important development trends for the Beidou navigation satellite system. Power and bandwidth are limited, but precious resources are on-board. How to reasonably distribute the two resources among ISLs to attain high channel capacity while considering both energy and operation efficiencies frequently catches the scholars' attention. Considering the insufficient global optimization ability of the greedy algorithm, which leads to a limited energy efficiency performance improvement, an allocation method based on immune genetic algorithm is proposed. This method uses a selection, crossover, and mutation structure to achieve a global search. It also improves the algorithm's convergence speed through an immune structure and achieves the improvement of the system energy efficiency. Simulation results show that the proposed method has achieved a better energy efficiency than the greedy algorithm in MEO scenarios with large service requirements and in GEO scenarios with a large number of links. The total system power consumption has decreased.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130508958","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}
{"title":"The Survey of Software Display Technology for General Radar Terminal","authors":"Zhenkui Miao, Jialin Zhang, Xiangying Kong","doi":"10.1145/3390525.3390532","DOIUrl":"https://doi.org/10.1145/3390525.3390532","url":null,"abstract":"Based on the whole integrated computing system, processing of radar video data based on network, how to realize the terminal display of general radar has become an important research direction, and the displaying of effect has become a key factor to measure the quality of the equipment. Compared with the three methods which are the windows multimedia's instructions, the developments of DirectX3D and OpenGL language, it uses the GLSL method to achieve the display and the attenuation. It is the best method and the effect is the greatest.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132337763","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}
{"title":"Modified Roll-off Filter with Optimized Impulse Response for Reducing PAPR of Transmitted Signal","authors":"Yuki Fujiya, N. Izuka","doi":"10.1145/3390525.3390538","DOIUrl":"https://doi.org/10.1145/3390525.3390538","url":null,"abstract":"This paper discusses a modified roll-off filter that yields lower PAPR (peak-to-average power ratio) than that of the conventional roll-off filter. The modified filter has a roll-off function expressed in a sum of sinusoidal functions such as α1 sin(x) and α2 sin(3x). Since a different combination of the coefficients of the sinusoidal functions yields a different impulse response as a candidate while satisfying the Nyquist theorem under the constant bandwidth condition given by the roll off factor, impulse response optimization to reduce a PAPR can be carried out through selecting the response with the lowest PAPR from among the candidates. The modified filter with the roll-off factor of 0.45 yields the same PAPR as that of the conventional filter with the roll-off factor of 0.5. The above result shows that a narrower signal bandwidth under a constant PAPR condition or a lower PAPR under a constant bandwidth condition than the conventional filter can be achieved by the impulse response optimization of the modified filter.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121319235","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}
{"title":"MOOCs: An Enquiry of Variables and Effect Sizes","authors":"M. Mahmud, Shiau Foong Wong, M. S. A. Bakar","doi":"10.1145/3390525.3390527","DOIUrl":"https://doi.org/10.1145/3390525.3390527","url":null,"abstract":"The proliferation of Massive Open Online Courses (MOOCs) is widespread. Debates gyrating the issue have been rather polarizing, with one spectrum presaging it as the forefront of the 21st century education, and another one brushing it off as another hype of a contemporary marketing fad. Nonetheless, the extent of prospect exists in myriad of aspects and pathways, considering the large number of end users and institutions employing MOOCs as an alternative to the existing pedagogic modes. Scalability and open designs in MOOCs create tremendous potential for experimentation with online approach, enabling the expansion and access of higher education to all. Thus, this paper examines the most prevalent dependent variables measured in MOOCs, and the correlation of powerful combined effect sizes with the commissioning of the ascertained MOOCs. Eight samples were included based on their significance and established priori to probe on the in-depth of the treatment effect, in which the magnitude of effect size (ES) for the selected samples were tabulated according to the Cohen's d formula and benchmark (1988; 1992). Majority of the samples tested on the Performance variable (n = 27) as the highest frequency, followed by the Attitude (n = 11), Interaction (n=3) and lastly Satisfaction (n =1), predominantly measured with small effect size. By and large, the combined effect sizes for the eight samples suggest wide-ranging positive repercussions; however, limited to mediating and confounding variables. Thus, further inquiries are requisite to understand the overall functionality.","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121397024","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}
{"title":"Lightweight Super-resolution Learning Model for Extremely Exposed Images","authors":"Tzu-Hsiu Chen, Chung-Hsun Huang, Y. Chu","doi":"10.1145/3390525.3390529","DOIUrl":"https://doi.org/10.1145/3390525.3390529","url":null,"abstract":"Video surveillance system adopting wireless sensor network (WSN) becomes more and more popular. To achieve energy efficiency and low transmitting bandwidth, low-cost and low-resolution video camera may be used. However, captured image/video with low resolution may cause information loss; for example, suspicious objects such as a bomb, and emergent events such as fire emergency. Moreover, it is getting deteriorated in case an extremely exposed scene is presented. In this paper, a lightweight learning-based super-resolution (LLBSR) image reconstruction algorithm is proposed for the control center of surveillance system to recover information details from low-resolution images with extremely exposed scenes. The captured video sequences were processed via a simplified difference residual network (DRN) to improve contrast first. Then the pre-processed video sequences were scaled up via a lightweight SR neural network (LSRNN). Experimental results show that the proposed algorithm can achieve a comparable PSNR performance using a simple neural network as compared with a famous prior work with very deep neural network","PeriodicalId":201179,"journal":{"name":"Proceedings of the 2020 8th International Conference on Communications and Broadband Networking","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131462395","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}