2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)最新文献_第9页

Performance evaluation of novel optical-wireless variable N-parallel code-shift-keying 新型光无线变n并行码移键控的性能评价

2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2016-12-01 DOI: 10.1109/ICSPCS.2016.7843359

Keisuke Osawa, H. Habuchi, Y. Kozawa

{"title":"Performance evaluation of novel optical-wireless variable N-parallel code-shift-keying","authors":"Keisuke Osawa, H. Habuchi, Y. Kozawa","doi":"10.1109/ICSPCS.2016.7843359","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843359","url":null,"abstract":"The indoor visible light communications have mainly the two serious problems; the bit error rate (BER) deterioration due to interference from ambient light and change of the data transmission efficiency according to dimming level. To settle the above problems, in this paper, the variable N-parallel code-shift-keying (VN-CSK) system with modified prime sequence codes (MPSC) for indoor visible light communications is considered. The VN-CSK system with MPSC achieves the same transmission efficiency by changing the number of the codes to select from M MPSCs depending on light regulation data. For example, if the number of MPSC is 5, the VN-CSK system with MPSC can realize 4 stages of dimming level. Moreover, the VN-CSK system with MPSC can suppress the influence of co-channel interference by using the group characteristics of MPSC. The bit error rate performance of the VN-CSK system with MPSC is evaluated in optical wireless channel by theoretical analysis. The VN-CSK system with MPSC can realize BER 10−6 when average received optical power per code is −49 [dBm] and the desired signal to interference signal ratio Pw/Pi ≥ 3 [dB].","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132530937","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

OFDMA system identification using cyclic autocorrelation function: A software defined radio testbed 基于循环自相关函数的OFDMA系统识别:一个软件定义的无线电试验台

2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2016-12-01 DOI: 10.1109/ICSPCS.2016.7843351

Halim Bahadir Tugrel, Hakan Alakoca, Kürşat Tekbıyık, Günes Karabulut-Kurt, Cem Ayyildiz

引用次数: 2

Audio authentication using the kurtosis of ESPRIT based ENF estimates 使用基于ENF估计的ESPRIT峰度的音频认证

2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2016-12-01 DOI: 10.1109/ICSPCS.2016.7843308

Paulo Max Gil Innocencio Reis, J. Costa, R. K. Miranda, G. D. Galdo

{"title":"Audio authentication using the kurtosis of ESPRIT based ENF estimates","authors":"Paulo Max Gil Innocencio Reis, J. Costa, R. K. Miranda, G. D. Galdo","doi":"10.1109/ICSPCS.2016.7843308","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843308","url":null,"abstract":"Digital audio recordings are an important source of evidences related to various crimes and conflicts. The authentication of this source of evidence is often a necessary and critical task, but still subject to many challenges. In order to identify audio tampering we present a new technique to detect deletions and insertions of audio snippets by exploiting anomalous variations in Electric Network Frequency (ENF) estimates of interfering power grid signal in an audio recording under test. The method is based on the hypothesis that insertions and deletions of audio snippets produce phase discontinuities in ENF. Such discontinuities cause abnormal disturbances on the estimated ENF. First we employ an ESPRIT based ENF estimation technique. Next we propose a feature based on the kurtosis of the ESPRIT estimates that measures the outlierness of ENF variations. Finally we propose an automatic detector of ENF disturbance by a linear discriminant. The proposed method outperforms state-of-the-art approach in low signal-to-nose rates scenarios. To asses our results we use a corpus with 100 edited and 100 unedited authorized audio recordings of phone calls named Carioca 1.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124677313","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

Concatenated image completion via tensor augmentation and completion 通过张量增强和补全实现拼接图像补全

2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2016-07-14 DOI: 10.1109/ICSPCS.2016.7843326

Johann A. Bengua, H. Tuan, H. N. Phien, M. Do

{"title":"Concatenated image completion via tensor augmentation and completion","authors":"Johann A. Bengua, H. Tuan, H. N. Phien, M. Do","doi":"10.1109/ICSPCS.2016.7843326","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843326","url":null,"abstract":"This paper proposes a novel framework called concatenated image completion via tensor augmentation and completion (ICTAC), which recovers missing entries of color images with high accuracy. Typical images are second-or third-order tensors (2D/3D) depending if they are grayscale or color, hence tensor completion algorithms are ideal for their recovery. The proposed framework performs image completion by concatenating copies of a single image that has missing entries into a third-order tensor, applying a dimensionality augmentation technique to the tensor, utilizing a tensor completion algorithm for recovering its missing entries, and finally extracting the recovered image from the tensor. The solution relies on two key components that have been recently proposed to take advantage of the tensor train (TT) rank: A tensor augmentation tool called ket augmentation (KA) that represents a low-order tensor by a higher-order tensor, and the algorithm tensor completion by parallel matrix factorization via tensor train (TMac-TT), which has been demonstrated to outperform state-of-the-art tensor completion algorithms. Simulation results for color image recovery show the clear advantage of our framework against current state-of-the-art tensor completion algorithms.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133363360","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

Joint power allocation for MIMO-OFDM communication with full-duplex relaying 采用全双工中继的MIMO-OFDM通信的联合功率分配

2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 1900-01-01 DOI: 10.1109/ICSPCS.2016.7843374

H. Tuan, D. T. Ngo, H. H. M. Tam

{"title":"Joint power allocation for MIMO-OFDM communication with full-duplex relaying","authors":"H. Tuan, D. T. Ngo, H. H. M. Tam","doi":"10.1109/ICSPCS.2016.7843374","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843374","url":null,"abstract":"We address the problem of joint power allocation in a two-hop MIMO-OFDM link where a source node sends data to a destination node via an amplify-and-forward relay. Since the relay operates in the full-duplex mode, it receives and forwards data simultaneously. Our design objective is to maximize the end-to-end throughput, subject to either the joint sum-power constraint of both the source and the relay or the individual sum-power constraints at the source and the relay. The formulated problems are large-scale nonconvex optimization problems, for which efficient and optimal solutions are not available. Using the successive convex optimization approach, we develop a novel iterative algorithm of extremely low complexity that is especially suitable for large-scale computation. In each iteration, a simple closed-form solution is derived for the approximated convex program. The proposed algorithm is proved to always converge to at least a local optimum of the original nonconvex problems. Numerical results confirm that the devised algorithm converges quickly, and that our optimal power allocation solutions help realize the potential throughput gain of MIMO-OFDM full-duplex relaying over the conventional half-duplex relaying strategy.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131757829","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