2018 IEEE World Symposium on Communication Engineering (WSCE)最新文献

{"title":"BER Performance of OFDM-based 4096-QAM Using Soft Decision Viterbi Decoding in Multipath Fading","authors":"Ruxiao Tian, Koki Senda, H. Otsuka","doi":"10.1109/WSCE.2018.8690532","DOIUrl":"https://doi.org/10.1109/WSCE.2018.8690532","url":null,"abstract":"Fifth-generation (5G) mobile systems are required to increase data rates. Higher-order quadrature amplitude modulation (QAM) can increase data rates within a limited bandwidth. This paper proposes orthogonal frequency division multiplexing (OFDM)-based 4096-QAM in 5G mobile systems. We present the BER performance of OFDM-based 4096-QAM using soft decision Viterbi decoding as parameters of the coding rate in multipath fading channels in comparison with existing QAM and quadrature phase shift keying. We also clarify the influence of phase error for OFDM-based 4096-QAM, i.e., the SNR penalty in the presence of phase error by link-level simulations.","PeriodicalId":276876,"journal":{"name":"2018 IEEE World Symposium on Communication Engineering (WSCE)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114694784","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":"Probability Bound of ML DOA Spectrum at Specific Search Azimuth Being the Largest of the ML Spectra at All Search Azimuths","authors":"J. Paik, Joon-Ho Lee","doi":"10.1109/WSCE.2018.8690533","DOIUrl":"https://doi.org/10.1109/WSCE.2018.8690533","url":null,"abstract":"For estimation of azimuth using the ML DOA estimation algorithm, the bound of the probability that the spectrum at specific search angle is greatest of the spectra at all search angles is derived. A random variable is defined as the difference of the two ML spectra at two different angles, and the probability density function (PDF) of the random variable is evaluated via the characteristic function of the random variable. The probability that the random variable is positive is calculated from the numerical integration of the PDF of the random variable. Finally, these probabilities for appropriate two search angles are combined to get the lower and the upper bound that the ML spectrum at specific grid is the greatest of spectra at all search angles. Since the probability itself can be evaluated via the Monte-Carlo simulation, the derived expression can be validated by checking that the probability itself from the Monte-Carlo simulation is actually between the derived lower bound and the upper bound of the probability.","PeriodicalId":276876,"journal":{"name":"2018 IEEE World Symposium on Communication Engineering (WSCE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126727878","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":"Wireless Backhaul Network Optimization Using Automated KPIs Monitoring System Based on Time Series Forecasting","authors":"A. Mahmood, M. L. M. Kiah, S. Azzuhri, Adnan N. Qureshi","doi":"10.1109/WSCE.2018.8690543","DOIUrl":"https://doi.org/10.1109/WSCE.2018.8690543","url":null,"abstract":"Owing to the advancement of a communication network to the fourth generation and soon moving towards the fifth generation, the capacity demand has substantially increased in recent years. Currently, ‘point-to-point microwave’ an imperative technology is used in wireless backhaul networks around the globe that bequeaths interconnectivity amid the core network and the base stations. Because of this high demand, the wireless backhaul network optimization is a very important factor and has become the iterative process for better coverage and delivering high Quality of Service (QoS). To facilitate this process, traffic projections execute a significant job to enrich the network excellence resulted in better network capacity planning and frequency reuse. We proposed an adaptive solution for network Key Performance Indicators (KPIs) monitoring based on time series forecasting. The forecasting is grounded on Autoregressive Integrated Moving Average (ARIMA) models, Autoregressive (AR) and Multilayer perceptrons (MLP) neural network method. It analyzes the network utilization on specific time intervals (past and current data) and forecasts future requirements. It investigates observed unbalanced resources allocations in both ways underutilize and overutilize links based on real network utilization. Based on the proposed system forecasted results, the optimal solution for network capacity planning and frequency channel reuse will be suggested to reduce the resource wastage. We have observed that in the context of convergence time the AR is best and MLP with 10 hidden nodes takes longest. But when we discuss the results the MLP with 10 hidden nodes gives the best. The one analysis was done on 181 days observations, we used AR(16), SARIMA(1,0,0)(1,1,0) [7] and MLP 10 hidden nodes with RMSE 37.87, 40.00 and 13.54 respectively it indicates that MLP was best. Conclusively, we evaluated the performance of methods using RMSE. On the grounds of experiments, we perceived that MLP was good in order to predict future capacity.","PeriodicalId":276876,"journal":{"name":"2018 IEEE World Symposium on Communication Engineering (WSCE)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123267882","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":"Increasing the Capacity of Listega Based on Syllable Pattern Using Multicolumn and Bigram Mapping","authors":"Gugy Guztaman Munzi, A. Barmawi","doi":"10.1109/WSCE.2018.8690544","DOIUrl":"https://doi.org/10.1109/WSCE.2018.8690544","url":null,"abstract":"Due to the increasing use of internet, preserving confidentiality and integrity becomes important. One method for preserving them is steganography. There are two types of steganography, noisy and noiseless. One of noiseless steganography method is List Steganography based on syllable pattern proposed by David et al. Since List Steganography based on syllable pattern only embed one character into one column, then the capacity is still low. For increasing the capacity, the proposed method introduced embedding method for two columns where one column can be embedded with up to two characters (one bigram). The characters are embedded based on the syllable and code mapping. Syllable mapping is designed based on the occurrence frequency of syllable in the cover and English dictionary, while code mapping is designed based on the occurrence frequency of the code in the cover. Based on the experiment result, the embedding capacity using English secret message is increased with the rate of 17% to 55%.","PeriodicalId":276876,"journal":{"name":"2018 IEEE World Symposium on Communication Engineering (WSCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130844016","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":"Anonymity in Body Area Sensor Networks-an Insight","authors":"Manorama, I. Snigdh","doi":"10.1109/WSCE.2018.8690529","DOIUrl":"https://doi.org/10.1109/WSCE.2018.8690529","url":null,"abstract":"Based on the statistical surveys and United Nations report; by 2050, 805 out of 1000 people; older than 65 years of age, would suffer from at least one chronic disease. As per estimation 89% of these elderly people are expected to live independently which suggests the adoption of automated mechanism of health monitoring for the elderly. The need arises for developing components of Internet of things and Body Sensor Networks which have the ability to collect and transfer data over network without requiring any assistance. However, the most critical issue with Body sensor networks is the employment of critical and personal data. Our article focuses on the security and privacy concerns of such networks. We propose a mechanism through which data stored in the cloud as well as transferred on the network would be secure with the help of integrating anonymity as a feature.","PeriodicalId":276876,"journal":{"name":"2018 IEEE World Symposium on Communication Engineering (WSCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129094450","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 Tunable Frequency Microstrip Patch Antenna Using Graphene","authors":"Xing-Shuai Rong, Qingmian Wan, Hong-li Peng, Yao-ping Zhang, J. Mao","doi":"10.1109/WSCE.2018.8690538","DOIUrl":"https://doi.org/10.1109/WSCE.2018.8690538","url":null,"abstract":"This paper presents a tunable frequency microstrip patch antenna using graphene. The antenna consists of a rectangular patch with a graphene pad connected to the radiating edge, and a metallic via used to connect graphene pad and ground. The imaginary part of the surface impedance of graphene is larger than that of the real part in THz band. So graphene can be regarded as a reactance component loaded into patch antenna. The surface impedance of graphene can be controlled by changing the applied bias voltage, thereby controlling the input impedance of the antenna. Then the tunable frequency of the antenna is realized. A prototype antenna operating at the frequency of 300GHz. The proposed design can achieve linear frequency tunability in the range above the initial operating frequency.","PeriodicalId":276876,"journal":{"name":"2018 IEEE World Symposium on Communication Engineering (WSCE)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129082205","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 Graphene Loaded THz Patch Antenna with Tunable Frequency","authors":"Xing-Shuai Rong, Qingmian Wan, Hong-li Peng, Yao-ping Zhang, J. Mao","doi":"10.1109/WSCE.2018.8690534","DOIUrl":"https://doi.org/10.1109/WSCE.2018.8690534","url":null,"abstract":"This paper proposes a graphene loaded microstrip patch antenna with tunable frequency at THz. The antenna consists of a rectangular patch with a graphene pad connected to the radiating edge of antenna, and a broadband DC bias circuit to apply bias voltage to graphene pad. Meanwhile, the DC bias circuit can achieve open circuit to high frequency signal, which reduces the influence of DC bias circuit on the input impedance of the antenna. The surface impedance of graphene can be dynamically controlled by changing the applied bias voltage, thus the input impedance of the antenna can be adjusted. Then the tunable frequency of the antenna is realized. A prototype antenna operating at the frequency of 300GHz. The proposed design can achieve linear frequency tunability in the range below the initial operating frequency.","PeriodicalId":276876,"journal":{"name":"2018 IEEE World Symposium on Communication Engineering (WSCE)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115035808","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}