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

{"title":"Impact of node inter-domain movement on MANETs performance","authors":"R. A. Raja Mahmood, M. Hussin, N. Manshor, A. I. Khan","doi":"10.1109/MICC.2015.7725417","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725417","url":null,"abstract":"Packet delivery ratio (PDR) percentage is one of the important network performance indicators in MANETs. In general, the PDR value degrades as speed of the node increases and coupled with high mobility or constant movement. As more nodes move at high speed, more broken path or link breakage occur and thus, more packets will be dropped. Interestingly, PDR rate has also been used to detect packet drop or black hole attack in the network. Thus, the packet drop activity may due to either the broken path process itself or deliberate drop by malicious nodes. Validating the packet drop action itself is imperative in reducing the false positive rate during the attack detection. This paper studies the movements of nodes in the networks that have caused high packet drop percentage. In particular, we investigate the inter-domain movement since it has substantial effect on the packet drop percentage. To the best of our knowledge, this is the first work that studies such relationship. The results on the overall network show that the high number of inter-domain movement may not necessarily contribute significantly to the packet drop percentage. However, when focus is on the inter-domain movement of the critical nodes, we yield consistent results. The proposed monitoring approach is also energy efficient as it reduces the need to monitor other large number of nodes insignificant movements.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"160 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":"122091754","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":"Single and sub-array characteristics of capacitive integrated reflectarray design for beam scanning reconfigurability","authors":"M. Ramli, N. Misran, M. F. Mansor, M. Islam","doi":"10.1109/MICC.2015.7725413","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725413","url":null,"abstract":"A reconfigurable reflectarray single element and 2×2 sub-array with a single varactor embedded inter-patch are presented. A phase diagram of both configurations and the relation to a radiation pattern is analyzed. Simulated radiation patterns from three designs namely CCSR, CRP and CRG with single element phase characteristics as a reference are reported to demonstrate reconfigurability of elements for beam scanning at Ku-band. The quasi pattern and value of single and 2×2 sub-array will provide guideline and indicator on how to get promising beam scanning result for full reflectarray fabrication and measurement. The radiation pattern of 9×3 array by three different elements with 35° scanning angle at Ku-band is compared and has confirmed the important of single and sub-array characteristics in array realization.","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":"114869973","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 weighted hard combination scheme for cooperative spectrum sensing in cognitive radio sensor networks","authors":"I. Mustapha, B. Ali, M. Rasid, A. Sali, H. Mohamad","doi":"10.1109/MICC.2015.7725399","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725399","url":null,"abstract":"Multi-user spatial sensing diversity exploration through cooperation spectrum sensing greatly improves sensing performance. However, high communication overhead and energy costs for exchanging sensing results may limit its viability in a realistic large scale resource constraint network such as cognitive radio wireless sensor networks. This paper presents a Weighted Hard Combination (WHC) scheme that combines features of both quantized and hard combining schemes to minimize energy cost for reporting sensing result and improve primary user detection performance in cooperative sensing. We evaluate the effectiveness of the scheme through simulation. Performance comparison of the WHC scheme in terms of detection performance, reporting energy cost and reporting time ratio with conventional hard combination, soft combination and quantized schemes indicates viability of the scheme. The results indicate that the WHC scheme minimizes reporting energy cost by 70% and improves detection performance by 5.6% compared to the quantized 3-bits scheme.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"6 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":"121834675","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 performance analysis of non-slotted and slotted optical burst switched networks","authors":"Yahaya Coulibaly, Muhammad Shafie Abd Latiff, Abubakar Muhammad Umaru, N. M. Garcia","doi":"10.1109/MICC.2015.7725425","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725425","url":null,"abstract":"The need for large-bandwidth networks is in continuous growth. Such demands are attributed to the user desire to have everything on-line. To support needs, all-optical networks, with their large bandwidth lend themselves considerable attention from both industry and academia. As a result, some optical switching paradigms have been proposed such as optical circuit switching, optical packet switching and optical burst switching. Among these paradigms, Optical Burst Switching (OBS) is seen as a viable solution. However, lack of mature optical memory makes burst loss ratio in OBS critical which needs to be solved before OBS can really be used in telecommunication networks. Many solutions have been proposed and evaluated to address this issue. These solutions can be categorised into two categories: architectural solutions and procedural solutions. Architectural solutions deal with the architectural design of OBS and these solutions are further classified into two classes: non-slotted and slotted OBS. Procedural solutions deal with the improvement of the operation of OBS networks in terms of burst assembly, routing, switching, scheduling, signalling, etc. In this paper, we focus on architectural solutions where we investigate QoS performance of non-slotted and slotted OBS in terms of burst loss ratio and throughput. Simulation results show that slotted outperforms non-slotted OBS; the results also demonstrate that higher priority bursts outperforms lower priority ones.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"143 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":"129026086","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":"Efficient and low-complexity scheduling algorithm in a multi-user heterogeneous traffic scenario","authors":"Olalekan Bello, H. Zen, A. Othman, Khairuddin Abd Hamid","doi":"10.1109/MICC.2015.7725434","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725434","url":null,"abstract":"In this paper, we propose a utility-based scheduling framework to maximize and improve the users' quality-of-service (QoS) satisfaction in broadband wireless access system. The scheduling framework comprises of three novel radio resource allocation (RRA) techniques; delay-based scheduling policy for real-time (RT) services using a sigmoid-like utility function, minimum-rate-based scheduling policy for non-real-time (NRT) services which obeys the law of diminishing marginal utility and a throughput-based scheduling policy for best-effort (BE), also based on the law of diminishing marginal utility but without a minimum rate requirement. The proposed algorithm, called maximum QoS satisfaction (MQS), is efficient and of low complexity as it specifies only a single parameter for different class of services. To prove its efficiency, we compare it with the delay-based satisfaction maximization and throughput-based satisfaction maximization (DSM/TSM), which exhibits similar characteristics in terms of resource allocation objectives. System-level simulation results demonstrate that the MQS achieves superior user call satisfaction performances in a multi-user heterogeneous traffic scenario.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"95 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":"114205680","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":"UHF RFID split-ring resonator tag antenna inductively coupled feed for metallic object","authors":"F. Erman, A. Ismail, Raja Syamsul Azmir Raja Abudullah, A. Alhawari, A. Shabaneh","doi":"10.1109/MICC.2015.7725410","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725410","url":null,"abstract":"In this paper, a split-ring resonator and an inductively coupled feed technique are designed to improve the RFID tag antennas performance. The presented tag antenna consists of two symmetrical C-shaped resonators with strip line in order to feed the radiating split-ring resonator structures by implementing an inductively coupled feed approach placed on the upper surface of Polytetrafluoroethylene substrate. By selecting a proper length and width of spilt-ring resonator structures, along with desirable coupling distance between two symmetrical C-shaped resonators and spilt-ring resonator structures, the input impedance of tag antenna can be obtained, which leads to attain an excellent conjugate match between antenna and IC chip. The proposed feeding technique and spilt-ring resonator structures offer a better performance of RFID tag among antenna size, reflection coefficient, and gain. The gain of the designed tag antenna is -2.272 dB at its operating frequency (916 MHz), the tag antenna is mounted on a square perfect electrical conductor of 200 mm side length, while the thickness of PEC is 1 mm. The simulation results were verified by the presented method via enhancing the performance of tag antennas for metallic object.","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":"132396178","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":"Mitigation technique for rain fade using frequency diversity method","authors":"Kesavan Ulaganathen, T. Rahman, M. R. Islam, N. A. Malek","doi":"10.1109/MICC.2015.7725412","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725412","url":null,"abstract":"The radio waves propagating through the earth atmosphere is attenuated due to the presence of atmosphere particles, such as water vapor, water drops and the ice particles. The atmospheric gases and rain both absorb and scatter the radio waves, and consequently degrade the performance of the microwave link. Millimeter wave (mmWave) 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, mmWave 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 3 G towards 5 G mobile communication near future. However for Tropical countries the data link realibility is effected during rain. Rain is a major source of attenuation for microwave propagation above 7 GHz [1], In tropical and equatorial regions, the rain intensity is higher and designing terrestrial and earth-to-satellite microwave links are very critical and challenging for high frequencies. This paper presents the summary of rain effects studies for lower operating frequency such as C band compare to higher operating frequency such as Ka band in tropical environment The main objective is to justify the literature findings on the effect of rain at lower and higher operating frequency in microwave link and solution to overcome it by implementing Switching Circuit as Fade Mitigation Technique (FMT). An experimental test bed has been set up for 5.8 GHz and 26 GHz terrestrial point to point data communication link. The received signal strength (RSS) data and rain fall intensity data were recorded for 24 hours daily over period of 12 months (Jan 2013-Dec 2013) at 1 minute interval. The collected rain rate data has been analyzed with some prediction models. The main outcome of the research shows that there is negligible effect of rain for 5.8 GHz link whereas it very strong on the 26 GHz link. It was observed 15 dB to 35 dB attenuation during measurement period. The FMT used in this research for dual frequency by shifting the operating frequency to lower band (5.8 GHz) while heavy rain and shifting back to normal position at higher operating frequency (26 GHz) using the threshold level as reference seems to be one of the solution in future. This findings will be useful resources of information for researchers or telecommunication engineers.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"22 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":"133081120","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 evaluation of cross-layer opportunistic MAC/routing with node's mobility for wireless body area networks","authors":"A. Awang, U. F. Abbasi","doi":"10.1109/MICC.2015.7725402","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725402","url":null,"abstract":"Wireless Body Area Networks (WBANs) offer many new promising applications in the area of remote health monitoring. In WBANs, sensor nodes deployed on a human body often exhibit high mobility patterns due to body posture movement. In a prior work, a Cross-layer Opportunistic MAC/Routing (COMR) protocol has been proposed for multi-hop WBAN but the evaluation was made using a static network topology. As an extension, in this work the performance of COMR protocol is investigated taking into account node's mobility with different speeds depending on body positions. The impacts of varying payload sizes are evaluated for both COMR and Simple Opportunistic Routing (SOR) protocols using a mobility model in two scenarios: standing and walking. Simulation results exhibit that COMR performs better than SOR in terms of reliability, network lifetime, end-to-end (ETE) delay and energy efficiency.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"34 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":"133463728","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 robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers","authors":"Dinaagaren Selvadurai, R. Sidek, P. Varahram, B. Ali","doi":"10.1109/MICC.2015.7725457","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725457","url":null,"abstract":"A new companding function is proposed for non-uniform indexation of a quadratically interpolated LUT predistorter used in digital predistortion under wideband signals. In digital predistortion, lookup table (LUT) predistorters are the most frequently used technique in order to compensate the non-linear effects of a power amplifier. In this paper, a new companding function of a quadratically interpolated LUT predistorter is designed in order to reduce the approximation errors of quadratic interpolation which causes the intermodulation (IMD) distortion. Simulation result shows that the proposed technique provides a better rejection of intermodulation distortion compared to quadratic interpolated LUT, linear interpolated LUT and conventional non-linear interpolated LUT predistorters respectively.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"4 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":"133498514","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 comparisons of sequential and asynchronous iterative water filling algorithm in cognitive smart grid communications","authors":"Yik-Kuan Hiew, N. Aripin, Norashidah Md Din","doi":"10.1109/MICC.2015.7725420","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725420","url":null,"abstract":"Cognitive radio based smart grid communication allows smart grid users to utilize spectrum bands opportunistically. Cognitive radio does not require spectrum leasing cost, saves users' energy consumption, keeps interference level low, and improves interoperability. In low traffic load environment, cognitive radio is able to support smart grid data transmission. However, the traffic load in Advanced Metering Infrastructure (AMI) can be as high as 1000 kbps or 500 kbps for backhaul. In this paper, the performance of cognitive radio in high traffic load AMI is investigated. Iterative Water Filling Algorithm (IWFA) is implemented upon cognitive radio to maximize the capacity of smart grid users through computing optimal transmit power for each user. The performances of sequential IWFA and asynchronous IWFA in smart grid communication are investigated. Simulation is conducted using Network Simulator 2. Simulation results show that IWFA indeed is able to maximize the capacity of smart grid users. Results also show that the asynchronous IWFA performs better than sequential IWFA. Asynchronous IWFA improves delivery ratio and throughput of cognitive radio based AMI communication by 5.95% and 8.67%, respectively.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"21 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120906888","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}