2015 IEEE 12th Malaysia International Conference on Communications (MICC)最新文献

{"title":"3-dB Branch-line coupler using coupled line radial stub with no restriction on coupling power","authors":"N. M. Jizat, N. M. Isa, J. S. Francisca, S. Rahim","doi":"10.1109/MICC.2015.7725444","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725444","url":null,"abstract":"Investigation on the design of coupled line radial stub towards 3-dB branch-line coupler (BLC) operating for fourth generation (4G) Long Term Evolution (LTE) at 3.5 GHz has been presented in this paper. The investigation involves different parameter value of the radius of radial stub and coupled line length at the series and shunt arm of 3-dB BLC designs specifically without restriction on the coupling power performance. The designed BLC was simulated using Rogers RO4003C substrate with thickness of 0.508 mm and dielectric constant of 3.38. The results for proposed radial stub BLC were being compared in terms of S-parameter and phase difference. The comparison shows that 3-dB BLC with radial shaped stub optimized to 79% reduction compared to conventional design without having to compromise the performance result especially with no restriction on the coupling power.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130652234","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":"Cooperative learning for online in-network performance monitoring","authors":"S. B. Joseph, H. R. Loo, I. Ismail, M. N. Marsono","doi":"10.1109/MICC.2015.7725436","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725436","url":null,"abstract":"Motivated by the principles of decentralized in-network management (INM) for future networks, we consider the issue of information exchange among network nodes to improve network performance and scalability. INM concept gives autonomy to each network node to self-govern its behavior and participate in a distributed management in collaboration with the nodes to analyze and manage network resources. However, to ensure this interaction, exchange of network information is imperative. In this paper, we propose a cooperative learning algorithm for propagation and synchronization of network information among network nodes for online traffic classification. The results show that network nodes with sharing capability perform better with a higher average accuracy of around 6% on both Cambridge and UNIBS datasets compared to nodes without cooperative learning capability.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134067108","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":"QoS provisioning in CSMA/CA-based opportunistic random access for WLAN","authors":"Liew Jiun Terng, Fazirulhisyam bin Hashim","doi":"10.1109/MICC.2015.7725458","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725458","url":null,"abstract":"Toward the realization of Internet of Things (IoT), the rise in number of mobile terminal has been drastic and increasingly diverse. Carrying the purpose to complete task with great complexity and self-configuration ability based on different scenario, the access to the great pool of information has never been more important. In order to provide the seamless connection continuously, resource allocation method, mainly the widely adopted CSMA/CA MAC protocol must be revised. In this paper, we had shown that exploitation of node and temporal diversity can improve the system throughput and increase the reliability of data transmission. According to the data rate adaptation process, a lightweight algorithm will be used to adapt the contention window based on different scenario. Through simulation and analysis, we demonstrate the improvement of system throughput with proposed scheme in adaptive CSMA/CA with QoS provisioning over the conventional CSMA/CA.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129480488","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":"Optimum QoS resource allocation algorithm for video traffic over wireless mesh networks based on IEEE 802.11s","authors":"Abdul Nasser A. Moh, M. Borhanuddin","doi":"10.1109/MICC.2015.7725416","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725416","url":null,"abstract":"Wireless Mesh Network (WMN) is a communications network consists of radio nodes organized in a mesh topology. WMNs are gaining wide popularity due to their ability to integrate several networks in one network. It increases reliability and improved performance over conventional wireless LANs. Wi-Fi could be integrated in WMN. Several standards of IEEE 802.11 were created to support and deal with specific tasks of Wi-Fi. IEEE 802.11s has been created to support QoS in WMNs where it has been approved as a standard lately. However, it is still has some limitations in supporting QoS. In this paper we introduce our work which is built depends on previous works where all of them deal with TDMA/TDD and aims to enhance the QoS. We propose a scheduling mechanism which works in MAC layer in wireless mesh networking based on IEEE 802.11s. It gives the delayed video users the priority to serve them first while maintaining the QoS of audio and data users. This paper provides our results compared with previous works. We introduce them with a huge discussion, according to the QoS requirements.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133151955","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":"Case study of rain attenuation at 26 GHz in tropical region (Malaysia) for terrestrial link","authors":"Kesavan Ulaganathen, A. Tharek, R. Islam, K. Abdullah","doi":"10.1109/MICC.2015.7725443","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725443","url":null,"abstract":"Millimeter wave (mm Wave) is today's breakthrough frontier for emerging wireless mobile cellular networks, wireless local area networks, personal area networks, and vehicular communications. In the near future, mm Wave products, systems, theories, and devices will come together to deliver mobile data rates thousands of times faster than today's existing cellular and WiFi networks for an example from the era of 3G towards 5G mobile communication near future. However for Tropical countries the data link reliability is effected during rain. This paper presents studies on rain attenuation at 26 GHz, which is widely used for local multipoint distribution service deployment by using the measured and prediction methods for terrestrial microwave links point to point in tropical regions. In this paper, discussion and comparison of five different reduction factor models have been presented. The essence of reduction factor is either to reduce the point rain rate to the path averaged rain rate, or to reduce the actual path length filled with the uniform point rainfall. Several models have been proposed by researchers to account for the horizontal variation of rain fall. However of ITU-R model, revised Moupfouma model, revised Silva Mello model and Lin model mostly been used for rain attenuation predictions in tropical regions. The Abdulrahman model is newly introduced has been take into consideration in this studies. The objective of these studies to identify most suitable rain attenuation prediction model for the Malaysian tropical region by comparing with actual measurement data at higher operating frequencies, such as 26 GHz which falls under Ka Band category. This study will provide useful information for researchers by understanding and good considerations in rain attenuation predictions for a terrestrial link operating frequency at 26 GHz in a tropical region. At the end of the analysis, it was found the Lin models predicts closely with the measurement value at 26 GHz with little error compare to other models.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116245746","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":"Performance assessment of the simulation modeling approach of SWCNT at THz and GHz antenna applications","authors":"Y. N. Jurn, M. F. Malek, Wei‐Wen Liu, H. Rahim","doi":"10.1109/MICC.2015.7725442","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725442","url":null,"abstract":"This paper presents the performance evaluation for the simulation modeling approach of single-walled carbon nanotube (SWCNT) dipole antenna at THz and GHz frequency regimes. The equivalent nano-solid tube material (NSTM) modeling approach to the SWCNT is implemented into CST (MWS) software package. Where, the raw material of the NSTM model is derived from SWCNT material rather from other metal material. The comparison between NSTM modeling approach and related previous works is presented for the purpose of validation this model and investigate the behavior assessment of SWCNT dipole antenna. The results of this paper shows the good agreement between the NSTM dipole antenna and the SWCNT dipole antenna. This modeling approach will be utilized to estimate the SWCNT dipole antenna parameters, for instance, s11 parameters, radiation pattern and phase velocity. Finally, this modeling approach is presented to make possible to design and investigate different kinds of SWCNT antennas, which are significant in several area of applications.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134172324","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":"Density-aware directional forwarding strategy for vehicular ad hoc networks","authors":"Sabri M. Hanshi, Mohammad M. Kadhum, T. Wan","doi":"10.1109/MICC.2015.7725423","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725423","url":null,"abstract":"The characteristics of Vehicular Ad-Hoc Networks (VANETs) such as highly dynamic topology impose various challenges and constraints on routing protocols. These challenges should be managed effectively by the routing protocol. Geographic forwarding-based routing protocols are found to be effective in VANET, where geographic location information is utilized to select the next-hop for packet forwarding. Forwarding strategy is known as the core of such protocols to select the suitable forwarder among neighbouring nodes that can enhance the performance of routing strongly. Several research works have been developed to improve the forwarding strategy in VANET. However, some key issues such as utilizing the vehicle density to improve forwarding decision and reduce network congestion were not addressed. In this paper, an innovative forwarding strategy, called Density-aware Directional (DAD), with a joint consideration of vehicle density factor and directional forwarding is proposed for next-hop selection. It is aimed to manage the number of candidate next-hops as function of density and reduce routing loop by involving a directional angle. The proposed forwarding strategy was analyzed numerically to verify that it achieves the target properties.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133259674","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":"Optimization of FDL buffers and cost function for contention resolution in OCDM/WDM","authors":"Omar Najah, K. Seman, K. Abdulrahim","doi":"10.1109/MICC.2015.7725426","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725426","url":null,"abstract":"The key issue of network performance in photonic packet switches is a Packet contention. A proper contention scheme must be used to avoid early packet switching congested. In the Optical Packet Switching Architecture using Fiber Delay Line (FDL) has been used with Optical Code Division Multiplexing and Wavelength Division Multiplexing (OCDM/WDM) techniques to solve the contention resolution, the packet delay becomes an important issue that needs to be reduced, as well as node cost. In this paper, we optimized the number of FDLs needed to be used in switching node where the total cost associated to the employment of FDLs is minimized subject to performance requirements. The optimal number of buffers is determined by simulation experiments. The result shows that 64 shared Feed-Back buffers and 64 shared Feed-Forward buffers are the optimum buffers for the hybrid OCDM/WDM technique.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125697668","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":"Maximized secrecy rate based power allocation for wireless cooperative network with control jamming","authors":"K. Gurrala, Susmita Das","doi":"10.1109/MICC.2015.7725447","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725447","url":null,"abstract":"In this paper, we propose efficient power allocation techniques using both convex optimization (using Lagrange multiplier method) and a soft evolutionary approach (using Differential Evolution (DE) algorithm) to optimize both the relay and jammer powers in addition to an increase in the system performance in terms of secrecy rate. Here, we consider a cooperative wireless network with control jamming comprising of a source-destination pair with a set of relay nodes in the presence of single and multiple eavesdroppers. Optimal relay node is selected based on the SNR received at each relay, which transmits the data to the destination using decode and forward strategy. Amongst the remaining nodes, selection of jammer is done based on the SNR value of the relay to eavesdropper link. The proposed power allocation schemes are compared with equal power allocation policy for using the Monte-Carlo simulation study and these schemes are found to be superior in terms of average secrecy rate.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123681134","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":"Dual band inverted h-shaped slot monopole antenna for WLAN applications","authors":"S. S. Ismail, S. Rahim, A. Ibrahim, M. Sabran, H. Mohamad","doi":"10.1109/MICC.2015.7725433","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725433","url":null,"abstract":"A novel dual-band inverted H-shaped slot circular patch antenna is presented in this paper. A rectangular slots are initially introduced onto a circular patch antenna resulted to dual band antenna but with poor s-parameter at 5.2 GHz band. Subsequently, the antenna reflection coefficient at 5.2 GHz is improved by introducing an inverted H-shaped slot at the center of the circular patch. The antenna reflection coefficient at 2.4 GHz is improved by optimizing the circular patch diameter with value of 36 mm. Wide bandwidth and omnidirectional radiation pattern characteristics is realized by implementing partial ground plane. The proposed design exhibited return loss of -23 dB in simulation, -34 dB in measurement while -15 dB in simulation, -24 dB in measurement at 2.4 and 5.2 GHz, respectively. Hence, the proposed dual band antenna design operating at 2.4 and 5.2 GHz band frequencies can be used for wireless LAN (WLAN) applications.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123845958","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}