Pub Date : 2017-04-07DOI: 10.1109/WOCC.2017.7928974
Qian Wang, Timothy Dunlap, Youngho Cho, G. Qu
Denial of service (DoS) attacks have been one of the major network security problems over the last decades. DoS attacks can usually be mounted on hardware devices such as routers and firewalls to send spoofing messages to the target network. Thus, methods for defeating such DoS attacks are highly related to the vulnerabilities in the hardware devices. In this paper, we investigate the potential attacks specific to the hardware infrastructure of the network and also categorize the countermeasures against DoS attacks that can be implemented on hardware devices. Moreover, we analyze the advantages of the emerging silicon physical unclonable functions and discuss the potential of integrating them into authentication methods in order to defend against DoS attacks.
{"title":"DoS attacks and countermeasures on network devices","authors":"Qian Wang, Timothy Dunlap, Youngho Cho, G. Qu","doi":"10.1109/WOCC.2017.7928974","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7928974","url":null,"abstract":"Denial of service (DoS) attacks have been one of the major network security problems over the last decades. DoS attacks can usually be mounted on hardware devices such as routers and firewalls to send spoofing messages to the target network. Thus, methods for defeating such DoS attacks are highly related to the vulnerabilities in the hardware devices. In this paper, we investigate the potential attacks specific to the hardware infrastructure of the network and also categorize the countermeasures against DoS attacks that can be implemented on hardware devices. Moreover, we analyze the advantages of the emerging silicon physical unclonable functions and discuss the potential of integrating them into authentication methods in order to defend against DoS attacks.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"3 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78709812","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 : 2017-04-07DOI: 10.1109/WOCC.2017.7928983
B. Fahs, Matthew J. Senneca, Jeffrey Chellis, Brandon Mazzara, S. Ray, J. Ghasemi, Yun Miao, P. Zarkesh-Ha, V. Koomson, M. Hella
This paper presents a free-space 4-channels imaging multiple-input multiple-output (MIMO) system for On-Off-Keying (OOK) Visible-Light-Communication (VLC) links. An aggregate data-rate of 600 Mb/s is measured over 6 meters link distance with a bit-error-rate (BER) below 10−3 with the 4-channels simultaneously modulated. While the majority of published VLC works to date use components-off-the-shelf (COTS) PIN or Avalanche PDs that require both non-standard and/or higher cost fabrication processes as well as high reverse bias potential, the presented receiver in this paper employs a 2×2 on-chip Nwell/Psub photodiodes (PD) array fabricated in a low cost CMOS-compatible process. To extract high data rate performance out of the proposed CMOS low speed PD array, a 2nd-order LCR equalization is used to compensate for the stringent bandwidth limitation of the PD, measured around 20 MHz and push the speed up to 150 Mbps/channel. With a red light-emitting-diode (LED) array at 650 nm, the 4-channels MIMO setup DC power consumption is 1.38 W, which represents to our knowledge an energy-per-bit record performance for OOK VLC systems of 2.3 nJ/bit.
{"title":"A meter-scale 600-Mb/s 2×2 imaging MIMO OOK VLC link using commercial LEDs and Si p-n photodiode array","authors":"B. Fahs, Matthew J. Senneca, Jeffrey Chellis, Brandon Mazzara, S. Ray, J. Ghasemi, Yun Miao, P. Zarkesh-Ha, V. Koomson, M. Hella","doi":"10.1109/WOCC.2017.7928983","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7928983","url":null,"abstract":"This paper presents a free-space 4-channels imaging multiple-input multiple-output (MIMO) system for On-Off-Keying (OOK) Visible-Light-Communication (VLC) links. An aggregate data-rate of 600 Mb/s is measured over 6 meters link distance with a bit-error-rate (BER) below 10−3 with the 4-channels simultaneously modulated. While the majority of published VLC works to date use components-off-the-shelf (COTS) PIN or Avalanche PDs that require both non-standard and/or higher cost fabrication processes as well as high reverse bias potential, the presented receiver in this paper employs a 2×2 on-chip Nwell/Psub photodiodes (PD) array fabricated in a low cost CMOS-compatible process. To extract high data rate performance out of the proposed CMOS low speed PD array, a 2nd-order LCR equalization is used to compensate for the stringent bandwidth limitation of the PD, measured around 20 MHz and push the speed up to 150 Mbps/channel. With a red light-emitting-diode (LED) array at 650 nm, the 4-channels MIMO setup DC power consumption is 1.38 W, which represents to our knowledge an energy-per-bit record performance for OOK VLC systems of 2.3 nJ/bit.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88123261","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 : 2017-04-07DOI: 10.1109/WOCC.2017.7928978
Carlos Galdamez, Z. Ye
Network Function Virtualization (NFV) and Software-Defined Networking (SDN) technologies enable a fast way of deploying network services by instant initialization of virtual network functions on standardized commodity hardware, and a flexible network control and management via dynamic reconfigurations over open protocols. In particular, virtual networks from distinct tenants can be provisioned on the same physical network infrastructure to share the computing and networking resources through a process called virtual network mapping, which can lead to an efficient utilization of the underlying physical resources while guaranteeing the service isolation and performance efficiency. In the process of provisioning virtual networks, it is critically important to ensure that the virtual network services are resilient and they have the capability to continue functioning well in case of various failures such as fiber cuts, natural disasters and malicious attacks. In this paper, we study the problem of resilient virtual network mapping against large-scale regional failures, which are more challenging than existing network survivability designs in terms of single node/link failures or shared risk link group failures. We propose a novel region-disjoint mapping (RDM) algorithm which can map the primary and backup virtual networks into nonoverlapping geographical areas to survive large-scale regional failures. More specifically, the RDM algorithm adopts (1) the backtracking techniques to ensure the disjointness of the primary and backup virtual networks, and (2) the Suurballe's algorithm to jointly optimize the mapping of primary and backup virtual networks in one-step. Simulation results show that the proposed RDM algorithm achieves much lower physical network resource consumption and blocking probability.
{"title":"Resilient virtual network mapping against large-scale regional failures","authors":"Carlos Galdamez, Z. Ye","doi":"10.1109/WOCC.2017.7928978","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7928978","url":null,"abstract":"Network Function Virtualization (NFV) and Software-Defined Networking (SDN) technologies enable a fast way of deploying network services by instant initialization of virtual network functions on standardized commodity hardware, and a flexible network control and management via dynamic reconfigurations over open protocols. In particular, virtual networks from distinct tenants can be provisioned on the same physical network infrastructure to share the computing and networking resources through a process called virtual network mapping, which can lead to an efficient utilization of the underlying physical resources while guaranteeing the service isolation and performance efficiency. In the process of provisioning virtual networks, it is critically important to ensure that the virtual network services are resilient and they have the capability to continue functioning well in case of various failures such as fiber cuts, natural disasters and malicious attacks. In this paper, we study the problem of resilient virtual network mapping against large-scale regional failures, which are more challenging than existing network survivability designs in terms of single node/link failures or shared risk link group failures. We propose a novel region-disjoint mapping (RDM) algorithm which can map the primary and backup virtual networks into nonoverlapping geographical areas to survive large-scale regional failures. More specifically, the RDM algorithm adopts (1) the backtracking techniques to ensure the disjointness of the primary and backup virtual networks, and (2) the Suurballe's algorithm to jointly optimize the mapping of primary and backup virtual networks in one-step. Simulation results show that the proposed RDM algorithm achieves much lower physical network resource consumption and blocking probability.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"1 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89986011","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 : 2017-04-07DOI: 10.1109/WOCC.2017.7929002
Hayder Almosa, R. Shafin, S. Mosleh, Zhou Zhou, Yi Li, Jianzhong Zhang, Lingjia Liu
Accurate downlink channel state information at the transmitter (CSIT) is essential to utilize the benefit of 3D Massive MIMO/FD-MIMO systems. Conventional approaches to obtain CSIT for FDD MIMO systems require downlink training and CSI feedback. However, such training will cause a large overhead for 3D Massive MIMO/FD-MIMO systems because of the large dimensionality of the channel matrix. In this paper, we design an efficient downlink beamforming method based on partial CSI. By exploiting the relationship between uplink (UL) direction-of-arrivals (DoAs) and downlink (DL) direction-of-departures (DoDs), we derive an expression for estimated downlink DoDs, which will be used for downlink beamforming to compare the performance with traditional method in terms of downlink achievable rate that we derived. Simulation results also verifies that, in terms of achievable rate, our proposed method outperform the traditional beamforming method.
{"title":"Downlink channel estimation and precoding for FDD 3D Massive MIMO/FD-MIMO systems","authors":"Hayder Almosa, R. Shafin, S. Mosleh, Zhou Zhou, Yi Li, Jianzhong Zhang, Lingjia Liu","doi":"10.1109/WOCC.2017.7929002","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7929002","url":null,"abstract":"Accurate downlink channel state information at the transmitter (CSIT) is essential to utilize the benefit of 3D Massive MIMO/FD-MIMO systems. Conventional approaches to obtain CSIT for FDD MIMO systems require downlink training and CSI feedback. However, such training will cause a large overhead for 3D Massive MIMO/FD-MIMO systems because of the large dimensionality of the channel matrix. In this paper, we design an efficient downlink beamforming method based on partial CSI. By exploiting the relationship between uplink (UL) direction-of-arrivals (DoAs) and downlink (DL) direction-of-departures (DoDs), we derive an expression for estimated downlink DoDs, which will be used for downlink beamforming to compare the performance with traditional method in terms of downlink achievable rate that we derived. Simulation results also verifies that, in terms of achievable rate, our proposed method outperform the traditional beamforming method.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"25 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77642105","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 : 2017-04-07DOI: 10.1109/WOCC.2017.7928995
Lu Zhang, Lu Ge, Xin Su, Jie Zeng
In this paper, we proposed a multiple attributes handover algorithm based on fuzzy logic. The algorithm utilizes received signal strength (RSS), forecasting RSS, delay, network loads and battery utilization as parameters to design of fuzzy logic system, and the candidate network of the fuzzy logic system is reduced by the gray prediction algorithm, using fuzzy logic method processed the parameters, and then obtain the quantized value of each network parameters membership. At last calculated network performance evaluation values to make a handover decision. Meanwhile, this algorithm considered the group user types and priority. We set up simulation scenarios to test the effectiveness of the algorithm, the experimental results showed that our proposed handover scheme can reduce the handover number, ensure QoS and reduce network load.
{"title":"Fuzzy logic based vertical handover algorithm for trunking system","authors":"Lu Zhang, Lu Ge, Xin Su, Jie Zeng","doi":"10.1109/WOCC.2017.7928995","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7928995","url":null,"abstract":"In this paper, we proposed a multiple attributes handover algorithm based on fuzzy logic. The algorithm utilizes received signal strength (RSS), forecasting RSS, delay, network loads and battery utilization as parameters to design of fuzzy logic system, and the candidate network of the fuzzy logic system is reduced by the gray prediction algorithm, using fuzzy logic method processed the parameters, and then obtain the quantized value of each network parameters membership. At last calculated network performance evaluation values to make a handover decision. Meanwhile, this algorithm considered the group user types and priority. We set up simulation scenarios to test the effectiveness of the algorithm, the experimental results showed that our proposed handover scheme can reduce the handover number, ensure QoS and reduce network load.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"74 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87011691","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 : 2017-04-07DOI: 10.1109/WOCC.2017.7929005
M. Jasim, N. Ghani
Narrow beamforming solutions for millimeter wave cellular networks require mobile and base stations to exhaustively search all angular space. This scanning is mandatory in order to detect the unique optimum beamforming and combining vectors prior to control and data signaling. However exhaustive search yields large computational complexity and increases beam discovery time and control plane latency. Hence this paper presents some novel adaptive search algorithms to accelerate initial beam acquisition in sparse millimeter wave channels in non-line of sight environments. Namely the beam search is formulated as an optimization problem, and fast search procedures are presented based upon Luus Jaakola, divide and conquer, and Tabu direct pattern methods. The proposed algorithms deliver significant performance improvements versus existing beam search solutions, i.e., 25–99%.
{"title":"Adaptive initial beam search for sparse millimeter wave channels","authors":"M. Jasim, N. Ghani","doi":"10.1109/WOCC.2017.7929005","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7929005","url":null,"abstract":"Narrow beamforming solutions for millimeter wave cellular networks require mobile and base stations to exhaustively search all angular space. This scanning is mandatory in order to detect the unique optimum beamforming and combining vectors prior to control and data signaling. However exhaustive search yields large computational complexity and increases beam discovery time and control plane latency. Hence this paper presents some novel adaptive search algorithms to accelerate initial beam acquisition in sparse millimeter wave channels in non-line of sight environments. Namely the beam search is formulated as an optimization problem, and fast search procedures are presented based upon Luus Jaakola, divide and conquer, and Tabu direct pattern methods. The proposed algorithms deliver significant performance improvements versus existing beam search solutions, i.e., 25–99%.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"28 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87734999","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 : 2017-04-07DOI: 10.1109/WOCC.2017.7928970
Rajan Khullar, Z. Dong
Indoor localization through WiFi fingerprinting requires a large number of fine-grained data samples. This study presents a data acquisition and indoor localization framework that collects crowd-sourced WiFi received signal strength data in a metropolitan high-rise building and predicts location through WiFi fingerprinting. The framework consists of a server and an Android application and was tested at NYIT for data collection for two weeks in December 2016. The dataset was preprocessed and analyzed through linear support vector machine to test location prediction accuracy. Various feature selection schemes were compared for their location prediction accuracy. We show that a small subset of features suffices to provide high location prediction accuracy. The average location prediction accuracy increases from 83% to 100% when time features are considered comparing to using only spatial features.
{"title":"Indoor localization framework with WiFi fingerprinting","authors":"Rajan Khullar, Z. Dong","doi":"10.1109/WOCC.2017.7928970","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7928970","url":null,"abstract":"Indoor localization through WiFi fingerprinting requires a large number of fine-grained data samples. This study presents a data acquisition and indoor localization framework that collects crowd-sourced WiFi received signal strength data in a metropolitan high-rise building and predicts location through WiFi fingerprinting. The framework consists of a server and an Android application and was tested at NYIT for data collection for two weeks in December 2016. The dataset was preprocessed and analyzed through linear support vector machine to test location prediction accuracy. Various feature selection schemes were compared for their location prediction accuracy. We show that a small subset of features suffices to provide high location prediction accuracy. The average location prediction accuracy increases from 83% to 100% when time features are considered comparing to using only spatial features.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"11 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78299004","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 : 2017-04-07DOI: 10.1109/WOCC.2017.7928980
Rashmi Kamran, N. Thaker, Mehul Anghan, N. Nambath, Shalabh Gupta
An optimum solution for a low power and low cost coherent optical receiver design can be obtained by a self homodyne (SH) system that uses analog domain processing. An SH system eliminates the need of a local oscillator (LO) and a carrier phase recovery (CPR) module at the receiver. Due to the inherent line-width tolerance of SH systems, an expensive laser is not required at the transmitter. In digital processing based receivers, analog-to-digital converters (ADC) are the dominant source of power and cost; signal processing in the analog domain can get rid of the usage of ADCs. Combination of these two approaches can lead to a huge power and cost saving. An SH-QPSK system with a polarization multiplexed carrier is experimentally demonstrated with a 28km standard single mode fiber (SSMF) channel and off-line signal processing at the receiver side. The system does not use any optical amplification and dispersion compensating fiber. A novel analog domain constant modulus algorithm-decision feedback equalizer (CMA-DFE) is proposed which is a cascade combination of two different types of equalizers. This proposed scheme gives improvement in the performance over an optimum CMA equalizer, because of the difference of minimum mean square errors (MMSE) of two different cost functions.
{"title":"Demonstration of a polarization diversity based SH-QPSK system with CMA-DFE equalizer","authors":"Rashmi Kamran, N. Thaker, Mehul Anghan, N. Nambath, Shalabh Gupta","doi":"10.1109/WOCC.2017.7928980","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7928980","url":null,"abstract":"An optimum solution for a low power and low cost coherent optical receiver design can be obtained by a self homodyne (SH) system that uses analog domain processing. An SH system eliminates the need of a local oscillator (LO) and a carrier phase recovery (CPR) module at the receiver. Due to the inherent line-width tolerance of SH systems, an expensive laser is not required at the transmitter. In digital processing based receivers, analog-to-digital converters (ADC) are the dominant source of power and cost; signal processing in the analog domain can get rid of the usage of ADCs. Combination of these two approaches can lead to a huge power and cost saving. An SH-QPSK system with a polarization multiplexed carrier is experimentally demonstrated with a 28km standard single mode fiber (SSMF) channel and off-line signal processing at the receiver side. The system does not use any optical amplification and dispersion compensating fiber. A novel analog domain constant modulus algorithm-decision feedback equalizer (CMA-DFE) is proposed which is a cascade combination of two different types of equalizers. This proposed scheme gives improvement in the performance over an optimum CMA equalizer, because of the difference of minimum mean square errors (MMSE) of two different cost functions.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"26 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81858632","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 : 2017-04-07DOI: 10.1109/WOCC.2017.7928976
Yuanqiu Luo, Liang Zhang, N. Ansari, Bo Gao, Xiang Liu, F. Effenberger
Wavelength channel bonding coordinates multiple physical interfaces for data transmission between the Passive Optical Network (PON) central office and user side equipments. It provides a high speed logical channel to the user services, and the logical channel capacity is the sum of the rates of the bonded wavelength channels. Wavelength channel bonding gains strong support from operators in designing the next generation PONs. In this paper, we propose a channel bonding system structure for 100 Gb/s PON and depict the problem by using integer linear programming (ILP) formulation. Two heuristic algorithms are further proposed to control the bonded traffic transmission in the case of light and heavy traffic load. The algorithms schedule forward error correction (FEC) codeword (CW) transmission among four 25 Gb/s wavelength channels. Simulations have validated the performance of these algorithms, demonstrating that one algorithm provides salient control on delay, and the other increases bandwidth efficiency via threshold management.
{"title":"Wavelength channel bonding for 100 Gb/s next generation Passive Optical Networks","authors":"Yuanqiu Luo, Liang Zhang, N. Ansari, Bo Gao, Xiang Liu, F. Effenberger","doi":"10.1109/WOCC.2017.7928976","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7928976","url":null,"abstract":"Wavelength channel bonding coordinates multiple physical interfaces for data transmission between the Passive Optical Network (PON) central office and user side equipments. It provides a high speed logical channel to the user services, and the logical channel capacity is the sum of the rates of the bonded wavelength channels. Wavelength channel bonding gains strong support from operators in designing the next generation PONs. In this paper, we propose a channel bonding system structure for 100 Gb/s PON and depict the problem by using integer linear programming (ILP) formulation. Two heuristic algorithms are further proposed to control the bonded traffic transmission in the case of light and heavy traffic load. The algorithms schedule forward error correction (FEC) codeword (CW) transmission among four 25 Gb/s wavelength channels. Simulations have validated the performance of these algorithms, demonstrating that one algorithm provides salient control on delay, and the other increases bandwidth efficiency via threshold management.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"40 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86431271","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 : 2017-04-01DOI: 10.1109/WOCC.2017.7928999
Rugui Yao, Yan Gao, Juan Xu, Lukun Yao
Vandermonde-subspace frequency division multiplexing (VFDM) is a newly-proposed spectrum sharing technology, where perfect channel state information (CSI) is required. In this paper, considering complex Gaussian distributed channel estimation error, we study the interference leakage from small cell (SC) to macro cell (MC) due to imperfect CSI. The probability density function (PDF) of the upper bound of interference leakage is carefully derived. With that PDF, the distribution of the rate loss upper bound is further achieved. Simulation results are presented to validate the correctness of the theoretical derivation and to discover the impact of imperfect CSI on the performance degradation of the MC.
{"title":"Impact of channel estimation error on upper bound of rate loss for macro cell in a VFDM system","authors":"Rugui Yao, Yan Gao, Juan Xu, Lukun Yao","doi":"10.1109/WOCC.2017.7928999","DOIUrl":"https://doi.org/10.1109/WOCC.2017.7928999","url":null,"abstract":"Vandermonde-subspace frequency division multiplexing (VFDM) is a newly-proposed spectrum sharing technology, where perfect channel state information (CSI) is required. In this paper, considering complex Gaussian distributed channel estimation error, we study the interference leakage from small cell (SC) to macro cell (MC) due to imperfect CSI. The probability density function (PDF) of the upper bound of interference leakage is carefully derived. With that PDF, the distribution of the rate loss upper bound is further achieved. Simulation results are presented to validate the correctness of the theoretical derivation and to discover the impact of imperfect CSI on the performance degradation of the MC.","PeriodicalId":6471,"journal":{"name":"2017 26th Wireless and Optical Communication Conference (WOCC)","volume":"17 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85133138","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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