{"title":"User-friendly visual secret sharing for color images based on random grids","authors":"S. Paknahad, S. A. Hosseini, Mahdi R. Alagheband","doi":"10.1109/CSNDSP.2016.7573959","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7573959","url":null,"abstract":"A user-friendly visual secret sharing scheme without pixel expansion is presented for color images based on random grids. Since noise like shares are not user-friendly, a meaningful shares producing method can simplify mass data management. Firstly, black and white pixels distribution in shared images and stack image will be analyzed. Then, in order to control the quality of produced shared images and stack image a probability allocation plan will be proposed. In former methods there was a quality tradeoff between meaningful shares and stack image, but the proposed method increases tradeoff flexibility. Moreover the inability to adjust the visual quality is reduced by the proposed visual secret sharing scheme. The suggested method will be checked and compared to other schemes.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114293818","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}
{"title":"Demonstrating practical indoor LTE-over-optical wireless","authors":"G. Cossu, W. Ali, A. Sturniolo, E. Ciaramella","doi":"10.1109/CSNDSP.2016.7573979","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7573979","url":null,"abstract":"We show practical feasibility of Long-Term Evolution (LTE) based indoor coverage using optical wireless communication, exploiting commercially available Light Emitting Diodes (LEDs). A common LTE-Advanced signal is distributed in downlink by a visible LED, and in uplink by infrared LED (IR-LED). We demonstrate the bidirectional transmission operating in non-directed line-of-sight configuration. Assuming a distance of 2 m (ceiling to desk), the effective coverage is around 12 m2, with no need of complex line-of-sight tracking systems. These results indicate that this scheme has great potential for practical Visible Light Communication (VLC) system implementations in small-cell indoor environments and could be helpful for overcoming the capacity needs of the future indoor cellular networks.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125273408","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}
Abdullah Alomari, N. Aslam, W. Phillips, Frank Comeau
{"title":"Using the DV-Hop technique to increase the localization ratio in static path planning models in wireless sensor networks","authors":"Abdullah Alomari, N. Aslam, W. Phillips, Frank Comeau","doi":"10.1109/CSNDSP.2016.7574010","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7574010","url":null,"abstract":"Localization is essential to consider in relation to wireless sensor networks issues. Establishing mobility in the localization process creates improvements in various regards. Static path planning is one of a number of mobility models that are used in localization in wireless sensor networks. Most static path planning models depend on trilateration or triangulation concepts in direct connection fashion between unknown nodes and anchors for successful node localization; however, such methods are insufficient in cases of mobility discontinuity. Considering scenarios where the mobile anchor has limited movement, in this paper we propose using the DV-Hop technique to increase the localization ratio in static path planning models in wireless sensor networks.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125372864","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}
Mohamad Rahimi, G. Baghersalimi, Mohammad Reza Alizadeh, M. Najafi, N. B. Hassan
{"title":"BER assesment of a WCDMA-based Radio-over-Fiber system using a pilot-aided estimation and equalization approach","authors":"Mohamad Rahimi, G. Baghersalimi, Mohammad Reza Alizadeh, M. Najafi, N. B. Hassan","doi":"10.1109/CSNDSP.2016.7574034","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7574034","url":null,"abstract":"In this paper we assess the effects of nonlinear optical subsystem and linear time variant RF channel of Radio-over-Fiber (RoF) in Wideband Code Division Multiple Access (WCDMA) on the system bit error rate (BER) performance by computer simulations. These effects are compensated by pilot aided estimation and equalization approach at different Output Back-Off (OBOs) levels. BER plots show that this approach is an effective strategy even at maximum nonlinearity i.e. 0.0 dB OBO.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"500 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127033781","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}
{"title":"The new approximative model of multiservice Erlang's ideal grading with queues","authors":"S. Hanczewski, Damian Kmiecik, J. Weissenberg","doi":"10.1109/CSNDSP.2016.7573907","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7573907","url":null,"abstract":"The paper presents a new approximate model for multi-service, non-full-availability queueing system. This model can be used to model the access nodes of the network. Due to the fact that this model is a approximate model, the results obtained were compared with the results of simulation experiments. The comparison has allowed us to confirm the correctness of the model's assumptions.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126558420","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}
{"title":"Comments on “transform-limited pulse” and optical intensity autocorrelation","authors":"J. Chi","doi":"10.1109/CSNDSP.2016.7573954","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7573954","url":null,"abstract":"The cleanness of fast optical pulses, especially those transmitted through optical communication networks, is overwhelmingly referenced to and judged by the so-called “transform-limited pulse”, i.e., pulses with full-width at half-maximum (FWHM)-defined time-bandwidth product around 0.5. In this paper, we will demonstrate the fundamental flaw of this notion using our simulation results. Moreover, the pulse width is usually obtained by optical intensity autocorrelation plus curve-fitting, which may be misleading as well. Consequently, these standard methods of pulse characterization should be thoroughly re-considered.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121608943","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}
{"title":"A simple phase noise and full-range carrier frequency offset mitigation scheme for MIMO-OFDM systems","authors":"K. Puntsri, Jun Tong","doi":"10.1109/CSNDSP.2016.7573923","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7573923","url":null,"abstract":"This work presents a hardware-efficient and low-overhead scheme for mitigating the phase noise (PN) and full-range carrier frequency offset (CFO) in multi-input multi-output orthogonal frequency division multiplexing systems. To estimate the phase error due to PN and CFO, radio frequency pilot is used and only one pilot subcarrier is required per antenna. For the CFO estimation, this leads to a much lower overhead compared with the Moose method. To improve the system performance, a moving average filter is employed. The simulation results show that the proposed method gives a high tolerance to PN and CFO and simple to implement.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122230590","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}
{"title":"FSO artificial low-cost fog attenuation experiment design","authors":"Luka Mustafa, Eva Cerncic, B. Thomsen","doi":"10.1109/CSNDSP.2016.7573978","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7573978","url":null,"abstract":"A low-cost experiment, feasible without the use of laboratory-grade atmospheric chamber and optical spectral analyzer, was designed to experimentally evaluate the influence of fog and smoke on free-space optical systems. Low-visibility conditions were simulated using an artificial fog machine and smoke flares in a 50 m PVC corridor with several bi-directional wireless optical links established at wavelengths in the 1270 nm-1550 nm range with an additional green laser based measurement system. In low visibility conditions the variation in attenuation with wavelength was found to be larger than predicted by the standard model. We propose a new empirical model for this region and show that longer infra-red wavelengths are more suitable for free space optical communication.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"456 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127608674","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}
{"title":"Convergecast scheduling problem in case of given aggregation tree: The complexity status and some special cases","authors":"A. Erzin, A. Pyatkin","doi":"10.1109/CSNDSP.2016.7574007","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7574007","url":null,"abstract":"We consider the problem of conflict-free data aggregation in distributed wireless radio networks, that is known as a Convergecast Scheduling Problem. This problem is strongly NP-hard in general. However the complexity status of the problem remained open in the case when the aggregation tree was given. We have proved that in this case, the problem is also NP-hard. Additionally, we proposed several new approximate suboptimal solutions in the special cases of the problem on the grid graphs.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"6 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132062563","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}
{"title":"Hybrid DS/FH spread spectrum data transmission system for telemetry","authors":"R. Krenz, Marcin Rodziewicz","doi":"10.1109/CSNDSP.2016.7573935","DOIUrl":"https://doi.org/10.1109/CSNDSP.2016.7573935","url":null,"abstract":"In this paper a novel hybrid spread spectrum transmission system designed for transmitting telemetrie data from remote sites is presented. It can be used for low bit rates and long distance radio links. The system is based on Spreading-Code-Phase-Shift-Keying modulation and shows excellent immunity to narrowband and wideband interference. The implementation of the system in SDR technology is possible and multiple access is also straightforward.","PeriodicalId":298711,"journal":{"name":"2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115026513","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}