Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702844
A. Paier, Daniele Faetani, C. Mecklenbrauker
We evaluate the physical layer of infrastructure-to-vehicle communications from real-world measurements. For the measurements, a prototypical implementation of IEEE 802.11p was deployed in two roadside units (RSUs) along a highway in Austria. The required signal-to-noise ratio (SNR) for achieving a frame-error-ratio (FER) less than 0.1 is estimated from measurements for various configurations of data rate, packet length, and vehicle speed. Evaluations show that for a RSU with an antenna mounted at a low height (1.8m) the required SNR depends on the packet length. This is not the case for a RSU, where the antenna is mounted higher (7.1 m). Further the averaged required SNR over all different parameter settings for the low RSU is 4.6 dB larger compared to the required SNR for the high RSU.
{"title":"Performance evaluation of IEEE 802.11p physical layer infrastructure-to-vehicle real-world measurements","authors":"A. Paier, Daniele Faetani, C. Mecklenbrauker","doi":"10.1109/ISABEL.2010.5702844","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702844","url":null,"abstract":"We evaluate the physical layer of infrastructure-to-vehicle communications from real-world measurements. For the measurements, a prototypical implementation of IEEE 802.11p was deployed in two roadside units (RSUs) along a highway in Austria. The required signal-to-noise ratio (SNR) for achieving a frame-error-ratio (FER) less than 0.1 is estimated from measurements for various configurations of data rate, packet length, and vehicle speed. Evaluations show that for a RSU with an antenna mounted at a low height (1.8m) the required SNR depends on the packet length. This is not the case for a RSU, where the antenna is mounted higher (7.1 m). Further the averaged required SNR over all different parameter settings for the low RSU is 4.6 dB larger compared to the required SNR for the high RSU.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121274876","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702867
K. Kwak, S. Ullah, N. Ullah
Wireless Body Area Networks (WBAN) has emerged as a key technology to provide real-time health monitoring of a patient and to diagnose and treat many life threatening diseases. WBAN operates in close vicinity to, on, or inside a human body and supports a variety of medical and non-medical applications. IEEE 802 has established a Task Group called IEEE 802.15.6 for the standardization of WBAN. The purpose of the group is to establish a communication standard optimized for low-power in-body/on-body nodes to serve a variety of medical and non-medical applications. This paper explains the most important features of the new IEEE 802.15.6 standard. The standard defines a Medium Access Control (MAC) layer supporting several Physical (PHY) layers. We briefly overview the PHY and MAC layers specifications together with the bandwidth efficiency of IEEE 802.15.6 standard. We also discuss the security paradigm of the standard.
{"title":"An overview of IEEE 802.15.6 standard","authors":"K. Kwak, S. Ullah, N. Ullah","doi":"10.1109/ISABEL.2010.5702867","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702867","url":null,"abstract":"Wireless Body Area Networks (WBAN) has emerged as a key technology to provide real-time health monitoring of a patient and to diagnose and treat many life threatening diseases. WBAN operates in close vicinity to, on, or inside a human body and supports a variety of medical and non-medical applications. IEEE 802 has established a Task Group called IEEE 802.15.6 for the standardization of WBAN. The purpose of the group is to establish a communication standard optimized for low-power in-body/on-body nodes to serve a variety of medical and non-medical applications. This paper explains the most important features of the new IEEE 802.15.6 standard. The standard defines a Medium Access Control (MAC) layer supporting several Physical (PHY) layers. We briefly overview the PHY and MAC layers specifications together with the bandwidth efficiency of IEEE 802.15.6 standard. We also discuss the security paradigm of the standard.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127800944","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702795
S. Kelly, P. Doyle, A. Priplata, Oscar Mendoza, J. Wyatt
A retinal prosthesis telemetry system is examined, and several methods are explored to optimize the size of the external primary telemetry coil to maximize the wireless delivery of power to an implanted secondary coil of constrained size. A simplified version of the Biot-Savart Law is used to give a first-pass optimal primary coil size for a small secondary coil. Numerical integration is then used to improve the optimization for larger secondary coils, and this calculation is repeated across a range of secondary coil radii. Finally, the effects of eye rotation angle are explored, with the future goal of expanding the optimization techniques to cover the predicted range of angular eye excursions.
{"title":"Optimal primary coil size for wireless power telemetry to medical implants","authors":"S. Kelly, P. Doyle, A. Priplata, Oscar Mendoza, J. Wyatt","doi":"10.1109/ISABEL.2010.5702795","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702795","url":null,"abstract":"A retinal prosthesis telemetry system is examined, and several methods are explored to optimize the size of the external primary telemetry coil to maximize the wireless delivery of power to an implanted secondary coil of constrained size. A simplified version of the Biot-Savart Law is used to give a first-pass optimal primary coil size for a small secondary coil. Numerical integration is then used to improve the optimization for larger secondary coils, and this calculation is repeated across a range of secondary coil radii. Finally, the effects of eye rotation angle are explored, with the future goal of expanding the optimization techniques to cover the predicted range of angular eye excursions.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128135965","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702904
S. Badillo, T. Vincent, P. Ciuciu
Inter-subject analysis of functional Magnetic Resonance Imaging (fMRI) data relies on single intra-subject studies, which are usually conducted using a massively univariate approach. In this paper, we investigate the impact of an improved intra-subject analysis on group studies. Our approach is based on the use of Adaptive Spatial Mixture Models within a joint detection-estimation (JDE) framework [1]. In this setting, spatial variability is achieved at a regional scale by the explicit characterization of the hemodynamic filter and at the voxel scale by an adaptive spatial correlation model between condition-specific effects. For the group statistics, we conducted several Random effect analyses (RFX) which relied either on SPM or JDE intra-subject analyses. We performed a comparative study on two different real datasets involving the same paradigm and the same 15 subjects but eliciting different noise levels by varying the acceleration factor (R=2 and R=4) in parallel MRI acquisition. We show that brain activations appear more spatially resolved using JDE instead of SPM and that a better sensitivity is achieved. Moreover, the JDE framework provides more robust detection performance by maintaining satisfying results on our most noisy real dataset.
{"title":"Spatially adaptive subject level analyses improve random effects fMRI group studies","authors":"S. Badillo, T. Vincent, P. Ciuciu","doi":"10.1109/ISABEL.2010.5702904","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702904","url":null,"abstract":"Inter-subject analysis of functional Magnetic Resonance Imaging (fMRI) data relies on single intra-subject studies, which are usually conducted using a massively univariate approach. In this paper, we investigate the impact of an improved intra-subject analysis on group studies. Our approach is based on the use of Adaptive Spatial Mixture Models within a joint detection-estimation (JDE) framework [1]. In this setting, spatial variability is achieved at a regional scale by the explicit characterization of the hemodynamic filter and at the voxel scale by an adaptive spatial correlation model between condition-specific effects. For the group statistics, we conducted several Random effect analyses (RFX) which relied either on SPM or JDE intra-subject analyses. We performed a comparative study on two different real datasets involving the same paradigm and the same 15 subjects but eliciting different noise levels by varying the acceleration factor (R=2 and R=4) in parallel MRI acquisition. We show that brain activations appear more spatially resolved using JDE instead of SPM and that a better sensitivity is achieved. Moreover, the JDE framework provides more robust detection performance by maintaining satisfying results on our most noisy real dataset.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133303560","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702802
M. Lakshmanan, D. D. Ariananda, H. Nikookar
Wavelet packet transform is a recent addition to the rich arsenal of the signal processing tool box. In this article, we investigate the application of wavelet packet transform as a novel spectral analysis tool. The estimator is realized by a tree structure obtained by cascading a pair of half-band high and low pass filters. The main attraction for wavelet packets (WP) is the tradeoffs they offer in terms of satisfying various performance metrics such as frequency resolution, side lobe suppression and variance of the estimated power spectral density (PSD). Furthermore, the state of art in the application of wavelet transform for spectrum estimation is carried forward by bringing in a few optimizations which correct undesirable edge based artifacts that occur in the standard implementations. The systems are evaluated through simulation studies the results of which show that the proposed wavelet based approach offers great flexibility and adaptability apart from its performances which are significantly better than Fourier based estimates.
{"title":"On the edge based artifact mitigation in wavelet packet transform for enhancement of spectral estimation","authors":"M. Lakshmanan, D. D. Ariananda, H. Nikookar","doi":"10.1109/ISABEL.2010.5702802","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702802","url":null,"abstract":"Wavelet packet transform is a recent addition to the rich arsenal of the signal processing tool box. In this article, we investigate the application of wavelet packet transform as a novel spectral analysis tool. The estimator is realized by a tree structure obtained by cascading a pair of half-band high and low pass filters. The main attraction for wavelet packets (WP) is the tradeoffs they offer in terms of satisfying various performance metrics such as frequency resolution, side lobe suppression and variance of the estimated power spectral density (PSD). Furthermore, the state of art in the application of wavelet transform for spectrum estimation is carried forward by bringing in a few optimizations which correct undesirable edge based artifacts that occur in the standard implementations. The systems are evaluated through simulation studies the results of which show that the proposed wavelet based approach offers great flexibility and adaptability apart from its performances which are significantly better than Fourier based estimates.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134014618","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702810
A. Bernardino, E. Bernardino, J. M. Sánchez-Pérez, J. Gómez-Pulido, M. A. Vega-Rodríguez
When managed properly, the ring networks are uniquely suited to deliver a large amount of bandwidth in a reliable and inexpensive way. An optimal load balancing is very important, because it increases the system capacity and improves the overall ring performance. An important optimisation problem in this context is the Weighted Ring Arc Loading Problem (WRALP). It consists of the design, in a communication network of a transmission route (direct path) for each request, such that high load on the ring arcs will be avoided. WRALP asks for a routing scheme such that the maximum load on the ring arcs will be minimum. In this paper we study WRALP without demand splitting and we propose a Hybrid Population-based Incremental Learning (HPBIL) to solve it. We show that HPBIL is able to achieve good solutions, improving the results obtained by previous approaches.
{"title":"A Hybrid Population-Based Incremental Learning algorithm for load balancing in RPR","authors":"A. Bernardino, E. Bernardino, J. M. Sánchez-Pérez, J. Gómez-Pulido, M. A. Vega-Rodríguez","doi":"10.1109/ISABEL.2010.5702810","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702810","url":null,"abstract":"When managed properly, the ring networks are uniquely suited to deliver a large amount of bandwidth in a reliable and inexpensive way. An optimal load balancing is very important, because it increases the system capacity and improves the overall ring performance. An important optimisation problem in this context is the Weighted Ring Arc Loading Problem (WRALP). It consists of the design, in a communication network of a transmission route (direct path) for each request, such that high load on the ring arcs will be avoided. WRALP asks for a routing scheme such that the maximum load on the ring arcs will be minimum. In this paper we study WRALP without demand splitting and we propose a Hybrid Population-based Incremental Learning (HPBIL) to solve it. We show that HPBIL is able to achieve good solutions, improving the results obtained by previous approaches.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134561469","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702881
M. Radványi, K. Karacs
In this paper we present an algorithm that help blind and visually impaired people to navigate through urban environments by detecting pedestrian crosswalks. In addition to detecting the presence of a crosswalk, its orientation and position respected to the camera is also determined to help the approach of intersections and traversing them.
{"title":"Navigation through crosswalks with the Bionic Eyeglass","authors":"M. Radványi, K. Karacs","doi":"10.1109/ISABEL.2010.5702881","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702881","url":null,"abstract":"In this paper we present an algorithm that help blind and visually impaired people to navigate through urban environments by detecting pedestrian crosswalks. In addition to detecting the presence of a crosswalk, its orientation and position respected to the camera is also determined to help the approach of intersections and traversing them.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115203004","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702883
Mohieddine El Soussi
We1 consider the problem of two transmitters would like to communicate with a destination with the help of a half-duplex relay. In this work, we are presenting the advantages of using nested lattices for the AWGN channels. The sources map their messages using lattice code and then broadcast them to the relay and the destination. The relay receives two independent symbols at the same channel. The relay either combines the two symbols using lattice modulo and then decode or decode the two symbols separately also using modulo lattice, then forwards the new symbol to the destination. The destination tries to recover the two messages using different decoding strategies. One of the strategies is to recover two linear equations in function of the two received symbols with integer coefficients then, solve these equations to recover the two messages. The integer coefficients need to be optimally selected to reduce the noise at the receivers. The other strategy is to use successive decoding at the relay and the destination. This strategy outperforms the first when two integer coefficients are zero. The strategies are discussed and compared with the traditional DF (Decode and Forward). The simulation results show the advantages of using lattice codes and the improvement in rates for certain regimes.
{"title":"Network coding for the Multiple Access Relay channel using lattices","authors":"Mohieddine El Soussi","doi":"10.1109/ISABEL.2010.5702883","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702883","url":null,"abstract":"We1 consider the problem of two transmitters would like to communicate with a destination with the help of a half-duplex relay. In this work, we are presenting the advantages of using nested lattices for the AWGN channels. The sources map their messages using lattice code and then broadcast them to the relay and the destination. The relay receives two independent symbols at the same channel. The relay either combines the two symbols using lattice modulo and then decode or decode the two symbols separately also using modulo lattice, then forwards the new symbol to the destination. The destination tries to recover the two messages using different decoding strategies. One of the strategies is to recover two linear equations in function of the two received symbols with integer coefficients then, solve these equations to recover the two messages. The integer coefficients need to be optimally selected to reduce the noise at the receivers. The other strategy is to use successive decoding at the relay and the destination. This strategy outperforms the first when two integer coefficients are zero. The strategies are discussed and compared with the traditional DF (Decode and Forward). The simulation results show the advantages of using lattice codes and the improvement in rates for certain regimes.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116719471","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702835
C. Kocks, A. Vießmann, Andrey Skrebtsov, G. Bruck, P. Jung
The recent years showed an increasing demand for higher data rates in communication systems in general. To keep up with the reduced time-to-market in this area, an elaborate prototyping concept is inevitable. The authors propose a prototyping platform which combines the advantages of the flexibility of a digital signal processor with the efficient parallelization capabilities of a field-programmable gate array. The primary purpose of this platform is to allow a real-time capable implementation of current as well as next generation communication standards. The focus has been put on the integration of the full communication chain from the antenna to the decoded bit stream. Since the ever increasing computational complexity complicates the dimensioning of such platforms, scalability was a crucial design constraint for the presented concept. Interconnecting multiple platforms can be used to establish even complex multi-antenna systems.
{"title":"eFalcon — A scalable prototyping platform for next generation communication systems","authors":"C. Kocks, A. Vießmann, Andrey Skrebtsov, G. Bruck, P. Jung","doi":"10.1109/ISABEL.2010.5702835","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702835","url":null,"abstract":"The recent years showed an increasing demand for higher data rates in communication systems in general. To keep up with the reduced time-to-market in this area, an elaborate prototyping concept is inevitable. The authors propose a prototyping platform which combines the advantages of the flexibility of a digital signal processor with the efficient parallelization capabilities of a field-programmable gate array. The primary purpose of this platform is to allow a real-time capable implementation of current as well as next generation communication standards. The focus has been put on the integration of the full communication chain from the antenna to the decoded bit stream. Since the ever increasing computational complexity complicates the dimensioning of such platforms, scalability was a crucial design constraint for the presented concept. Interconnecting multiple platforms can be used to establish even complex multi-antenna systems.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"566 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123114707","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}
Pub Date : 2010-11-01DOI: 10.1109/ISABEL.2010.5702882
F. Mesiti, M. Delgado, M. Mondin, F. Daneshgaran
This paper deals with the use of sparse-graph codes (and in particular, Low density Parity Check — LDPC — codes) for information reconciliation and pre-data sifting in Quantum Key Distribution (QKD). We model the overall channel used in QKD as the parallel of the quantum channel, where the actual quantum key is transmitted, and a public Additive White Gaussian Noise (AWGN) channel, where the parity check bits are transmitted. The metrics derived from the two channels are jointly processed at the receiver by properly combining the metrics derived from the two channels and exploiting capacity achieving soft-metric based iteratively decoded sparse-graph codes. The information derived from the iterative decoder are used to (1) perform error correction of the received q-bits; (2) detect the possible presence of unauthorized eavesdroppers; (3) perform pre-data sifting. The performance of the proposed mixed-soft-metric algorithms are studied via simulations as a function of the system parameters. The core ideas of the paper are: a) employing FEC coding as opposed to two-way communication for information reconciliation, minimizing the interactions between transmitter and receiver; b) exploiting all the available information for data processing at the receiver including information available from the quantum channel; c) using convergence properties of the code to estimate QBER and presence of an eavesdropper.1
{"title":"Sparse-graph codes for information reconciliation in QKD applications","authors":"F. Mesiti, M. Delgado, M. Mondin, F. Daneshgaran","doi":"10.1109/ISABEL.2010.5702882","DOIUrl":"https://doi.org/10.1109/ISABEL.2010.5702882","url":null,"abstract":"This paper deals with the use of sparse-graph codes (and in particular, Low density Parity Check — LDPC — codes) for information reconciliation and pre-data sifting in Quantum Key Distribution (QKD). We model the overall channel used in QKD as the parallel of the quantum channel, where the actual quantum key is transmitted, and a public Additive White Gaussian Noise (AWGN) channel, where the parity check bits are transmitted. The metrics derived from the two channels are jointly processed at the receiver by properly combining the metrics derived from the two channels and exploiting capacity achieving soft-metric based iteratively decoded sparse-graph codes. The information derived from the iterative decoder are used to (1) perform error correction of the received q-bits; (2) detect the possible presence of unauthorized eavesdroppers; (3) perform pre-data sifting. The performance of the proposed mixed-soft-metric algorithms are studied via simulations as a function of the system parameters. The core ideas of the paper are: a) employing FEC coding as opposed to two-way communication for information reconciliation, minimizing the interactions between transmitter and receiver; b) exploiting all the available information for data processing at the receiver including information available from the quantum channel; c) using convergence properties of the code to estimate QBER and presence of an eavesdropper.1","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122691584","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}
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