2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT)最新文献_第2页

Owcsimpy: A 3D Simulator for Indoor Optical Wireless Channels Owcsimpy:室内光学无线通道的3D模拟器

2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT) Pub Date : 2021-12-06 DOI: 10.1109/SOFTT54252.2021.9673144

A. A. Purwita, N. N. Qomariyah

{"title":"Owcsimpy: A 3D Simulator for Indoor Optical Wireless Channels","authors":"A. A. Purwita, N. N. Qomariyah","doi":"10.1109/SOFTT54252.2021.9673144","DOIUrl":"https://doi.org/10.1109/SOFTT54252.2021.9673144","url":null,"abstract":"In this paper, a 3D simulator for indoor optical wireless channels, named owcsimpy, is introduced. One of the advantages of owcsimpy is the ability to generate channel impulse responses (CIRs) with realistic environments. Envi-ronments with different furniture, blocking objects (such as human bodies), randomly-oriented stations, or mobile users can be modeled with owcsimpy. In addition, owcsimpy is a lightweight library that can be easily installed in many different machines, which makes it easy to produce a dataset of CIRs. In this paper, different use cases of owcsimpy are discussed. First, we demonstrate how to generate different scenarios ranging from a simple one, e.g., an indoor room with a light emitting diode (LED) and a photodiode (PD), to more complicated scenarios, e.g., an open office room with multiple LEDs and PDs. Second, CIRs that are generated by considering randomly-oriented mobile stations are used to calculate the coherence time of indoor wireless optical channels. Other potential applications of owcsimpy that show the advantage of the library to enable future research on LiFi are also presented at the end of the paper.","PeriodicalId":443155,"journal":{"name":"2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122865160","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

Practical Transceiver Recovery Extension (T-REX) for Post-Disaster Recovery Networks 用于灾后恢复网络的实用收发器恢复扩展(T-REX)

2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT) Pub Date : 2021-12-06 DOI: 10.1109/SOFTT54252.2021.9673143

Dyan Ahadiansyah, Okzata Recy, Lia Suci Waliani, Khoirul Anwar

引用次数: 0

Joint Time and Power Control Scheme for NOMA-enabled D2D Users with Energy Harvesting in IoT Environment 物联网环境下支持noma的D2D用户能量收集联合时间和功率控制方案

2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT) Pub Date : 2021-12-06 DOI: 10.1109/SOFTT54252.2021.9673146

Mohammad Aftab Alam Khan, H. Kaidi, N. Ahmad

{"title":"Joint Time and Power Control Scheme for NOMA-enabled D2D Users with Energy Harvesting in IoT Environment","authors":"Mohammad Aftab Alam Khan, H. Kaidi, N. Ahmad","doi":"10.1109/SOFTT54252.2021.9673146","DOIUrl":"https://doi.org/10.1109/SOFTT54252.2021.9673146","url":null,"abstract":"Energy efficiency in underlying wireless commu-nication systems is challenging. There are several device-to-device (D2D) groups in which an individual group contains one transmitter and two receivers laying in a cellular network. The downlink (DL) transmission helps the transmitter of the D2D group (DG) for energy harvesting (EH). Harvested and stored energy is used to transfer the information to the respective D2D receivers $(DRX)$ over the same spectrum, simultaneously. In this paper, the power allocation scheme is utilized to optimize the D2D transmitter $(DT_{X})$ power and to maximise the DG's energy-efficiency (EE). The user of poor channel conditions of a DG is affected by the strong channel conditions due to intra-user interference, which reduces the EE of the respective group. Therefore, a non-orthogonal multiple access (NOMA) technique is employed on the DG's transmitter to reduce intra-user interfer-ence. Numerical results demonstrate that the spectrum efficiency and EE of a network can be enhanced by maximising the EE and optimising the power of transmitters in DGs using successive convex approximation.","PeriodicalId":443155,"journal":{"name":"2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116418835","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

Disaster Area Network Expansion Using Drones Based Ad-hoc Cellular Communications 基于无人机的自组织蜂窝通信的灾区网络扩展

2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT) Pub Date : 2021-12-06 DOI: 10.1109/SOFTT54252.2021.9673514

Syed Aamer Hussain, N. Ahmad, L. Latiff, Salma Badawi Mohammed Ahmed, Norliza Mohamed

{"title":"Disaster Area Network Expansion Using Drones Based Ad-hoc Cellular Communications","authors":"Syed Aamer Hussain, N. Ahmad, L. Latiff, Salma Badawi Mohammed Ahmed, Norliza Mohamed","doi":"10.1109/SOFTT54252.2021.9673514","DOIUrl":"https://doi.org/10.1109/SOFTT54252.2021.9673514","url":null,"abstract":"The aftermath of a disaster is a state of an emer-gency with damaged cellular towers and broken communication links. The situation requires a rapidly deployable communications network to conduct rescue operations. This paper presents a network architecture for handling disaster area communication, dealing with the execution of routing protocols fulfilling the network requirements. The study uses the NetSim network tool combined with the MATLAB API for designing the model. Mobile ad-hoc network (MANET) is simulated using drones as the mobile nodes providing connectivity with the victim cell phones. The data from the network is communicated to the fixed-mobile infrastructure through a base station mounted on a mobile remote vehicle (MRV). The effectiveness of the network is bench-marked based on battery usage, latency, and reliability of communication. The study's outcome is to reduce the communication delay, minimise the drone platform's energy consumption, and improve routing efficiency. The comparison shows DSR to have 0.1% and 0.2% better battery consumption than the AODV and OLSR, respectively. At the same time, OLSR is found to have the best response with the highest throughput of 0.59Mbps and low network latency of 0.277 microseconds.","PeriodicalId":443155,"journal":{"name":"2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT)","volume":"297 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123121986","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

Enhancement of Antenna Array Bandwidth through Matching Impedance Modification Using Double Stub Matching on Feeding 馈源双根匹配匹配阻抗修正提高天线阵列带宽

2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT) Pub Date : 2021-12-06 DOI: 10.1109/SOFTT54252.2021.9673147

Hari Heru Abrianto, Norliza Mohamed, R. Dziyauddin, S. Sam, Mohd Azri Mohd Izhar, N. Ahmad

{"title":"Enhancement of Antenna Array Bandwidth through Matching Impedance Modification Using Double Stub Matching on Feeding","authors":"Hari Heru Abrianto, Norliza Mohamed, R. Dziyauddin, S. Sam, Mohd Azri Mohd Izhar, N. Ahmad","doi":"10.1109/SOFTT54252.2021.9673147","DOIUrl":"https://doi.org/10.1109/SOFTT54252.2021.9673147","url":null,"abstract":"Microstrip antennas are one of the most widely used types of antennas in various applications in communication systems. However, microstrip antenna experiences imbalance impedance, which in turn affects the performance of the antenna with narrow bandwidth as well as reducing the radiation emission of the radio wave. Therefore, in this paper increases bandwidth by changing the matching impedance using a double stub on the feeding antenna array. The double stub feeding is proposed for a dual-frequency band, in which at 2.4 and 5.8 GHz, respectively with identical dimension of antenna patch elements. This proposed structure is placed on the main supply of the microstrip antenna, specifically to match the antenna impedance with the transmission line impedance. From the simulation results, the appropriate impedance (Z) parameter values of 47 Ω at frequency of 2.4 GHz and 49 Ω at 5.8 GHz were correspondingly obtained. The return loss (RL) of -27 dB at 2.4 GHz and -36 dB at 5.8 GHz were also achieved. The voltage standing wave ratio (VSWR) has shown the best value of 1.09 and 1.03 respectively at 2.4 and 5.8 GHz. Improvements to the bandwidth extend beyond 3 times 2.4 GHz and 18 times at 5.8 GHz. Therefore, the proposed antenna can be used in Wireless Local-Area Network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) frequency bands.","PeriodicalId":443155,"journal":{"name":"2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116344924","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

Design of Rateless Polar Accumulate Tornado Codes Using EXIT Chart for UAV Communications 基于出口图的无人机通信无速率极地累积龙卷风编码设计

2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT) Pub Date : 2021-12-06 DOI: 10.1109/SOFTT54252.2021.9673142

Citra Dewi Anggraeni, Khoirul Anwar

{"title":"Design of Rateless Polar Accumulate Tornado Codes Using EXIT Chart for UAV Communications","authors":"Citra Dewi Anggraeni, Khoirul Anwar","doi":"10.1109/SOFTT54252.2021.9673142","DOIUrl":"https://doi.org/10.1109/SOFTT54252.2021.9673142","url":null,"abstract":"This paper proposes Tornado codes based on the concatenation of Polar codes, Luby Transform (LT) codes, and Accumulator, referred to as rateless Polar Accumulate Tornado (PA-Tornado) codes for possible applications to unmanned aerial vehicle (UAV) communications, where the channels are assumed to be highly varying. The accumulator is added after the LT codes to avoid direct connection of LT check-nodes (CND) to the channels. The effectiveness of the proposed PA - Tornado codes is analyzed using Extrinsic Information Transfer (EXIT) chart under the binary erasure channels (BEC) due to its simplicity. We reveal the mechanism of rateless capability of the proposed codes, which is not the case of traditional codes, as well as the significant contribution of the accumulator to bring the MI of LT to close to (1,1) point. With the proposed rateless PA-Tornado codes, the EXIT tunnel, which is originaly closed at $epsilon=0.67$, suddenly open by performing internal iteration of accumulator. We also provide a suitable degree distribution having minimum EXIT chart gap, but practical for UAV communications.","PeriodicalId":443155,"journal":{"name":"2021 IEEE Symposium On Future Telecommunication Technologies (SOFTT)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131477228","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