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2007 International Symposium on Intelligent Signal Processing and Communication Systems最新文献

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A novel two-dimension simplified subcarrier allocation with fairness for multiuser MIMO-OFDM transmission 一种新的多用户MIMO-OFDM传输的二维简化子载波公平分配方法
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445845
Lei Guo, Guangxi Zhu, Jian Liu
{"title":"A novel two-dimension simplified subcarrier allocation with fairness for multiuser MIMO-OFDM transmission","authors":"Lei Guo, Guangxi Zhu, Jian Liu","doi":"10.1109/ISPACS.2007.4445845","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445845","url":null,"abstract":"In this paper, a real-time subcarrier allocation algorithm with fair consideration is proposed based on simplification at both antenna dimension and frequency dimension. By knowing the channel characteristic of all users, our goal is to assign subcarriers to each user fairly and reduce computational complexity with requirement of minimizing the overall transmit power subject to the proportional rate constraints. Simulation results show that our proposed algorithm presents fairness in subcarrier allocation and outperform none antenna-dimension employed multiuser MIMO-OFDM transmission with significant computational complexity reduction.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123446482","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 novel image de-noising algorithm combined PCNN with morphology 一种将PCNN与形态学相结合的图像去噪算法
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445860
Zhang Hong-juan, Zhang Zong-nian, Lin Dong-mei, Ma Yi-de
{"title":"A novel image de-noising algorithm combined PCNN with morphology","authors":"Zhang Hong-juan, Zhang Zong-nian, Lin Dong-mei, Ma Yi-de","doi":"10.1109/ISPACS.2007.4445860","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445860","url":null,"abstract":"After summarizing the characteristics of pulse noise, a novel de-noising algorithm combined pulse coupled neural network (PCNN) with mathematical morphology was proposed in this paper. Firstly, noisy points were located using the synchronous pulse burst property of PCNN, then, were processed using the morphological open-close filtering. Finally our algorithm was compared with median filtering, morphological open-close filtering and the algorithm combined PCNN with median filtering. The experimental results showed that the proposed algorithm performed well, which was at a cost of much more calculating time than median filtering and morphological filtering, and cost far less than the algorithm combined PCNN with median filtering.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"16 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120809015","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: 13
A simple design of M-channel FIR wavelet-like filter bank m通道FIR类小波滤波器组的简单设计
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445927
X.J. Ma, X.M. Xie, G. Shi, A. Fernández-Vázquez
{"title":"A simple design of M-channel FIR wavelet-like filter bank","authors":"X.J. Ma, X.M. Xie, G. Shi, A. Fernández-Vázquez","doi":"10.1109/ISPACS.2007.4445927","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445927","url":null,"abstract":"In this paper, we propose a simple method for designing M-channel FIR wavelet-like filter banks. Unlike the conventional design of wavelet filter banks, our approach is based on near-perfect-reconstruction (NPR) filter banks, justifying the name \"wavelet-like.\" The major contribution of this paper lies in the technique to impose regularity constraints individually into each filter of the NPR filter bank, yielding more free parameters to design wavelet-like filter banks. Moreover, our method involves no optimization procedure by imposing regularity constraints. The designed 1-regular wavelet-like filter bank possesses good properties as the original NPR filter bank. The 2-regular wavelet-like filter bank can also be obtained preserving the NPR property. Examples are given to numerically illustrate the proposed technique.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124893638","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
Differential space-time modulation based on quasi-orthogonal codes 基于准正交码的差分空时调制
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445938
Defu Sun, Youxi Tang, S. Shao, Shaoqian Li
{"title":"Differential space-time modulation based on quasi-orthogonal codes","authors":"Defu Sun, Youxi Tang, S. Shao, Shaoqian Li","doi":"10.1109/ISPACS.2007.4445938","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445938","url":null,"abstract":"This paper proposes a low complexity differential modulation scheme for multiple-antenna systems where neither the transmitter nor the receiver knows channel knowledge. Our scheme is based on quasi-orthogonal codes. We consider a wireless system with four transmit antennas. At the transmitter, symbol pairs are jointly mapped to construct quasi- orthogonal codes and the codes are used to perform differential encoding. At the receiver, a simple pair-wise decoder is derived to demodulate symbol pairs. We compare the bit error rate (BER) performance and computational complexity of our scheme with that of other differential detection schemes. Comparison results show that the proposed scheme has good performance and low decoding complexity.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129491952","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
Novel optical flow optimization using pulse-coupled neural network and smallest univalue segment assimilating nucleus 基于脉冲耦合神经网络和最小单值段同化核的新型光流优化
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445874
Yanpeng Cao, A. Renfrew, Paul Cook
{"title":"Novel optical flow optimization using pulse-coupled neural network and smallest univalue segment assimilating nucleus","authors":"Yanpeng Cao, A. Renfrew, Paul Cook","doi":"10.1109/ISPACS.2007.4445874","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445874","url":null,"abstract":"Optical flow, with abundant local motion information, has been widely investigated in the last few decades. To improve the robustness and accuracy of optical flow estimation, we proposed a systematic optimization algorithm based on the pulse-coupled neural network (PCNN) and the smallest univalue segment assimilating nucleus (SUSAN). The primary aim of the proposed algorithm is to overcome the problems incurred by the noise disturbance and texture insufficiency. Specifically, our method performs a homogeneous area extraction based on texture variation using a nonlinear filter, smallest univalue segment assimilating nucleus. Then a novel 3-D pulse- coupled neural network model is constructed to perform optical flow optimization. Because of the excellent clustering capability of the PCNN, the proposed algorithm significantly improves the quality of optical flow estimation in the presence of noise. The enhanced optical flow field and extraction results are combined to solve the problem of insufficient texture. The proposed algorithm is evaluated in both synthetic and real testing images to demonstrate its excellent performance.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129716580","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: 4
Velocity based adaptive zone routing protocol 基于速度的自适应区域路由协议
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445892
Jieying Zhou, Yuliang Cheng, J. Lu
{"title":"Velocity based adaptive zone routing protocol","authors":"Jieying Zhou, Yuliang Cheng, J. Lu","doi":"10.1109/ISPACS.2007.4445892","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445892","url":null,"abstract":"To gain a more stable and better routing performance of ZRP in Ad hoc scenarios where mobile nodes move with non-uniform mobility, a velocity based adaptive zone routing protocol (VBAZRP) is proposed which allows different nodes choose different zone radius according to each node's distinct mobility. VBAZRP modifies the protocols of ZRP, and presents a new IARP named VBA-IA which uses asymmetric request and reply mechanism and symmetric mutual update mechanism to maintain node's routing zone proactively and a new BRP named VBA -B which can forward routing query efficiently outside zones by using relationship of nodes. Simulation results show that VBAZRP can adapt well to the more complicated and practical ad hoc applications.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128614377","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: 14
On-chip RLC interconnections effects on high speed transceivers 片上RLC互连对高速收发器的影响
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445918
C. M. Albina, G. Hackl
{"title":"On-chip RLC interconnections effects on high speed transceivers","authors":"C. M. Albina, G. Hackl","doi":"10.1109/ISPACS.2007.4445918","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445918","url":null,"abstract":"The rapid growth of microelectronics constantly presents new challenges to the IC designer. The physical and dynamic characteristics of wires on a die begin to dictate the topology of an integrated circuit. Second- and third-order effects are becoming important in designs built on processes smaller than 400 nm. In this paper we try to present the influence of the parasitic layout elements by showing the difference between RC and RLC parasitic extraction and simulation and their effects on the performance of a limiting amplifier used in the optic fiber transceivers. The evaluation was done using a standard 150 nm technology.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132456569","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
Graph representations of BCH codes in frequency domain 频域BCH码的图形表示
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445809
H.S. Wang, G. Zeng
{"title":"Graph representations of BCH codes in frequency domain","authors":"H.S. Wang, G. Zeng","doi":"10.1109/ISPACS.2007.4445809","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445809","url":null,"abstract":"A trellis and a Wiberg-like graph for a Bose-Chaudhuri-Hochquenghem (BCH) code in frequency domain are proposed and thus the concept of codes defined on graphs is extended from time domain to frequency domain. And a decoding algorithm on trellis in frequency domain is presented by introducing a concept of syndrome trellis. Finally, Comparisons of graph representations of BCH codes in time domain and frequency domain are also discussed.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132160696","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
Frequencies estimation of two-dimensional harmonics based on quaternion model 基于四元数模型的二维谐波频率估计
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445997
Huijing Dou, Shuxun Wang, Fei Wang
{"title":"Frequencies estimation of two-dimensional harmonics based on quaternion model","authors":"Huijing Dou, Shuxun Wang, Fei Wang","doi":"10.1109/ISPACS.2007.4445997","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445997","url":null,"abstract":"For quaternion model of two-dimensional harmonics, the singular values decomposition (SVD) method of quaternion matrix presented to estimate frequency pairs of two- dimensional harmonics. This method may estimate the number of signals by singular values. The left and right singular vectors of quaternion matrix were used to estimate frequency pairs. This method needs lesser data and data matrix is very simple. Simulations show that this method can decrease computation burden effectively than other methods.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"12 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126797925","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
Coupled mode characteristics for the twin coupled microdisks 双耦合微盘的耦合模式特性
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4446017
Jun-Jie Li, Jiaxian Wang, Yongzhen Huang
{"title":"Coupled mode characteristics for the twin coupled microdisks","authors":"Jun-Jie Li, Jiaxian Wang, Yongzhen Huang","doi":"10.1109/ISPACS.2007.4446017","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4446017","url":null,"abstract":"The characteristics for the twin coupled microdisks are investigated by finite-difference time-domain (FDTD) technique. In the twin coupled microdisks, mode coupling between the same order whispering-gallery modes (WGMs) results in coupled WGMs with split mode wavelengths and different quality factor (Q-factor). The numerical results show that the coupling between the first and the second order WGMs exists, which can greatly decrease the quality factor of the coupled first order WGMs and deduce the anti- crossing of the mode wavelength. Furthermore, we can see the coupling phenomenon from the field distribution varies with the gap.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"32 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123803438","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
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