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2008 4th IEEE International Conference on Circuits and Systems for Communications最新文献

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Application of Gabor Transform in a Novel Time Frequency Division Multiplex System Gabor变换在新型时频分复用系统中的应用
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.53
W. Hao, Shen Jie, Li Dao-ben
{"title":"Application of Gabor Transform in a Novel Time Frequency Division Multiplex System","authors":"W. Hao, Shen Jie, Li Dao-ben","doi":"10.1109/ICCSC.2008.53","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.53","url":null,"abstract":"In recent years, for the aim to improve the spectrum efficiency many proposals are putted forward such as multiple inputs and multiple outputs system. Orthogonal frequency division multiplexing system and high-order QAM modulation system. These systems must involve large multi-user and multi- carrier signal detection problems, and for the future wireless communication systems, this is a very important issue. This paper introduces a new, overlapped time-frequency division multiplex system. In this new system, the elimination mechanism for inter-symbol interference is unnecessary and only need to detect the symbol sequence code to distinguish the different original signal. Based on a gabor transform method, a rapid detection algorithm and decoding program is presented.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130870988","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 New Kind of RFID Reader Anti-Collision Algorithm 一种新的RFID读写器防碰撞算法
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.124
Leian Liu, Dashun Yan, X. Lai, Sheng-Li Lai
{"title":"A New Kind of RFID Reader Anti-Collision Algorithm","authors":"Leian Liu, Dashun Yan, X. Lai, Sheng-Li Lai","doi":"10.1109/ICCSC.2008.124","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.124","url":null,"abstract":"Reader collision problem is the most important problem in RFID reader network and which must be solved in order to make sure that RFID reader network works normally. Methods which are used to solve the reader collision problem are called as reader anti-collision algorithms. The goods and bads of the reader anti-collision algorithms play a vital role to the efficiency of the whole network system. In this paper, the reader collision problem is researched in detail and its different styles are summarized. On the basis of researching the existing algorithms, a new kind of reader anti-collision algorithm is proposed. By the simulation analysis, we can get the result that the proposed algorithm has better performance compared with others.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130908153","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
Transmission Distortion Analysis for H.264 Video over Wireless Networks 无线网络中H.264视频传输失真分析
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.107
Fan Li, Guizhong Liu
{"title":"Transmission Distortion Analysis for H.264 Video over Wireless Networks","authors":"Fan Li, Guizhong Liu","doi":"10.1109/ICCSC.2008.107","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.107","url":null,"abstract":"Transmission distortion is the degradation of the video presentation quality incurred by the transmission error. It is a considerably challenging task to transmission distortion analysis, because the wireless channel is time-varying and error-prone. More importantly, the transmission errors in one video frame may propagate further due to temporal coding. In this paper, we develop a sequence-segment-level (SS-level) transmission distortion model for H.264 video streams. Unlike previous schemes, which were all based on the tempo-spatial domain and needed full decoding of the compressed bit stream, we propose a compressed domain approach to transmission distortion modeling. The model estimates the transmission distortion by combining the video features directly extracted from the compression domain with the characteristics of the wireless channel. Since the approach does not require full-decompression of the video stream, the proposed model has very low computational complexity, which is well suited for the real-time application. Experimental results show the proposed model has high accuracy.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129234804","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
A 2.4GHz Power Amplifier Driver used in a WLAN IEEE 802.11b/g Transmitter Front-End 用于WLAN IEEE 802.11b/g发射机前端的2.4GHz功率放大器驱动器
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.19
Xuelian Zhang, Jun Yan, Yin Shi, F. F. Dai
{"title":"A 2.4GHz Power Amplifier Driver used in a WLAN IEEE 802.11b/g Transmitter Front-End","authors":"Xuelian Zhang, Jun Yan, Yin Shi, F. F. Dai","doi":"10.1109/ICCSC.2008.19","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.19","url":null,"abstract":"This paper presents a 2.4 GHz power amplifier driver used in a WLAN IEEE 802.11b/g transmitter front-end which employs a walking IF architecture. The power amplifier driver is implemented in a 50 GHz 0.5 mum SiGe BiCMOS technology. And it consists of a differential cascode amplifier stage, an emitter follower and a common-emitter amplifier. It dissipates 28 mA current under a 3.3 V power supply, and occupies 0.5x0.56 mm2 die areas. The power amplifier driver exhibits 12dB power gain and delivers -10 dBm power to an off-chip power amplifier with 50 Omega input impedance. It has good suppression of LO and image spurs, and its IIP3 is +10.2 dBm.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126613448","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
Adaptive Handoff Initiation Threshold Algorithm for Multi-Service Broadband Wireless Access System 多业务宽带无线接入系统的自适应切换起始阈值算法
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.38
Lian Jian, Z. Yongsheng, Duan Jun, Liu Yang, Hu Bo
{"title":"Adaptive Handoff Initiation Threshold Algorithm for Multi-Service Broadband Wireless Access System","authors":"Lian Jian, Z. Yongsheng, Duan Jun, Liu Yang, Hu Bo","doi":"10.1109/ICCSC.2008.38","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.38","url":null,"abstract":"It is well known that providing reasonable resource allocation schemes during the handoff execution phase can improve the handoff performance of broadband wireless access (BWA) system. In this paper, to improve the handoff performance from a different aspect and provide differentiated handoff QoS, we propose a handoff initiation threshold algorithm supporting multi-services. Our study indicates that the accuracy of the handoff initiation can be improved by integrating the information of the QoS demands of service, the change of the link quality and the speed of the MS as the handoff trigger. The analytical results show that the proposed algorithm can decrease the unnecessary handoff and control overhead during the handoff initiation phase, while the other aspects of the system performance are not deteriorated.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116081868","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
An Effective Ant-Colony Based Routing Algorithm for Mobile Ad-Hoc Network 移动Ad-Hoc网络中一种有效的蚁群路由算法
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.28
Yingzhuang Liu, Hong Zhang, Q. Ni, Zongyi Zhou, Guangxi Zhu
{"title":"An Effective Ant-Colony Based Routing Algorithm for Mobile Ad-Hoc Network","authors":"Yingzhuang Liu, Hong Zhang, Q. Ni, Zongyi Zhou, Guangxi Zhu","doi":"10.1109/ICCSC.2008.28","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.28","url":null,"abstract":"An effective Ant-Colony based routing algorithm for mobile ad-hoc network is proposed in this paper. In this routing scheme, each path is marked by path grade, which is calculated from the combination of multiple constrained QoS parameters such as the time delay, packet loss rate and bandwidth, etc. packet routing is decided by the path grade and the queue buffer length of the node. The advantage of this scheme is that it can effectively improve the packet delivery ratio and reduce the end-to-end delay. The simulation results show that our proposed algorithm can improve the packet delivery ratio by 9%-22% and the end-to-end delay can be reduced by 14%-16% as compared with the conventional QAODV and ARA routing schemes.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114298689","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: 16
The Waveform Distortion of UWB Pulse through Reflection from a Smooth Surface 超宽带脉冲在光滑表面反射后的波形畸变
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.120
Lu Ting, Zhang Qinyu, Meng Jing
{"title":"The Waveform Distortion of UWB Pulse through Reflection from a Smooth Surface","authors":"Lu Ting, Zhang Qinyu, Meng Jing","doi":"10.1109/ICCSC.2008.120","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.120","url":null,"abstract":"Pulse distortion is an important characteristic of ultra- wideband (UWB) pulse. Although lots of papers have addressed the pulse distortion issue, incorporating the impacts of frequency dependence on pulse distortion appears to be novel. A theoretical reflection model based on geometrical optics is established in this paper. The distortion of second derivative Gaussian pulse caused by reflection from various materials is investigated. These materials are very common in indoor environments. Fresnel reflection coefficient in frequency domain and inverse Fourier transform are used to obtain the time-domain pulse waveform. The simulation result shows that non-linear amplitude attenuation leads to the pulse distortion, and non-linear phase distortion has little impacts on pulse distortion. It is also found that the energy of reflected electromagnetic field is very small compared with the incident pulse. These numerical results can be directly applied in channel modeling and receiver design.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"304 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122473048","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
Design of a Data Recovery Block for Communications over Power Distribution Networks of Microprocessors 一种用于微处理器配电网络通信的数据恢复块设计
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.155
V. Chawla, R. Thirugnanam, D. Ha, T. M. Mak
{"title":"Design of a Data Recovery Block for Communications over Power Distribution Networks of Microprocessors","authors":"V. Chawla, R. Thirugnanam, D. Ha, T. M. Mak","doi":"10.1109/ICCSC.2008.155","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.155","url":null,"abstract":"We proposed the use of power distribution network (PDN) of a microprocessor for ubiquitous access of internal nodes for test/debug and showed the suitability of impulse ultra-wideband (UWB) communications for the purpose. This paper presents design of a data recovery block to recover data from UWB impulses superposed on a power line of a microprocessor. Considerations for data recovery block design based upon measured PDN characteristics have been discussed. The proposed circuit was implemented in TSMC 0.18 um CMOS process, and simulations show that it consumes 4.42 mW when operating from a 1.8 V supply and at a pulse repetition rate of 200 MHz.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"58 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116519826","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
An Improved Power Allocation Strategy with Partial Channel Knowledge for OSTBC 基于部分信道知识的改进OSTBC功率分配策略
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.49
Jin Libiao, Lin Jianzeng
{"title":"An Improved Power Allocation Strategy with Partial Channel Knowledge for OSTBC","authors":"Jin Libiao, Lin Jianzeng","doi":"10.1109/ICCSC.2008.49","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.49","url":null,"abstract":"An improved power allocation strategy for spatially correlated multiple- input multiple-output (MIMO) systems with parial channel knowledge was proposed in this paper . We design an optimal linear precoder for a space-time coded system assuming knowledge of only the transmit antenna fading correlations. The error-rate performance of a ( 2times2 ) OSTBC system was simulated with proposed power allocation strategy and different correlation coefficients. Compared with existing power allocation schemes based on preceding, the proposed scheme significantly improves the error-rate performance.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132121512","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
Architecture of Timing Synchronization for MIMO-OFDM WLAN Systems MIMO-OFDM无线局域网定时同步体系结构
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.51
Jongmin Cho, H. T. Anh, Jinsang Kim, W.-K. Cho
{"title":"Architecture of Timing Synchronization for MIMO-OFDM WLAN Systems","authors":"Jongmin Cho, H. T. Anh, Jinsang Kim, W.-K. Cho","doi":"10.1109/ICCSC.2008.51","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.51","url":null,"abstract":"In this paper, we present a timing synchronization scheme of the next generation IEEE 802.tin wireless LAN standard which is based on MIMO-OFDM technique. The proposed timing synchronization method takes two steps which consist of two modified auto-correlators. For coarse timing synchronization, a sliding window differentiator is used after a conventional auto-correlation in order to avoid plateau problem. The conjugate symmetry property of L-LTS is used for fine timing synchronization. Since cross-correlation based methods are not required, the computational complexity and the number of multiplier can be reduced. In order to reduce the hardware complexity, we have used sign comparators (SC) instead of using multipliers. Based on simulation results, the proposed method outperforms a conventional method. The proposed scheme can be applied to IEEE 802.1 In systems and can easily be expanded to frequency synchronization scheme.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124420439","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
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