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7th International Multi Topic Conference, 2003. INMIC 2003.最新文献

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Modeling and controller design of twin rotor system/helicopter lab process developed at PIEAS 双旋翼系统/直升机实验室过程建模与控制器设计
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416742
K. Khan, N. Iqbal
{"title":"Modeling and controller design of twin rotor system/helicopter lab process developed at PIEAS","authors":"K. Khan, N. Iqbal","doi":"10.1109/INMIC.2003.1416742","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416742","url":null,"abstract":"This report presents the modeling and controller design for a twin rotor system (TRS). This is a two input two output nonlinear system, having strong cross coupling between the inputs and the outputs. The task is to control the angular position (the azimuth angle and the elevation angle) of the system. Nonlinear equations of azimuth and elevation angles are derived in state space using Euler-Lagrange equations. The model is then linearized and the controller is applied to control both the angular positions simultaneously. Rotor forces are calculated experimentally. A set of model parameters for the system is also provided at the end.","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125938169","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: 20
Design and performance of an OFDM-CPM receiver for wireless communications 无线通信OFDM-CPM接收机的设计与性能
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416663
M.A. Tasadduq, R. Rao
{"title":"Design and performance of an OFDM-CPM receiver for wireless communications","authors":"M.A. Tasadduq, R. Rao","doi":"10.1109/INMIC.2003.1416663","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416663","url":null,"abstract":"A new class of orthogonal frequency division multiplexing-continuous phase modulation (OFDM-CPM) signals has been introduced recently that outperforms conventional OFDM-PSK signals. These signals employ multi symbol observations for detection of data. An optimum OFDM-CPM receiver was designed that observed n symbols of the received waveform, and arrived at an optimum estimate of the data transmitted in the first symbol interval. However, from the viewpoint of receiver complexity, this receiver is quite complex and the complexity grows exponentially as a function of number of observation symbols. Thus, in this paper, we develop and investigate a less complex OFDM-CPM receiver that employs post-FFT signal processing for recovery of data. Performance of this receiver is evaluated over multipath fading channels for several subclasses of OFDM-CPM signals. It is shown that we achieve error rate performance that is far superior to the performance offered by conventional OFDM-PSK systems","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125560502","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: 3
Micro-GA based fuzzy logic controllers for co-ordinated FACTS control 基于微遗传算法的模糊逻辑协调控制
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416724
L. Khan, K. L. Lo, N. Ahmed
{"title":"Micro-GA based fuzzy logic controllers for co-ordinated FACTS control","authors":"L. Khan, K. L. Lo, N. Ahmed","doi":"10.1109/INMIC.2003.1416724","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416724","url":null,"abstract":"A systematic fuzzy logic based damping control system design for TCSC and UPFC is proposed to enhance the power system stability spectrum. Firstly, the fuzzy membership functions and control rules are extracted based on recorded or monitored signals. Then, a novel \"grandparenting\" technique is employed to incorporate the non-optimal fuzzy logic controllers in micro-GA (/spl mu/-GA) to search for optimal fuzzy membership functions and rules simultaneously. Simulation studies have been carried out to show the effectiveness and robustness of the proposed damping control strategy in a multi-machine power system setup.","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126726906","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: 8
Recognition of Arabic phonemes using fuzzy rule base system 基于模糊规则库系统的阿拉伯语音素识别
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416752
M. Awais, Habib-ur-Rehman
{"title":"Recognition of Arabic phonemes using fuzzy rule base system","authors":"M. Awais, Habib-ur-Rehman","doi":"10.1109/INMIC.2003.1416752","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416752","url":null,"abstract":"Speech is the most common and efficient mode of communication among humans. Speech recognition is one of the most complex pattern matching problems. The objective of speech recognition is to design a system that can recognize speech from multiple speakers with variability in speech rate, pitch, volume etc. and from a large vocabulary. The basic components of speech are phonemes and recognition of words of some language depends on the phonemes of individual letters constructing that word. This experiment is about the recognition of 28 basic phonemes of the Arabic language. The recognition system is a fuzzy based system. The input to the system is in the form of frequency intensity of the phonemes. Fuzzy rules are defined on the basis of different characteristics of the input. Phonemes are provided to the system and it recognizes them on the basis of their membership values under the defined fuzzy rule base. The experiments are performed on data from 180 speakers out of which 130 samples are used for training while the remaining 50 are used for testing.","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122167342","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: 6
Design of circularly polarized square microstrip patch antenna 圆极化方形微带贴片天线的设计
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416707
U. Farooq, J. Asad, H. Jamal
{"title":"Design of circularly polarized square microstrip patch antenna","authors":"U. Farooq, J. Asad, H. Jamal","doi":"10.1109/INMIC.2003.1416707","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416707","url":null,"abstract":"A simple design for a circularly polarized single-feed microstrip square patch antenna is presented. The design method consists of incorporating a narrow slot at the center of microstrip patch, producing a triangle over the slot and placing a single feed along the diagonal of the square patch. By adjusting the dimensions of the narrow slot and triangle, a circularly polarized wave can be generated. The bandwidth of the microstrip antenna can be changed by varying the angle of the triangle produced over the slot. The measured results are in good agreement with the numerical results.","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122190153","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: 2
A low complexity high resolution time-stepped stochastic ground combat simulation model 一种低复杂度、高分辨率时步随机地面作战仿真模型
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416776
A. Khalid, A. I. Bhatti, R. Hafiz
{"title":"A low complexity high resolution time-stepped stochastic ground combat simulation model","authors":"A. Khalid, A. I. Bhatti, R. Hafiz","doi":"10.1109/INMIC.2003.1416776","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416776","url":null,"abstract":"A Monte-Carlo simulation based discrete time discrete state model for ground level combat is presented. The paper elaborates the components, architecture and functional description of the battle space dynamics for a high-resolution constructive warfare simulation model. It takes into account the mobility of the heterogeneous combating entities, their non-constant fire power and the terrain effects for target identification and engagement by mapping these attributes on stochastic variables resulting in non-deterministic results unlike the class of low-resolution Lanchester-equations based aggregated combat models. The adaptable and expandable nature of this simulation model makes it ideal for evaluation of war strategies and training of troops. MATLAB modeling and OpenGL-based graphics have been implemented for verification and validation of the model.","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129919669","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
An expert system driven approach to generating natural language in Romanized Urdu from English documents 用专家系统驱动的方法从英语文档中生成自然语言罗马化乌尔都语
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416751
S. Khan, Z. Pervez, M. Mahmood, F. Mustafa, U. Hasan
{"title":"An expert system driven approach to generating natural language in Romanized Urdu from English documents","authors":"S. Khan, Z. Pervez, M. Mahmood, F. Mustafa, U. Hasan","doi":"10.1109/INMIC.2003.1416751","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416751","url":null,"abstract":"Machine translation of English text to its Urdu equivalent is a difficult challenge, and one that has not been tackled with much success to date. We present a direct approach, using an expert system, which successfully generates Romanized Urdu from English text. The expert system works with a knowledge base that contains grammatical patterns of English and Urdu, as well as a tense and gender-aware dictionary of Urdu words (with their English equivalents). The Romanized Urdu generated by this system is understandable by non-English speaking individuals who are familiar with the English alphabets. It is also suitable to be used as input in text-to-speech synthesizers for the benefits of individuals that are unable to read.","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131243024","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
Hardware implementation of shortened (48,38) Reed Solomon forward error correcting code 缩短(48,38)里德所罗门前向纠错码的硬件实现
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416621
M.A. Khan, S. Afzal, R. Manzoor
{"title":"Hardware implementation of shortened (48,38) Reed Solomon forward error correcting code","authors":"M.A. Khan, S. Afzal, R. Manzoor","doi":"10.1109/INMIC.2003.1416621","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416621","url":null,"abstract":"Transmitting information with accuracy is vital in any communication system. For this reason, forward error correction schemes are widely used to lower the error probability and hence increase the transmission accuracy. Reed Solomon is one of the most widely used forward error correcting block codes, and is capable of detecting and correcting multiple errors, particularly focusing on burst errors. This paper presents a shortened (48,38) Reed Solomon (RS) forward error-correcting code from a hardware implementation point of view. Detailed mathematical equations explaining the algorithm are also included in the paper. MATLAB, fixed point C and Verilog implementations of the algorithm have also been tested and verified, for a noisy channel as well","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133393808","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: 15
An improved, non-data aided symbol timing recovery for GMSK modulated signals 一种改进的GMSK调制信号的非数据辅助符号时序恢复
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416661
M. Azam, E. Akram, J. Ahmad, I. Shah
{"title":"An improved, non-data aided symbol timing recovery for GMSK modulated signals","authors":"M. Azam, E. Akram, J. Ahmad, I. Shah","doi":"10.1109/INMIC.2003.1416661","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416661","url":null,"abstract":"Symbol timing recovery is a process of recovering the optimal sampling time that corresponds to the maximum opening of the eye diagram. Most of the existing algorithms for the timing recovery of GMSK signals are either data aided or have large computational complexity. In this paper we present a low complexity, feedback and non-data aided timing recovery scheme for GMSK signals. This technique is based on the Gardner's timing error detector. Gardner's timing error detector was actually proposed for PSK signals with raised cosine pulse shapes but we show that it can be successfully applied on the CPM signals as well. The open loop statistical S-curve is computed to show the controlled and stable close loop performance","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133269917","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: 2
Potential issues in novel computational research: artificial immune systems 新型计算研究的潜在问题:人工免疫系统
7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416747
Anjum Iqbal, Mohd Aizaini
{"title":"Potential issues in novel computational research: artificial immune systems","authors":"Anjum Iqbal, Mohd Aizaini","doi":"10.1109/INMIC.2003.1416747","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416747","url":null,"abstract":"Recent trends in computational research show the significance of computation-based biological research, for example, bioinformatics and system biology, and biologically inspired computational research, which includes genetic algorithms, artificial neural networks, and evolutionary programming. Artificial immune systems (AIS) is a novel computing paradigm inspired from the human immune system (HIS). The dramatic features of HIS like distributability, uniqueness, adaptability, mobility, imperfect-detection, and anomaly-detection, have grabbed the attention of computational researchers for adopting HIS principles to design AIS that are robust, scalable, highly flexible, resilient to sub-versioning, and degrade gracefully. Designers of AIS make use of their creative abilities for designing computational systems by extracting corresponding metaphors from HIS. AIS is growing as a core paradigm for a wide application area including: intrusion detection, data analysis, pattern recognition, optimization, robotics, distributed control, and bioinformatics etc. The field of AIS, being in its infancy, bears enormous research potential. This work aims to throw light on some prospective research issues in the field. The effort is based on (1) latest research references and (2) our experience for pioneering AIS based research infrastructure in the Universiti Teknologi Malaysia (UTM). It may help new researchers to jump start AIS research and save their precious time.","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132650305","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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