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

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A 60 GHz single-walled carbon nanotube composite material for dipole antenna applications 用于偶极天线的60 GHz单壁碳纳米管复合材料
2015 IEEE 12th Malaysia International Conference on Communications (MICC) Pub Date : 2015-11-01 DOI: 10.1109/MICC.2015.7725456
Y. N. Jurn, M. F. Malek, Wei‐Wen Liu, H. Rahim
{"title":"A 60 GHz single-walled carbon nanotube composite material for dipole antenna applications","authors":"Y. N. Jurn, M. F. Malek, Wei‐Wen Liu, H. Rahim","doi":"10.1109/MICC.2015.7725456","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725456","url":null,"abstract":"This paper aim to present a good candidate material structure, in order to design dipole antenna at 60 GHz frequency. The single-walled carbon nanotube (SWCNT) is the basic material of this structure material. For the purpose of achieving this aim, the effective electromagnetic (EM) modeling approach for the single-walled carbon nanotube composite material (SWCNT-composite) is presented. The equivalent Bulk material (EBM) modeling approach is implemented for this purpose. Where, the SWCNT-composite material is consist of SWCNT coated by thin layer of graphite material. As well as, the required mathematical analysis is performed based on analysis of the electromagnetic properties of this material. The simulation model are performed using an available 3D electromagnetic simulation software package CST (MWS). The results of this paper shows the performance of the SWCNT-graphite dipole antenna at 60 GHz.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"35 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":"131111028","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
Empirical study on suitable scan duration for energy detection in clear channel assessment sensing method for IEEE802.15.4 transceiver IEEE802.15.4收发器清信道评估传感方法中能量检测合适扫描时间的实证研究
2015 IEEE 12th Malaysia International Conference on Communications (MICC) Pub Date : 2015-11-01 DOI: 10.1109/MICC.2015.7725408
Noraini Azmi, L. Kamarudin, A. Zakaria, A. Shakaff
{"title":"Empirical study on suitable scan duration for energy detection in clear channel assessment sensing method for IEEE802.15.4 transceiver","authors":"Noraini Azmi, L. Kamarudin, A. Zakaria, A. Shakaff","doi":"10.1109/MICC.2015.7725408","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725408","url":null,"abstract":"The ubiquitous increase in wireless technologies utilizing the 2.4 GHz frequency band leads to spectrum congestion that reduce Quality of Service (QoS) of wireless technologies especially IEEE802.15.4 Wireless Sensor Network (WSN) due to its low data rate and low transmission power characteristics. A number of research proposed channel separation by utilizing Energy Detection (ED) as a solution to overcome the interference issue. However, to the author's knowledge there is little information on scan duration set for ED that need to be pre-configured before any communication or transmission can be established. This paper present an empirical study conducted to identify suitable scan duration for ED. Experimental test in this study is conducted in two different conditions: 1) without interference and 2) with interference from IEEE802.11b WiFi Access Point (AP). After considering the tradeoff between accuracy and false detection, the outcome from this study suggests that n=3 is suitable scan duration (SD) to be configured for ED.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"73 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":"134013225","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
Investigation of pilot training effect in massive-MIMO TDD system 大规模mimo TDD系统飞行员培训效果研究
2015 IEEE 12th Malaysia International Conference on Communications (MICC) Pub Date : 2015-11-01 DOI: 10.1109/MICC.2015.7725439
M. H. Mazlan, Mehran Behjati, R. Nordin, M. Ismail
{"title":"Investigation of pilot training effect in massive-MIMO TDD system","authors":"M. H. Mazlan, Mehran Behjati, R. Nordin, M. Ismail","doi":"10.1109/MICC.2015.7725439","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725439","url":null,"abstract":"Massive-MIMO system is widely addressed by the literature as one of the main contributors for the next generation of the cellular network (5G). In the Massive-MIMO system the number of transmit antennas is much larger than the number of served users. Hence, it promises higher spectral efficiency by improving the rank of the overall channel matrix and localizing the interference. To mitigate interference (especially between adjacent sub-sectors), the accuracy of estimated channel is highly important. While, channel estimation in Massive-MIMO systems will cause the technical challenge of pilot contamination, due to the large number of antennas. In this regard, this paper addresses the effect of pilot training during channel estimation in downlink and uplink transmission of TDD Massive-MIMO system. The results present the performance of channel estimation in term of mean square error under different channel estimation techniques, various number of transmit antennas, and different length of pilot training. Moreover, results are compared under two different scenarios; without and with interference (pilot contamination). The results highlight the importance of pilot contamination avoidance in the Massive-MIMO system.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"14 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":"114351207","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: 7
Impact evaluation of noise uncertainty in spectrum sensing under middleton class a noise 米德尔顿a类噪声下频谱传感中噪声不确定性的影响评价
2015 IEEE 12th Malaysia International Conference on Communications (MICC) Pub Date : 2015-11-01 DOI: 10.1109/MICC.2015.7725403
E. Xu, F. Labeau
{"title":"Impact evaluation of noise uncertainty in spectrum sensing under middleton class a noise","authors":"E. Xu, F. Labeau","doi":"10.1109/MICC.2015.7725403","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725403","url":null,"abstract":"Reliable spectrum sensing is required to enable the effective use of Cognitive Radio (CR) networks. In practice, CRs not only have to cope with impulsive noises but also need to consider noise uncertainties. Small uncertainties of noise parameters are inevitable in any practical detector and the impact of these must be considered. This paper considers the energy detector based spectrum sensing under Middleton Class A noise with parameter uncertainties. Firstly, we show how analytical expressions of the probabilities of detection and false alarm can be derived. Secondly, we show that the mismatch of impulsive parameters A and Γ have little impact on performance and can thus generally be ignored but the uncertainty of noise power σZ2 can induce SNR Walls to the detector, which means that, no matter how many observations are obtained, the detector cannot robustly detect the primary signal. These results have implications for designing an enhanced energy detector for robust spectrum sensing.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"20 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":"130393414","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: 5
Design and analysis of double negative metamaterial for microwave s-band 微波s波段双负超材料的设计与分析
2015 IEEE 12th Malaysia International Conference on Communications (MICC) Pub Date : 1900-01-01 DOI: 10.1109/MICC.2015.7725454
M. I. Hossain, M. Faruque, M. Islam
{"title":"Design and analysis of double negative metamaterial for microwave s-band","authors":"M. I. Hossain, M. Faruque, M. Islam","doi":"10.1109/MICC.2015.7725454","DOIUrl":"https://doi.org/10.1109/MICC.2015.7725454","url":null,"abstract":"A new double negative metamaterial for S-band applications is presented in this paper. Unit-cell and one-dimensional planar array structure are analyzed. Two array configurations, 2 × 2 array and 4 × 4 array structures of proposed unit cell have been analyzed. The finite integration technique (FIT) based on (CST) Microwave Studio is used in this investigation. The designed unit-cell shows double negative values (both permittivity and permeability) in S band (2.95 GHz to 4.00 GHz). The array configurations shift resonance points of metamaterial structure slightly and hence lead to shift of negative value frequency ranges of effective parameters slightly.","PeriodicalId":225244,"journal":{"name":"2015 IEEE 12th Malaysia International Conference on Communications (MICC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127898204","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
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