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2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)最新文献

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Constructions of Gaussian integer Z-periodic complementary sequence sets 高斯整数z周期互补序列集的构造
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8095725
Xiaoyu Chen, Yubo Li, Xiuping Peng, Hongbin Lin
{"title":"Constructions of Gaussian integer Z-periodic complementary sequence sets","authors":"Xiaoyu Chen, Yubo Li, Xiuping Peng, Hongbin Lin","doi":"10.1109/IWSDA.2017.8095725","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8095725","url":null,"abstract":"This paper presents two constructions of Gaussian integer Z-periodic complementary sequence (ZPCS) sets. Construction I employs a ZPCS set as the original sequence set, however, the parameters of the resultant sequence sets cannot be flexibly chosen. Construction II generates Gaussian integer ZPCS sets using an orthogonal matrix, the ZCZ length and the flock size have flexible choices. The sequences obtained in the proposed constructions can be used in multi-carriers code division multiple access (MC-CDMA) systems to remove interference.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126050955","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
Raptor decoding for high overloaded wireless super-dense networks 猛禽解码高过载无线超密集网络
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8095730
I. Ramatryana, K. Anwar
{"title":"Raptor decoding for high overloaded wireless super-dense networks","authors":"I. Ramatryana, K. Anwar","doi":"10.1109/IWSDA.2017.8095730","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8095730","url":null,"abstract":"This paper proposes Raptor codes-structured wireless super-dense networks serving a massive number of users with passive nodes constructing a precode of Raptor codes for future wireless networks. Passive nodes do not have their own information and only forward information from the neighboring nodes to the destination node. Similar to the capability of precode of Raptor coding scheme to protect information from error, the passive nodes in the proposed super-dense networks also provide additional coding gain to the networks leading to non-dropping performance of the throughput when the networks are overloaded. The performances of the proposed wireless networks are evaluated under Rayleigh fading channels in terms of packet-loss rate (PLR) and throughput based on computer simulations. The results confirm that the Raptor codes-structured wireless networks have additional capability of performing error correction by preventing the drop of throughput when the networks are overloaded compared to wireless networks without passive nodes. The results are interesting since the passive nodes can work as bridges between random access and scheduled access schemes depending on the available time-slots and computational complexity of decoding.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123713638","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
Influence of ISI on synchronous OCDMA system using an optical ZCZ sequence set on a diffuse channel ISI对在漫射信道上使用光学ZCZ序列集的同步OCDMA系统的影响
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8097077
Takahiro Matsumoto, Masanori Kurashita, Yasuaki Ohira, H. Torii, Y. Ida, S. Matsufuji
{"title":"Influence of ISI on synchronous OCDMA system using an optical ZCZ sequence set on a diffuse channel","authors":"Takahiro Matsumoto, Masanori Kurashita, Yasuaki Ohira, H. Torii, Y. Ida, S. Matsufuji","doi":"10.1109/IWSDA.2017.8097077","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8097077","url":null,"abstract":"In this paper, we analyze the bit error rate (BER) performance of synchronous optical code division multiple access (OCDMA) system using an optical zero-correlation zone (ZCZ) sequence set over diffuse link by computer simulation, and evaluate the influence of inter-symbol interference (ISI) on the system. The optical ZCZ sequence set is a set of pairs of binary and bi-phase sequences with zero-correlation zone. As a result, the ISI can suppress by extension of zero-correlation zone.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114903890","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
Reinhard's global operator based inverse tone mapping with one parameter 基于全局算子的单参数逆调映射
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8095734
Yuma Kinoshita, Sayaka Shiota, H. Kiya
{"title":"Reinhard's global operator based inverse tone mapping with one parameter","authors":"Yuma Kinoshita, Sayaka Shiota, H. Kiya","doi":"10.1109/IWSDA.2017.8095734","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8095734","url":null,"abstract":"This paper proposes a new inverse tone mapping operator (TMO) with only one parameter. The proposed inverse TMO is based on Reinhard's global operator which is a well-known TMO. Inverse TM operations have two applications: generating an HDR image from an existing LDR one, and reconstructing an original HDR image from the mapped LDR image. In this paper, we focus on the latter application and the proposed method can produce an HDR image that has high image quality. In the latter application, two parameters used in Reinhard's TMO, i.e. the key value α regarding brightness of a mapped LDR one and the geometric mean Lw of an original HDR one, are generally required for carrying out the Reinhard based inverse_TMO. In this paper, we show that it is possible to estimate Lw from α under some conditions, so that a new inverse TMO with one parameter is proposed. Experimental results show that the proposed method outperforms conventional ones for the latter application, in terms of high image quality and low computing cost.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122692534","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
Interpretation of polar codes with Plotkin construction based on Gaussian approximation 基于高斯近似的Plotkin结构的极码解译
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8097085
Jinsoo Park, Inseon Kim, Hong‐Yeop Song
{"title":"Interpretation of polar codes with Plotkin construction based on Gaussian approximation","authors":"Jinsoo Park, Inseon Kim, Hong‐Yeop Song","doi":"10.1109/IWSDA.2017.8097085","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8097085","url":null,"abstract":"In this paper, we interpret the polar codes based on Plotkin construction perspective. We briefly review the rate allocation for component codes of Plotkin codes and the construction of polar codes based on Gaussian approximation. Then, we show that the recursively constructed Plotkin codes can be a class of polar codes. And also, the polar codes are a class of Plotkin code having minimum threshold.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128562210","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
On the host signal approximation for image data hiding scheme based on complete complementary codes 基于完全互补码的主机信号逼近图像数据隐藏方案研究
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8097072
T. Kojima, K. Kato
{"title":"On the host signal approximation for image data hiding scheme based on complete complementary codes","authors":"T. Kojima, K. Kato","doi":"10.1109/IWSDA.2017.8097072","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8097072","url":null,"abstract":"Complete complementary code (CCC) is a family of spread spectrum sequences having ideal correlation properties. Digital watermarking techniques based on CCC have been proposed by the authors. It has been shown that the proposed digital watermarking has high payload capacity even in the blind detection case. An improvement of CCC-based digital watermarking scheme called HSA (host signal approximation) has been proposed. In HSA, embedding strengths are optimized in order to approximate the DCT components of the cover image with the embedded signals. In this method, different embedding strengths are applied to different embedded bits while a constant strength is applied to every embedded bit in the conventional method. In the previous studies, the performance of HSA has been shown only for a couple of example images. In this report, PSNR (peak-signal-to-noise ratio) and BER (bit error rate) performances of HSA are evaluated for over 100 cover images through numerical experiments. Also an improvement of HSA is also proposed.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133178708","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
New two-layered pseudo-noise code for optical-wireless code-shift keying/SCDMA 新的两层伪噪声光无线移码键控/SCDMA编码
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8097075
T. Tokunaga, H. Habuchi, Y. Kozawa
{"title":"New two-layered pseudo-noise code for optical-wireless code-shift keying/SCDMA","authors":"T. Tokunaga, H. Habuchi, Y. Kozawa","doi":"10.1109/IWSDA.2017.8097075","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8097075","url":null,"abstract":"In this paper, a design of two-layered pseudonoise (PN) code for optical-wireless code-shift keying (CSK) is considered. One of the important issues encountered in optical-wireless CSK systems is to design a PN code for enhancing code division multiple access (CDMA) capability and a ratio N/L between the number of codes (N) and the PN code length (L). In this paper, a CSK system using two-layered PN codes which consist of outer-codes with Lo chips and inner-codes with LI chips is proposed. Since the receiver of the proposed system can use the two-step demodulation scheme, it is expected that the proposed system suppress the performance degradation caused by co-channel interference. Consequently, N/L of the proposed system achieves more than 1. Moreover, when the length of the inner code is L/ and the length of outer code is LO, the proposed system can accommodate N/ — 1 users without co-channel interference in synchronous CDMA.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131264102","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 lower bound on the second-order nonlinearity of the class of Maiorana-McFarland bent functions Maiorana-McFarland弯曲函数类二阶非线性的下界
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8097084
Qi Gao, Deng Tang
{"title":"A lower bound on the second-order nonlinearity of the class of Maiorana-McFarland bent functions","authors":"Qi Gao, Deng Tang","doi":"10.1109/IWSDA.2017.8097084","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8097084","url":null,"abstract":"Boolean functions used in stream ciphers and block ciphers should have high second-order nonlinearity to resist several known attacks and some potential attacks which may exist but are not yet efficient and might be improved in the future. The second-order nonlinearity of Boolean functions also play an important role in coding theory, since its maximal value equals the covering radius of the second-order Reed-Muller code. But it is a extremely hard task to calculate and even to bound the second-order nonlinearity of Boolean functions. In this paper, we present a lower bound on the second-order nonlinearity of the class of Maiorana-McFarland (M-M) bent functions. As applications of our bound, we provide simpler and direct proofs for two known lower bounds on the second-order nonlinearity of functions in the class of M-M bent functions. We also derive a lower bound on the second-order nonlinearity of the functions which were conjectured bent by Canteaut and whose bentness was proved by Leander, by further employing our bound.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121367006","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
Linear complexity of generalized NTU sequences 广义NTU序列的线性复杂度
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8095739
K. Tsuchiya, Chiaki Ogawa, Y. Nogami, S. Uehara
{"title":"Linear complexity of generalized NTU sequences","authors":"K. Tsuchiya, Chiaki Ogawa, Y. Nogami, S. Uehara","doi":"10.1109/IWSDA.2017.8095739","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8095739","url":null,"abstract":"Pseudorandom number generators are required to generate pseudorandom numbers which have not only good statistical properties but also unpredictability in cryptography. A geometric sequence is a sequence given by applying a nonlinear feedforward function to an m-sequence. Nogami, Tada and Uehara proposed a geometric sequence whose nonlinear feedforward function is given by the Legendre symbol, and showed the period, periodic autocorrelation and linear complexity of the sequence. Furthermore, Nogami et al. proposed a generalization of the sequence (this sequence is referred to as the generalized NTU sequence), and showed the period and periodic autocorrelation. In this paper, we investigate the linear complexity of the generalized NTU sequences. Under some conditions, we can ensure that generalized NTU sequences have large linear complexity from the results on linear complexity of Sidel'nikov sequences.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125145495","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: 7
A construction of optimal generators of odd lengths for perfect sequence families 完美序列族奇长度最优发生器的构造
2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) Pub Date : 2017-09-01 DOI: 10.1109/IWSDA.2017.8097068
M. Song, Gangsan Kim, Hong‐Yeop Song
{"title":"A construction of optimal generators of odd lengths for perfect sequence families","authors":"M. Song, Gangsan Kim, Hong‐Yeop Song","doi":"10.1109/IWSDA.2017.8097068","DOIUrl":"https://doi.org/10.1109/IWSDA.2017.8097068","url":null,"abstract":"In this paper, we give a construction of optimal sets of N-ary perfect sequences of period N, where N a positive odd integer. For this, we first re-define generators, perfect generators, and optimal generators which were originally defined for odd prime lengths by Park, Song, Kim, and Golomb in 2016. Based on this, we propose a construction of optimal generators of odd lengths by using optimal generators of odd prime lengths. From an optimal generators of lengths N, we can construct many optimal set of N-ary perfect polyphase sequence of period N2.","PeriodicalId":363383,"journal":{"name":"2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122489536","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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