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

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Increasing of Wireless Frequency Usage Efficiency Using Orthogonal Signal Division Multiplexing with Multiple Antennas 多天线正交信分复用技术提高无线频率利用率
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408381
N. Suehiro, Rongzhen Jin, T. Ebihara, Chenggao Han
{"title":"Increasing of Wireless Frequency Usage Efficiency Using Orthogonal Signal Division Multiplexing with Multiple Antennas","authors":"N. Suehiro, Rongzhen Jin, T. Ebihara, Chenggao Han","doi":"10.1109/IWSDA.2007.4408381","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408381","url":null,"abstract":"Suehiro, et al. have proposed a new information transmission method using the Kronecker product between the rows of DFT matrix and the data sequences. It has been shown that the method has far better error probability property than OFDM method under the heavy multipath environment by a simulation under the stable multi-path environment. Because the 16 QAM system of the new method has almost the same error performance with the QPSK. system of the OFDM method, the new method can be regarded as two-times more efficient method than the OFDM method from the view point of wireless frequency usage efficiency. In this paper, the authors show the new method is fittable to multiple-antenna systems and the K antenna/K antenna system has almost 2K times larger wireless frequency usage efficiency than the single antenna OFDM system.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"36 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":"122636044","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
The Synthesis Methodology of Periodic Discretely Coded Sequences Formed Basing on Cyclotomic Classes with Basic Parameters Constraints 基于基本参数约束环切分类形成的周期离散编码序列的综合方法
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408404
G. Vladimir, E. Vladimir
{"title":"The Synthesis Methodology of Periodic Discretely Coded Sequences Formed Basing on Cyclotomic Classes with Basic Parameters Constraints","authors":"G. Vladimir, E. Vladimir","doi":"10.1109/IWSDA.2007.4408404","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408404","url":null,"abstract":"A new methodology for synthesis of sequences using a generalized coding rule over cyclotomic classes. This methodology represents a complex usage of the theory of residue classes difference spectrum by prime module and of the cyclotomic numbers. Moreover, the synthesis is performed regarding the generalized coding rule of both binary and ternary sequences with the defined constraints on the set of basic parameters: the level of the autocorrelation and cross-correlation function sidelobes, period, peak factor, imbalance.","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":"122110392","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
A New Multiple Access Protocol Based on the Active State of Neighboring Nodes for Mobile Ad Hoc Networks 一种基于相邻节点活跃状态的移动自组网多址接入新协议
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408375
J. Feng, Liu Yang, P. Fan
{"title":"A New Multiple Access Protocol Based on the Active State of Neighboring Nodes for Mobile Ad Hoc Networks","authors":"J. Feng, Liu Yang, P. Fan","doi":"10.1109/IWSDA.2007.4408375","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408375","url":null,"abstract":"For the shared channel in wireless ad hoc networks, the MAC access protocol with delayed backoff window scheme is commonly adopted. This paper presents a new multiple protocol based on the active state of neighboring nodes (BASNN) for mobile ad hoc networks. If a source node has a packet to send, and the number of the active neighbors is n in the T cycle, then the source node sends a RTS (request-to-send) packet with probability Min{ a/(n+1),1} or backoff with probability 1-Min{a/(n+1),1}. It is shown by analysis and simulation that, based on the new protocol, the throughput performance of the networks is significantly increased.","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":"129712636","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
On Shift Bound for Cyclic Codes by DFT with Unknown Elements 含未知元的循环码的DFT移位界研究
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408337
Junru Zheng, T. Kaida
{"title":"On Shift Bound for Cyclic Codes by DFT with Unknown Elements","authors":"Junru Zheng, T. Kaida","doi":"10.1109/IWSDA.2007.4408337","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408337","url":null,"abstract":"The shift bound is a good lower bound of the minimum distance for cyclic codes, Reed-Muller codes and geometric Goppa codes. In this paper we consider cyclic codes defined by defining sequence and new simple derivation using the discrete Fourier transform with unknown elements and the Blahut theorem is shown. Moreover two examples of binary cyclic codes are given.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"70 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":"129713282","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
The Recursive Fusion Algorithm with Out-of-Sequence Measurements for Sensor Networks 传感器网络中无序测量的递归融合算法
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408400
Chenglin Wen, Xianfeng Tang, Quanbo Ge
{"title":"The Recursive Fusion Algorithm with Out-of-Sequence Measurements for Sensor Networks","authors":"Chenglin Wen, Xianfeng Tang, Quanbo Ge","doi":"10.1109/IWSDA.2007.4408400","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408400","url":null,"abstract":"In the target tracking system, the phenomenon of \"out-of-sequence\" measurements (OOSM) always occurs due to different rate of data transmission and random communication delays. The fusion problem with one-step-lag OOSM for sensor networks is researched in this paper. A recursive algorithm is derived based on algorithm Al and the sequential weighted fusion technology. With the exception of slightly lower fusion accuracy, the proposed algorithm is better than the existing approach (X. B. Zhang et al., 2006) in other performance indexes, such as real-time performance, storage, applicability and fault tolerance. So, the application ability of the existing method is greatly limited in practical systems. The superiority of the novel algorithm is shown by performance analysis and computer simulation.","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":"130710989","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
Optimal pilot design for MIMO-OFDM system channel estimation in time domain MIMO-OFDM系统时域信道估计的导频优化设计
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408386
Han Wang, Jinkuan Wang
{"title":"Optimal pilot design for MIMO-OFDM system channel estimation in time domain","authors":"Han Wang, Jinkuan Wang","doi":"10.1109/IWSDA.2007.4408386","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408386","url":null,"abstract":"In this paper, we propose a least squares (LS) channel estimation scheme in time domain for MIMO-OFDM systems based on pilot tones. The basic idea is that time-domain signals generated by pilots of transmitter and receiver are used to estimate the time-domain channel responses. Optimal pilot sequences (OPS) with regard to (w.r.t) the mean square error (MSE) of LS channel estimation are also presented; It is shown that the OPS are equipowered, equispaced, and position orthogonal. The maximum guard bandwidth (MGB) w.r.t MSE is introduced, as virtual subcarriers are not used for transmission. If the guard bandwidth of MIMO-OFDM system is less than or equal to the MGB, the OPS can be avoided from the guard band by adjusting initial position of OPS. Through simulations, it is shown that the OPS derived in this paper outperform conventional OPS in terms of MGB and MSE.","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":"133299739","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
New Constructions of ZCZ Sequence Set with Large Family Size 具有大族数的ZCZ序列集的新构造
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408418
Xin Tong, Q. Wen
{"title":"New Constructions of ZCZ Sequence Set with Large Family Size","authors":"Xin Tong, Q. Wen","doi":"10.1109/IWSDA.2007.4408418","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408418","url":null,"abstract":"Two new methods of constructing zero correlation zone (ZCZ) sequence set with large family size from an known one are presented. Compared with the original ZCZ sequence set, the proposed sequence sets which can be generated from the correlation product of arbitrary unitary matrices and the original ZCZ sequence set, has longer period, larger family size, and wider zero correlation zone. Furthermore, we can prove that if the original ZCZ sequence set with wide ZCZ is optimal with respect to the mathematical bound, then the new sequence sets are approximately optimal.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"188 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":"132551024","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
New Binary ZCZ Sequence Sets with Mismatched Filtering 新的带不匹配滤波的二进制ZCZ序列集
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408372
E. Krengel
{"title":"New Binary ZCZ Sequence Sets with Mismatched Filtering","authors":"E. Krengel","doi":"10.1109/IWSDA.2007.4408372","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408372","url":null,"abstract":"New binary sequence sets with zero correlation zone (ZCZ) have been constructed on the basis of almost-perfect binary and almost-perfect ternary sequences and mismatched filtering. The obtained sequences have energy efficiency close to 1 when length becomes large and in most of cases length of their ZCZ exceeds the upper bound of binary ZCZ sequences. These sequences can be used in quasi-synchronous code division multiple access (QS-CDMA) and radar systems to reduce multi-channel and multi-path interference.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"31 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":"132306074","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
Zero Correlation Distribution of ZCZ Sequences Obtained from a Perfect Sequence and a Unitary Matrix 由完美序列和酉矩阵得到的ZCZ序列的零相关分布
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1093/ietfec/e91-a.12.3745
S. Uehara, S. Jono, Y. Nogami
{"title":"Zero Correlation Distribution of ZCZ Sequences Obtained from a Perfect Sequence and a Unitary Matrix","authors":"S. Uehara, S. Jono, Y. Nogami","doi":"10.1093/ietfec/e91-a.12.3745","DOIUrl":"https://doi.org/10.1093/ietfec/e91-a.12.3745","url":null,"abstract":"A class of zero-correlation zone (ZCZ) sequences constructed by the recursive procedure from a perfect sequence and a unitary matrix was proposed by Torii, Nakamura, and Suehiro (2004). In the reference H. Torii et al. (2004), properties of just enough for the class of sequences used in approximately synchronized CDMA (AS-CDMA) systems were considered. In this paper, we give more detailed distributions of correlation values for their ZCZ sequence sets, and expect that the results make an effect on any applications employing AS-CDMA systems.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"43 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":"134142345","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
Anti-impact and Over-loading Projectile Conformal Antennas for GPS GPS抗冲击与过载弹形天线
2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI: 10.1109/IWSDA.2007.4408374
Sun Lei, Zhu Jihong, Zhang-Hong He, Peng Xue-lian
{"title":"Anti-impact and Over-loading Projectile Conformal Antennas for GPS","authors":"Sun Lei, Zhu Jihong, Zhang-Hong He, Peng Xue-lian","doi":"10.1109/IWSDA.2007.4408374","DOIUrl":"https://doi.org/10.1109/IWSDA.2007.4408374","url":null,"abstract":"In this article, design and implement of anti-impact and over-loading projectile conform al antennas for GPS is introduced. First step, material and thickness of base for antennas should be chosen, then width and length of antennas is calculated, next step to polarize antennas and give location of feed points. The designed antenna is emulated and analyzed by IE3D software, and certain parameter is modulated. At last anti-impact and over loading experiment s is carried to prove designed antenna could be applied in execrable condition, and location experiments is carried to show actual effect of designed antenna.","PeriodicalId":303512,"journal":{"name":"2007 3rd International Workshop on Signal Design and Its Applications in Communications","volume":"79 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":"115829460","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
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