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2012 IEEE Student Conference on Research and Development (SCOReD)最新文献

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Welcome message 欢迎信息
Pub Date : 2018-07-01 DOI: 10.1109/patmos.2018.8463991
M. K. Hamzah, M. Ismail, A. Aziz
On behalf of the Organizing Committee of IEEE SCOReD 2012 it gives me great pleasure in welcoming all delegates to Penang, Malaysia.
我很高兴代表IEEE score 2012组委会欢迎所有代表来到马来西亚槟城。
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引用次数: 0
Adjacent channel rejection analysis due to channel select filter in RF superheterodyne receiver of WLAN IEEE 802.11a 无线局域网IEEE 802.11a射频超外差接收机中信道选择滤波器的相邻信道抑制分析
Pub Date : 2012-12-05 DOI: 10.1109/SCORED.2012.6518627
N. Shairi, T. A. Rahman
In this paper, an analysis of adjacent channel rejection (ACR) due to channel select filter (CS filter) in RF superheterodyne receiver is presented. The ACR analysis is based on IEEE 802.11a standard at 5.8 GHz frequency band. In early stage of any RF receiver design for Wireless Local Area Network (WLAN) Orthogonal Frequency Division Multiplexing (OFDM) system, a system level analysis of ACR is needed prior to any CS filter design. This is important since the IEEE 802.11a uses adaptive data rates between 6 Mbps and 54 Mbps which gives different ACR level for CS filter. Hence, ACR analysis can determine out-of-band attenuation level of CS filter for RF superheterodyne receiver. This analysis is performed in a simulation software. As result, it shows that higher out-of-band attenuation level is required in CS filter for low data rate (e.g. 6 Mbps) compared to high data rate (e.g. 54 Mbps). Thus, the 30 dB attenuation level at adjacent channels in the CS filter is suggested for the RF superheterodyne receiver in order to meet ACR performance based on IEEE 802.11a standard.
本文分析了射频超外差接收机中信道选择滤波器(CS滤波器)对相邻信道抑制(ACR)的影响。ACR分析基于5.8 GHz频段的IEEE 802.11a标准。在无线局域网(WLAN)正交频分复用(OFDM)系统射频接收机设计的早期阶段,在设计任何CS滤波器之前,都需要对ACR进行系统级分析。这一点很重要,因为IEEE 802.11a使用6 Mbps和54 Mbps之间的自适应数据速率,这为CS滤波器提供了不同的ACR水平。因此,ACR分析可以确定射频超外差接收机CS滤波器的带外衰减水平。该分析是在仿真软件中进行的。结果表明,相比于高数据速率(例如54 Mbps),低数据速率(例如6 Mbps)的CS滤波器需要更高的带外衰减水平。因此,为了满足基于IEEE 802.11a标准的ACR性能,建议射频超外差接收机CS滤波器中相邻信道的衰减水平为30 dB。
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引用次数: 3
EEG based hearing threshold classification using fractal feature and neural network 基于脑电的分形特征和神经网络的听阈分类
Pub Date : 2012-12-01 DOI: 10.1109/SCORED.2012.6518607
M. Paulraj, S. Yaccob, A. Hamid, B. Adom, K. Subramaniam, C. Hema
In this paper, proposed a method to classify EEG time series signals recorded from left and right ears by presenting an acoustical stimulus in a time locked manner. Fractal dimensional features were extracted in order to measure the complexity of temporal dynamics and response onset of auditory evoked potentials of normal hearing and abnormal hearing persons. This study identified a significant potential difference between fractal dimensional values of the normal hearing and abnormal hearing person. The extracted fractal features were then associated to the hearing threshold perception and a neural network model for left and right ears were developed. The classification results in discriminating the left and right ear of normal and abnormal person was reported as 90% and 95% with specificity of 90%, sensitivity of 100%. Since the results were promising, it can be safely adopted in screening the hearing threshold level of a person in clinics.
本文提出了一种以时间锁定方式对左右耳记录的EEG时间序列信号进行分类的方法。提取分形维特征,以衡量听力正常和听力异常者听觉诱发电位的时间动态和反应起始的复杂性。本研究发现听力正常者与听力异常者分形维数值存在显著的电位差异。将提取的分形特征与听觉阈值感知相关联,建立了左右耳神经网络模型。该方法对正常人和正常人的左耳和右耳的分类结果分别为90%和95%,特异性为90%,敏感性为100%。由于结果是有希望的,它可以安全地用于筛选一个人的听力阈值水平在诊所。
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引用次数: 6
CMOS logarithmic current generator CMOS对数电流发生器
Pub Date : 2012-12-01 DOI: 10.1109/SCORED.2012.6518613
K. M. Al-Tamimi, M. Al-Absi
A new scheme for a controllable CMOS low-voltage and low-power current mode logarithmic function circuit is introduced. The proposed design provides wide normalized input range, controllable output amplitude, high accuracy and insensitive to temperature variation, while it simultaneously features the attractive characteristics of simplicity, operates under very low power supply (±0.5V), and consumes an ultra low power (0.3μW). The functionality of the proposed topology is confirmed using HSPICE with 0.35μm CMOS process.
介绍了一种可控CMOS低压低功耗电流型对数函数电路的新方案。该设计具有归一化输入范围宽、输出幅度可控、精度高、对温度变化不敏感等特点,同时具有结构简单、工作功率极低(±0.5V)、功耗极低(0.3μW)等特点。采用0.35μm CMOS工艺的HSPICE验证了所提出拓扑的功能。
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引用次数: 2
The effect of different ground characteristic to the stability and similarity of target spectra in FSR micro-sensor network 不同地特性对FSR微传感器网络中目标光谱稳定性和相似性的影响
Pub Date : 2012-12-01 DOI: 10.1109/SCORED.2012.6518643
N. E. Rashid, N. Ahmad, N. F. A. Nor, N. Ismail, A. A. Jamaludin
This paper investigates the effect of different ground characteristic to the stability and similarity of target spectra for ground based forward scattering radar (FSR) micro-sensor network. This research used simulation signals in to improve the performance of detection and classification of FSR micro-sensor network. Several parameters of carrier frequency and size of target were analyzed. In addition, the conditions of the ground considered in this research are concrete dry, average and wet ground. The simulation results are obtained by using Mathlab software. The obtained results show the stability and similarity of target spectra when the conductivity and permittivity of different ground exists. From the results, a database and estimation of system performance can be drawn as a guideline for future works.
研究了不同地面特性对地基前向散射雷达(FSR)微传感器网络目标光谱稳定性和相似性的影响。本研究利用仿真信号来提高FSR微传感器网络的检测和分类性能。对目标的载频和尺寸等参数进行了分析。此外,本研究考虑的地面条件有混凝土干地面、普通地面和湿地面。利用Mathlab软件得到了仿真结果。所得结果表明,当不同地面的电导率和介电常数存在时,目标光谱具有稳定性和相似性。根据研究结果,可以建立一个数据库并对系统性能进行评估,为今后的工作提供指导。
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引用次数: 6
Characterizing energy efficiency for heterogeneous cellular networks 异构蜂窝网络的能量效率表征
Pub Date : 2012-12-01 DOI: 10.1109/SCORED.2012.6518638
M. Nasimi, F. Hashim, C. K. Ng
Energy efficiency in wireless networks, especially heterogeneous networks (HetNets) have received a lot of attention due to energy crisis and environmental protection. This emerging trend has motivated the academic and industrial world for new research area, which leads to green networks. In this paper, we provide a brief overview on those studies with an emphasis on introducing some energy efficiency metrics in HetNets such as Energy Consumption Ratio (ECR) and Energy Saving (ES). Since these metrics provide quantified information to compare and assess the efficiency of consumed energy, understanding those metrics can yield insight into the potential energy saving in HetNets. Furthermore, the assessment of potential energy conservation of both energy efficiency metrics will be carried out in different deployment strategies such as macro-micro, macro-relay and micro-relay. The obtained numerical results show that the macro-relay deployment strategy is much energy efficient compared to macro-micro and micro-relay. Therefore, it is concluded that the energy efficiency metrics can be the key measurement for the energy consumption in HetNets.
由于能源危机和环境保护的原因,无线网络特别是异构网络(HetNets)的能源效率受到了广泛的关注。这一新兴趋势促使学术界和工业界寻找新的研究领域,从而产生了绿色网络。在本文中,我们简要概述了这些研究,重点介绍了HetNets中的一些能效指标,如能耗比(ECR)和节能(ES)。由于这些指标提供了量化信息来比较和评估消耗能源的效率,因此了解这些指标可以深入了解HetNets的潜在节能效果。在宏观-微观、宏观-中继和微观-中继等不同部署策略下,对两种能效指标的节能潜力进行评估。数值计算结果表明,与宏微继电器和微继电器相比,宏继电器部署策略具有更高的能量效率。因此,可以得出结论,能源效率指标可以成为HetNets能源消耗的关键衡量指标。
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引用次数: 18
Ultrasound velocity to measure beef, chicken and fish fillet fat content 超声波速度测量牛肉,鸡肉和鱼肉的脂肪含量
Pub Date : 2012-12-01 DOI: 10.1109/SCORED.2012.6518610
M. H. Abdul Halim, N. Buniyamin, M. A. Mohd Shari, R. Abu Kassim
The objective of this research is to develop a reliable non invasive method to measure fat content in beef and fish fillet using ultrasound A-Mode scan. The results of the fat measurement from this non invasive method were then compared to the results of fat measurement using a proven method. The Soxhlet method is a standard fat measurement procedure recommended by the Association of Official Analytical Chemist (AOAC). The samples used in this investigation are chicken, meat and fish fillets. The experimental results showed that there is correlation between fat content and the measured ultrasound velocity travelled in the sample. This indicates that fat measurement using the ultrasound A-Mode scan technique can be used to determine fat content in fillet with reasonable accuracy.
本研究的目的是开发一种可靠的无创方法,利用超声a型扫描来测量牛肉和鱼片中的脂肪含量。然后将这种非侵入性方法的脂肪测量结果与使用一种经过验证的方法的脂肪测量结果进行比较。索氏法是官方分析化学家协会(AOAC)推荐的标准脂肪测量方法。这次调查使用的样品是鸡肉、肉和鱼排。实验结果表明,脂肪含量与样品中测量的超声传播速度之间存在相关性。这说明利用超声a型扫描技术测量鱼片中的脂肪含量,具有一定的准确性。
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引用次数: 6
Renewable energy cost-benefit analysis under Malaysian feed-in-tariff 马来西亚上网电价下的可再生能源成本效益分析
Pub Date : 2012-12-01 DOI: 10.1109/SCORED.2012.6518631
A. S. Abdullah, M. Abdullah, M. Y. Hassan, F. Hussin
Penetration of renewable energy sources in Europe have increased significantly for the past 10 years, especially in Germany. One important factor contributing to this improvement is the introduction of Feed-in Tariff (FiT). Follow in the footsteps of Europe, Malaysia has also introduced the FiT in 2011 to attract more investment in power generation from renewable energy (RE). This paper will investigate the cost-benefit analysis of installing Building-Integrated Photo-Voltaic (BIPV) system under the current FiT design in Malaysia. The analysis is performed by using HOMER software.
过去10年,可再生能源在欧洲的渗透率显著提高,尤其是在德国。促成这种改善的一个重要因素是引入上网电价(FiT)。跟随欧洲的脚步,马来西亚也在2011年引入了FiT,以吸引更多的可再生能源发电投资。本文将调查在马来西亚当前FiT设计下安装建筑集成光伏(BIPV)系统的成本效益分析。采用HOMER软件进行分析。
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引用次数: 18
Memristor Spice model for designing analog circuit 用于设计模拟电路的忆阻器Spice模型
Pub Date : 2012-12-01 DOI: 10.1109/SCORED.2012.6518615
A. Adzmi, A. Nasrudin, W. Abdullah, S. H. Herman
Memristors are novel electronic devices, a device that can be used in many applications such as memory, logic, and neuromorphic systems. A computer model of the memristor would be a useful tool to analysis circuit behavior to help in develops application of this memristor as passive circuit element via simulation. In this paper, we incorporate a SPICE model of memristor for designing practical analog circuit for nonlinear dopant drift. SPICE model would be appropriate way to describe real device operation. Various window functions has been proposed in non linear ion drift memristor devices. In investigating and characterizing the physical electronic and behavioral properties of memristor devices, the circuit analysis of the proposed memristor models are then been studied. The simulation output should have a current-voltage hysteresis curve, which looks like bow tie. The loops map the switching behavior of the device. Then, we come out with a simple practical analog circuit which in this case we construct a simple integrator circuit and make comparison of these memristor implemented circuit design between different type of memristor models. The research verifies the proposed memristor model and the possibilities of implementing memristor model in practical analog circuit.
忆阻器是一种新型的电子器件,可用于许多应用领域,如记忆、逻辑和神经形态系统。建立忆阻器的计算机模型将是分析电路性能的有效工具,有助于通过仿真开发该忆阻器作为无源电路元件的应用。本文将忆阻器的SPICE模型引入到非线性掺杂漂移模拟电路的设计中。SPICE模型将是描述设备实际操作的合适方法。在非线性离子漂移忆阻器器件中提出了多种窗函数。在研究和表征忆阻器器件的物理、电子和行为特性时,对所提出的忆阻器模型进行了电路分析。仿真输出应该有一个电流-电压迟滞曲线,看起来像领结。环路映射了设备的开关行为。然后,我们给出了一个简单实用的模拟电路,在这种情况下,我们构建了一个简单的积分器电路,并对不同类型的忆阻器模型之间的忆阻器实现电路设计进行了比较。研究验证了所提出的忆阻器模型以及在实际模拟电路中实现忆阻器模型的可能性。
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引用次数: 11
Influence of four wave mixing on modulation format performance under 100 Gb/s data rate 100gb /s数据速率下四波混频对调制格式性能的影响
Pub Date : 2012-12-01 DOI: 10.1109/SCORED.2012.6518625
A. Haider Jabber, N. M. Din, M. Al-Mansoori, F. Abdullah, H. A. Fadhl, N. Salim, A. Saher
Four-wave mixing (FWM) is undesirable nonlinear effects that can degrade the optical transmission system. Under high data rate, i.e. 100 Gbps, and ultra-long haul distance, the effects of FWM can limit the system performance significantly. In this paper, we have analyzed and evaluated the system performance tolerance to FWM under the impact of effective area variation. The study was conducted in the presence of normal Non-Return-Zero (NRZ) and Return-Zero (RZ) intensity modulation. In addition, the tuning of effective area on FWM has been done with both types of modulation format. It is found that the RZ modulation introduces minimum FWM power up to -79.5dBm at 80μm2 effective area, while NRZ offers maximum FWM power less than -74 dBm at the same effective area. In the case of system performance with the effective area variation at 80μm2, the BER is 1.99×10-92 at received power of -5.809 dBm in normal RZ modulation. However, in the presence of NRZ modulation format the BER was found to be less than 8.49-10-21 at -10.77 dBm received powers. Overall, the result indicates that RZ modulation is the suitable choice for high speed transmission distance and optimum bit-error-rate.
四波混频是一种严重影响光传输系统性能的非线性效应。在高数据速率(即100 Gbps)和超长距离下,FWM的影响会显著限制系统性能。本文分析和评价了在有效面积变化影响下系统对FWM的性能容忍度。该研究是在正常的非归零(NRZ)和归零(RZ)强度调制的情况下进行的。此外,在两种调制格式下对FWM的有效面积进行了调谐。结果表明,在80μm2有效面积下,RZ调制产生的最小FWM功率可达-79.5dBm,而NRZ调制在相同有效面积下产生的最大FWM功率小于-74 dBm。在有效面积变化为80μm2的情况下,在接收功率为-5.809 dBm时,系统的误码率为1.99×10-92。在-10.77 dBm接收功率下,采用NRZ调制格式时,误码率小于8.49-10-21。综上所述,RZ调制是高速传输距离和最佳误码率的理想选择。
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引用次数: 3
期刊
2012 IEEE Student Conference on Research and Development (SCOReD)
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