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2007 3rd International Workshop on Signal Design and Its Applications in Communications最新文献

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A Criterion for Determining the Crosscorrelation of Binary Sequences from GMW Constructions 从GMW结构中确定二值序列相互关系的判据
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408411
Shenghua Li, L. Hu, Xiangyong Zeng
{"title":"A Criterion for Determining the Crosscorrelation of Binary Sequences from GMW Constructions","authors":"Shenghua Li, L. Hu, Xiangyong Zeng","doi":"10.1109/IWSDA.2007.4408411","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408411","url":null,"abstract":"A binary sequence from the GMW constructions is defined by a chain of power functions and trace functions. In this paper, for such a sequence, we present a criterion on the decimation such that the crosscorrelation between its decimation and its adjoint sequence is independent of all the powers. Since a binary GMW or cascaded GMW sequence is the same as its adjoint sequence, the crosscorrelation of the sequence and its decimations can be determined from known results on m-sequences by the criterion. Furthermore, we discuss the 3-valued and 4-valued correlation functions of cascaded GMW sequences.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130182776","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
An Improved PTA Method to Estimate the Residual Carrier Frequency Offset in Wireless OFDM Systems 一种估计无线OFDM系统剩余载波频偏的改进PTA方法
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408388
Guangliang Ren, Jiangtao Xing, Huining Zhang
{"title":"An Improved PTA Method to Estimate the Residual Carrier Frequency Offset in Wireless OFDM Systems","authors":"Guangliang Ren, Jiangtao Xing, Huining Zhang","doi":"10.1109/IWSDA.2007.4408388","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408388","url":null,"abstract":"An improved pilot tone aided (PTA) method to estimate the residual frequency offset (RCFO) is proposed for wireless orthogonal frequency division multiplexing (OFDM) systems. Based on the estimated SNRs of the subchannels, the cross-correlation data between adjacent OFDM symbols on the sub-channels with high quality transmissions are selected, and hard decided. The hard decisions and data on the pilot tones are used to estimate the residual frequency offset on the corresponding sub-channels respectively. Each of the estimated RCFOs is weighted by the SNR on the corresponding subchannel and combined to improve the RCFO estimation performance. The simulation results indicate that the proposed scheme achieves much better performance than the available PTA schemes.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132713104","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 Nonlinear Boolean Function with Good Algebraic Immunity 具有良好代数免疫的非线性布尔函数
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408417
J. Kim, Hong‐Yeop Song
{"title":"A Nonlinear Boolean Function with Good Algebraic Immunity","authors":"J. Kim, Hong‐Yeop Song","doi":"10.1109/IWSDA.2007.4408417","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408417","url":null,"abstract":"We describe the algebraic immunity and calculation of algebraic immunity of boolean functions. We propose a new balanced n-variable boolean function with high algebraic immunity. We check the nonlinearity of the new function for n < 20 and the algebraic immunity of the function in case of n < 18. We conjecture it has optimum algebraic immunity.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117079919","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
On a Convoluted-Time and Code Division Multiple Access Communication System Using Complete Complementary Codes 基于完全互补码的卷积时码分多址通信系统研究
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408384
T. Kojima, Masaki Aono
{"title":"On a Convoluted-Time and Code Division Multiple Access Communication System Using Complete Complementary Codes","authors":"T. Kojima, Masaki Aono","doi":"10.1109/IWSDA.2007.4408384","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408384","url":null,"abstract":"Signal design methods for the approximately synchronized CDMA systems based on complete complementary codes have been proposed. It has been shown that both the information transmission rate and the frequency usage rate can be increased by these kinds of CDMA systems. However, there are two big problems, that is, the small cell capacity and the large signal power. In this paper, we consider another communication system based on complete complementary codes, which is called the convoluted-time and code division multiple access (CT-CDMA) system. We give both the merits and the shortcomings of this method, and discuss the way to apply this system into some actual communication applications.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125053579","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
A new family of optimal zero correlation zone sequences from Perfect Sequences Based on Interleaved Technique 从基于交错技术的完美序列中得到一类新的最优零相关带序列
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408356
Zhengchun Zhou, Zhen Pan, Xiaohu Tang
{"title":"A new family of optimal zero correlation zone sequences from Perfect Sequences Based on Interleaved Technique","authors":"Zhengchun Zhou, Zhen Pan, Xiaohu Tang","doi":"10.1109/IWSDA.2007.4408356","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408356","url":null,"abstract":"In this paper, we present a new method for construction of zero correlation zone (ZCZ) sequence sets, which are optimal with respect to Tang, Fan, and Matsu-fuji bound. The method proposed is based on interleaved technique and a perfect sequence of length m(2k + 1) with m >2, k ges 0.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132972369","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
An Improved Genetic Algorithm for QOS Multicast Routing 一种改进的QOS组播路由遗传算法
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408342
Fang Yiming, Yu Jianjun, Fang Zhimin
{"title":"An Improved Genetic Algorithm for QOS Multicast Routing","authors":"Fang Yiming, Yu Jianjun, Fang Zhimin","doi":"10.1109/IWSDA.2007.4408342","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408342","url":null,"abstract":"Aiming at the problem of multicast routing with multiple QoS constraint, such as delay, bandwidth, losing rate, a new genetic algorithm is brought up based on the k-th shortest path in this paper. Our algorithm outputs an approximate Steiner tree satisfying all QoS constraint of multicast request in a network with e edges and v vertices, in time O(e+vlogv+kv). Under the genetic algorithm we proposed, a set of new methods in coding, crossover and mutation operation are also introduced which effectively improving the convergence of the genetic algorithm.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123175064","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
New Criteria and Related Techniques for 4G Wireless Systems 4G无线系统新标准及相关技术
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408383
Wei Chen
{"title":"New Criteria and Related Techniques for 4G Wireless Systems","authors":"Wei Chen","doi":"10.1109/IWSDA.2007.4408383","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408383","url":null,"abstract":"Summary form only given: 3G technologies have been widely deployed in Europe, Japan and other countries since 2000. But few 3G telecom operators could claim profitable from the current services provided by 3G networks. The real issues hit the 3G flying are spectrum efficiency, uplink bandwidth and overall cost with CDMA based technology. This presentation, based on SCDMA, TD-SCDMA, and McWill deploying experiences in the last ten years in China, proposes new criteria for 4G wireless communication systems. Under the proposed criteria, what are missing in current wireless communication theory is addressed. In order to increase the spectrum efficiency and uplink bandwidth in a 4G system, the presentation gives a way to optimally consider frequency, time, spatial, and coding domains issues altogether. Most importantly, the presentation points out new foundation based on multi-user information theory for wireless communications, which might be one of many means that can effectively increase spectrum utilization. Uplink bandwidth is a bottleneck for many wireless communication systems. Traditionally, in order to get higher bandwidth efficiency, a higher order or multi-level modulation (such as QAM 64) should be normally adopted, which requires high output power in subscriber terminal side. This talk shows an alternative way to handle high bit/symbol rate modulation without high multi-level output power.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116238288","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
Chaotic Time Series Gray Correlation Local Forecasting Method Based On Fractal Theory 基于分形理论的混沌时间序列灰色相关局部预测方法
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408403
Min Zhao, Yingfei Fan, Jing Lv
{"title":"Chaotic Time Series Gray Correlation Local Forecasting Method Based On Fractal Theory","authors":"Min Zhao, Yingfei Fan, Jing Lv","doi":"10.1109/IWSDA.2007.4408403","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408403","url":null,"abstract":"The fractal and the structure of self-similarity are two main features of chaotic behaviors. Based that an initial search for a self-similar trajectory, the series of gray correlation for local forecasting chaos time are proposed. The nearest neighbor points in a phase space are selected based on Euclidean distance and the degrees of gray correlation. The method proposed is applied to a short-term, power-load forecasting. The results of load forecasting using this approach indicate the method is efficient and accurate.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121013784","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
The Construction of ZCZ Arrays Set Based on Interleaved Technique 基于交错技术的ZCZ阵列集构造
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408354
Junping Gao, Qi Li, J. Dai
{"title":"The Construction of ZCZ Arrays Set Based on Interleaved Technique","authors":"Junping Gao, Qi Li, J. Dai","doi":"10.1109/IWSDA.2007.4408354","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408354","url":null,"abstract":"A new construction method of ZCZ arrays set based on interleaved technique is presented. Given perfect periodic autocorrelation array and orthogonal matrix, arrays set with certain zero correlation zone can be constructed through interleaved method. The presented technique has good application foreground in many kinds of array signal design.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127751429","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
Consideration of fast simulation technique of LDPC code LDPC代码快速仿真技术的思考
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408338
T. Shohon, Y. Hori, H. Ogiwara
{"title":"Consideration of fast simulation technique of LDPC code","authors":"T. Shohon, Y. Hori, H. Ogiwara","doi":"10.1109/IWSDA.2007.4408338","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408338","url":null,"abstract":"This paper proposes a method to estimate bit-error rate (BER) at high signal-to-noise ratio. The computer simulation result of the proposed method shows good agreement with those of the original Monte Carlo (MC) simulations. By using the proposed method, the number of bits needed to computer simulation is reduced to 50% of the MC simulation for code length 1027[bit], It is reduced to 20% compared with the MC simulation for code length 4000[bit], The time to estimate BER for the proposed method is reduced to 60% of original envelop method.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117068955","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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