2013 IEEE Student Conference on Research and Developement最新文献

Methods of lightning protection for the PV power plant 光伏电站防雷方法

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-16 DOI: 10.1109/SCORED.2013.7002575

P. Tan, C. K. Gan

引用次数: 9

Investigation of a joint channel estimation technique for PAPR reduction in OFDM systems 降低OFDM系统PAPR的联合信道估计技术研究

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002562

H. Mahdi, M. Ismail, R. Nordin

{"title":"Investigation of a joint channel estimation technique for PAPR reduction in OFDM systems","authors":"H. Mahdi, M. Ismail, R. Nordin","doi":"10.1109/SCORED.2013.7002562","DOIUrl":"https://doi.org/10.1109/SCORED.2013.7002562","url":null,"abstract":"The orthogonal frequency division multiplexing (OFDM) has attracted many researchers in the last decade due to the many advantages of this system. The intersymbol interference (ISI) free transmission and the high bit rate are two of the OFDM's advantages. Although, OFDM systems as the other communication systems, they need to estimate the channel state information to reduce the Bit Error Rate (BER), therefore, many estimation techniques have been developed such as the least squares error (LSE). However, these estimation methods involve insertion of pilot tones in the original OFDM signal, where this OFDM signal suffers from the effect of high peak powers when compared to the average power, which known as the peak to average power ratio (PAPR). Hence, a PAPR reduction technique should be employed to overcome the problem without affecting the pilot tones. In this paper, the joint performance of some PAPR-based reduction techniques and the comb-type-based channel estimation method has been proposed and evaluated. The simulation results show that the selected mapping (SLM), amplitude clipping, and the unitary matrix transformation (UMT) based PAPR reduction methods have different effects on the estimated channel, where the SLM did not affected by the pilot tones while the UMT will destroy the pilot tones as like the amplitude clipping, because the SLM did not change the pilot power while the UMT do that, so that, the UMT and clipping methods are not recommended without preprocessing if the OFDM designer needs good estimated channel state information.","PeriodicalId":144191,"journal":{"name":"2013 IEEE Student Conference on Research and Developement","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129436529","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

A compact rectangular patch ultra wideband antenna with WLAN band-rejection 一种紧凑的矩形贴片超宽带天线，具有WLAN带抑制功能

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002606

Y. E. Jalil, C. Chakrabarty, B. Kasi

引用次数: 3

Impact of load expansion to the renewable energy system performance 负荷扩容对可再生能源系统性能的影响

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002580

R. Mukhtaruddin, H. A. Rahman, M. Y. Hassan, J. J. Jamian

引用次数: 0

Electromyography signal analysis using spectrogram 用谱图分析肌电信号

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002599

T. Zawawi, A. Abdullah, E. Shair, I. Halim, O. Rawaida

{"title":"Electromyography signal analysis using spectrogram","authors":"T. Zawawi, A. Abdullah, E. Shair, I. Halim, O. Rawaida","doi":"10.1109/SCORED.2013.7002599","DOIUrl":"https://doi.org/10.1109/SCORED.2013.7002599","url":null,"abstract":"Electromyography (EMG) is known as complex bioelectricity signals that representing the contraction of the muscle in humanbody. The EMG signal offers useful information that can help to understand the human movement. Many techniques have been proposed by various researchers such as fast Fourier transforms (FFT). However, the technique only gives temporal information of the signal and does not suitable for EMG that consists of magnitude and frequency variation. In this paper, the analysis of EMG signal is presented using time-frequency distribution (TFD) which is spectrogram with different window size. Since the spectrogram represent the the EMG signal in time-frequency representation (TFR), it is very appropriate to analyze the signal. The EMG signals from Biceps muscle of two subjects are collected for body position of 0° and 90°. From the TFR, parameters of the signal such as instantaneous fundamental root mean square (RMS) voltage (Vrms) are estimated. To identify the suitable windows size, spectrogram with size window of 64, 256, 512 and 1024 is used to analyze the signal and the performance of the TFR are evaluated. The results show that spectrogram with window size of 512 gives optimal TFR of the EMG signals and suitable to characterize the signal.","PeriodicalId":144191,"journal":{"name":"2013 IEEE Student Conference on Research and Developement","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115888772","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: 18

A new proposed peak-to-average power reduction parameter to evaluate SLM and PTS as OFDM PAPR reduction schemes 提出了一种新的峰值-平均功率降低参数，用于评估SLM和PTS作为OFDM PAPR降低方案的性能

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002617

Haidar N. Al-Anbagi, K. Elleithy

引用次数: 0

Passive optical access network monitoring using L-band ASE source with fiber Bragg grating 利用l波段ASE源和光纤光栅进行无源光接入网监控

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002644

N. F. Naim, M. Ab-Rahman, A. Bakar

引用次数: 4

Rectangular circular and radial cavity resonator substrate integrated waveguide bandstop filters 矩形圆形和径向腔谐振器衬底集成波导带阻滤波器

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002605

M. N. Husain, G. S. Tan, K. S. Tan

引用次数: 2

Location estimation utilising WiMAX preamble detection under ITU-R channel models 在ITU-R信道模型下利用WiMAX前导检测的位置估计

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002559

A. A. M. Isa, M. Othman, M. M. Hud, M. S. Johal, M. Zin, M. Isa

引用次数: 1

FPGA implementation of RANSAC algorithm for real-time image geometry estimation FPGA实现RANSAC算法的实时图像几何估计

2013 IEEE Student Conference on Research and Developement Pub Date : 2013-12-01 DOI: 10.1109/SCORED.2013.7002592

J. Tang, N. Shaikh-Husin, U. U. Sheikh

引用次数: 9