2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC)最新文献_第6页

New Low power Digital Sub-band Predistorter for OFDM Signals 新型OFDM信号低功率数字子带预失真器

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096126

A. N. Lozhkin, T. Maniwa, H. Ishikawa

{"title":"New Low power Digital Sub-band Predistorter for OFDM Signals","authors":"A. N. Lozhkin, T. Maniwa, H. Ishikawa","doi":"10.1109/WPMC48795.2019.9096126","DOIUrl":"https://doi.org/10.1109/WPMC48795.2019.9096126","url":null,"abstract":"The adaptive digital predistorter (DPD) offers an effective technique for compensating for nonlinear distortion and improving the efficiency of high power amplifiers (HPAs). However, in small cell environments, the power consumed by the DPD is no longer negligible and significantly affects the overall efficiency of the DPD+HPA cascade. In this paper, we present new architecture for the baseband DPD that has very low power consumption. The proposed DPD comprises a cascade sub-band filters block and a memoryless adaptive predistorter. The sub-band filtering technique is used to compensate for the orthogonal frequency-division multiplexing (OFDM) signal in-band distortions caused by the HPA memory effect, and the memoryless predistorter compensates for both the in-band and out-of-band transmitting (Tx) signal distortions. The sampling rate of the sub-band filters is only 1/(N$cdot$L) of the sampling rate of the Tx OFDM signal (N is IFFT size, L is the Tx signal oversampling ratio). Therefore, the power consumption of the proposed subband DPD is significantly less than that of the typical memorypolynomial (M-P) DPD operating at a rate of N$cdot$L. The simulation result for a 20-MHz LTE system shows that the power consumed by the proposed sub-band DPD is reduced by a factor of five compared to that consumed by the M-P DPD and provides similar linearization quality.","PeriodicalId":298927,"journal":{"name":"2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"316 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115669782","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

Classification of Elderly Group with Hypertension for Preventing Cardiovascular Disease Complication 老年高血压人群分类对预防心血管疾病并发症的意义

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096081

ChuanHui He, Supansa Chaising, P. Temdee

{"title":"Classification of Elderly Group with Hypertension for Preventing Cardiovascular Disease Complication","authors":"ChuanHui He, Supansa Chaising, P. Temdee","doi":"10.1109/WPMC48795.2019.9096081","DOIUrl":"https://doi.org/10.1109/WPMC48795.2019.9096081","url":null,"abstract":"Nowadays, the amount of elderly people in the world population is increasing dramatically, so their health problem is the main concern. Cardiovascular Disease (CVD) is one of the major health problems for elderly people. Especially, hypertension is the main risk factor causing CVD. Consequently, recognizing the ability to control hypertension is very important for providing appropriate treatment recommendations. Therefore, this paper proposes a classification of an elderly group respecting the controllability of hypertension for preventing CVD complications. Decision tree, artificial neuron network, and K-nearest neighbors are employed and compared for classifying elderly group. Moreover, this paper also aims to find the most suitable classifier for the datasets used in this study. Total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, body mass index, and smoking are considered in this paper as the significant risk factors of hypertension development. All data of these factors are collected from secondary data related to elderly people having hypertension with the number of 748 datasets. Finally, the elderly people are classified into two groups including potential controllable group and potential uncontrollable group. The results show that the decision tree provides the highest accuracy of classification for this dataset with 99.11%.","PeriodicalId":298927,"journal":{"name":"2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"220 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124205734","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

WPMC 2019 Committees WPMC 2019委员会

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/wpmc48795.2019.9096100

引用次数: 0

Effective Ontologies Based on The STEM Learning Concept of Organic Rice Knowledge Using Knowledge Engineering 基于知识工程的有机水稻STEM学习概念的有效本体

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096153

Jirawit Yanchinda

引用次数: 0

A Proposal of Frequency Assigning Method for Bluetooth and WLAN Coexistence in 2.4GHz Band 一种2.4GHz频段蓝牙与WLAN共存的频率分配方法

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096143

Fumiko Ohori, S. Itaya, T. Osuga, K. Maruhashi, F. Kojima

引用次数: 0

UTW-OFDM-based 5G New Radio with Low Out-of-band Emission 基于utw - ofdm的低带外发射5G新无线电

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096103

Riichi Yokoyama, K. Mizutani, T. Matsumura, H. Harada

{"title":"UTW-OFDM-based 5G New Radio with Low Out-of-band Emission","authors":"Riichi Yokoyama, K. Mizutani, T. Matsumura, H. Harada","doi":"10.1109/WPMC48795.2019.9096103","DOIUrl":"https://doi.org/10.1109/WPMC48795.2019.9096103","url":null,"abstract":"For the 5G and beyond, the UTW-OFDM has been proposed as one of the new-waveforms which can strongly suppress out-of-band emission (OOBE) and has high compatibility with the CP-OFDM-based system currently used for the LTE. In the UTW-OFDM system, interference generated by windowing is suppressed by using channel coding, and the practicality of UTW-OFDM has been shown for the IEEE 802.11af system using the convolutional coding and the LTE system using the turbo coding Meanwhile, to our best knowledge, the UTW-OFDM-based 5G system using low-density paritycheck (LDPC) coding has not been presented. In this paper, the authors describe how the UTW-OFDM can be applied to 5G new radio (NR). Firstly, the authors point out that common calculation methods of the log-likelihood ratio (LLR) in the decoding process of the LDPC coding degrade the communication quality, especially in a high SNR environment. Then, an adjustment method of the LLR is proposed to mitigate the degradation of the communication quality and demonstrate that the proposed method strongly suppresses OOBE with maintaining the communication quality when applying the UTW-OFDM to the 5G NR.","PeriodicalId":298927,"journal":{"name":"2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116222156","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: 3

Mixed Waveform Numerology for Performance Enhancement in High Mobility Wireless Networks 用于高移动性无线网络性能增强的混合波形数字命理学

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096085

V. Stoynov, Z. Valkova-Jarvis, D. Mihaylova, G. Iliev, V. Poulkov, A. Mihovska

{"title":"Mixed Waveform Numerology for Performance Enhancement in High Mobility Wireless Networks","authors":"V. Stoynov, Z. Valkova-Jarvis, D. Mihaylova, G. Iliev, V. Poulkov, A. Mihovska","doi":"10.1109/WPMC48795.2019.9096085","DOIUrl":"https://doi.org/10.1109/WPMC48795.2019.9096085","url":null,"abstract":"In order to handle the ever-increasing requirements of mobile users, the design and operation of the physical layer of next-generation cellular networks demand high flexibility and efficiency. In addition, performance enhancement necessitates the support of a wide range of frequencies, intelligent dynamic use of the available spectrum resources, and the implementation of a number of types of waveform. Orthogonal Frequency Division Multiplexing (OFDM), and in particular its ability of Cyclic Prefix (CP) adaptation, appears unable to fulfil the requirements of the different types of services currently utilised by users. In this context, the parameters characterising the different types of waveforms, such as the number of subcarriers, subcarrier spacing (SCS) and slot duration, can be flexibly adapted to the current communication scenario, resulting in a reduction in latency and a significant improvement in user throughput. In this paper, the specific design peculiarities of mixed waveform numerology in relation to high-mobility communication environments characterized by Vehicle-to-Infrastructure (V2I) downlink communications are considered. The results demonstrate that the enhancement of network performance according to the specific channel conditions and level of interference, together with the trade-off between spectral efficiency and computational complexity, are the most important challenges in the design and practical implementation of the mixed waveform numerology concept.","PeriodicalId":298927,"journal":{"name":"2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122962331","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

Power Allocation for Wireless Video Streaming over MIMO Systems with Superposition Coding 基于叠加编码的MIMO系统无线视频流功率分配

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096159

Koji Tashiro, M. Kurosaki, H. Ochi

引用次数: 0

Numerical Link Outage Probability Assessment using Meteorological Data for THz-Band Outdoor Wireless Communication Systems 基于气象数据的太赫兹波段室外无线通信系统链路中断概率数值评估

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096134

Yuki Hatahara, M. Umehira, Xiaoyan Wang, S. Takeda

引用次数: 1

Reliability Analysis of The Smart Farm System: A Case Study of Small and Medium-Sized Farm-Thailand 智能农场系统可靠性分析:以泰国中小型农场为例

2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC) Pub Date : 2019-11-01 DOI: 10.1109/WPMC48795.2019.9096090

Chayapol Kamyod

引用次数: 1