Pub Date : 2010-11-11DOI: 10.1109/WCSP.2010.5634039
Raied Caromi, Yan Xin, L. Lai
This paper considers the problem of how to quickly and accurately scan a multichannel spectrum to determine the availability of each channel for a secondary user in a cognitive radio network. The secondary user is able to simultaneously observe more than one channel. We consider a sequential decision setup. After taking each sample, the secondary user should decide either to stop or continue scanning. If the secondary user decides to stop scanning, it then needs to make decisions on the busy/idle status of each channel. If the secondary user decides to continue scanning, it then needs to select a subset of the channels to sense. Two scenarios are investigated. In the first scenario, there is a strict delay constraint on the scanning process. That is, the spectrum scanning needs to be completed within a certain period of time. In the second scenario, there is no strict delay constraint. That is, the spectrum scanning continues until the completion of the detection process. In both scenarios, optimal algorithms for multichannel scanning with multiple simultaneous observations are developed to minimize a cost function that strikes a balance between detection error probabilities and detection delay. Low-complexity approximation schemes are also developed to reduce the complexity of the optimal schemes. Simulation examples are provided to illustrate the effectiveness of the proposed algorithms.
{"title":"Fast multichannel spectrum scanning with multiple simultaneous observations","authors":"Raied Caromi, Yan Xin, L. Lai","doi":"10.1109/WCSP.2010.5634039","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5634039","url":null,"abstract":"This paper considers the problem of how to quickly and accurately scan a multichannel spectrum to determine the availability of each channel for a secondary user in a cognitive radio network. The secondary user is able to simultaneously observe more than one channel. We consider a sequential decision setup. After taking each sample, the secondary user should decide either to stop or continue scanning. If the secondary user decides to stop scanning, it then needs to make decisions on the busy/idle status of each channel. If the secondary user decides to continue scanning, it then needs to select a subset of the channels to sense. Two scenarios are investigated. In the first scenario, there is a strict delay constraint on the scanning process. That is, the spectrum scanning needs to be completed within a certain period of time. In the second scenario, there is no strict delay constraint. That is, the spectrum scanning continues until the completion of the detection process. In both scenarios, optimal algorithms for multichannel scanning with multiple simultaneous observations are developed to minimize a cost function that strikes a balance between detection error probabilities and detection delay. Low-complexity approximation schemes are also developed to reduce the complexity of the optimal schemes. Simulation examples are provided to illustrate the effectiveness of the proposed algorithms.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124285544","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633707
A. Ahmad-Kassem, Nathalie Mitten
Neighbour discovery and maintenance of neighbourhood tables have importance in wireless sensor networks. Almost every upper layer application such as routing or self-organizing relies on neighbourhood tables. Imprecise tables may lead to failures that may be costly in terms of resources which are very limited in such networks. Neighbourhood tables are achieved thanks to the Hello protocol. Several studies propose smart schemes to dynamically adapt the frequency of Hello messages but none of them investigates the way the refreshment period of entries in table should be adapted. In this paper, we introduce the Neighbourhood Lifetime Algorithm (NLA), the very first algorithm that adapts dynamically the refreshment period of entries in neighbourhood tables, based on the speed of node and the frequency of the Hello message. Our simulation results show and demonstrate the efficiency of NLA and its high performance to keep neighbourhood tables consistent.
{"title":"Adapting dynamically neighbourhood table entry lifetime in wireless sensor networks","authors":"A. Ahmad-Kassem, Nathalie Mitten","doi":"10.1109/WCSP.2010.5633707","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633707","url":null,"abstract":"Neighbour discovery and maintenance of neighbourhood tables have importance in wireless sensor networks. Almost every upper layer application such as routing or self-organizing relies on neighbourhood tables. Imprecise tables may lead to failures that may be costly in terms of resources which are very limited in such networks. Neighbourhood tables are achieved thanks to the Hello protocol. Several studies propose smart schemes to dynamically adapt the frequency of Hello messages but none of them investigates the way the refreshment period of entries in table should be adapted. In this paper, we introduce the Neighbourhood Lifetime Algorithm (NLA), the very first algorithm that adapts dynamically the refreshment period of entries in neighbourhood tables, based on the speed of node and the frequency of the Hello message. Our simulation results show and demonstrate the efficiency of NLA and its high performance to keep neighbourhood tables consistent.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125586765","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633447
Jinbao Zhang, Zaichen Zhang, Xiaoyan Wang, Z. Tan, Q. Guo
Rapid development of wireless communications gives prominence to simulation. Simulated methods of modeling wireless channel are of significance to wireless communications simulation on both link and system levels. There have been quite a lot of theoretical models which have accurately described the characteristics of wireless channel. However when it comes to the realization of wireless channel in simulation, there seem no accurate enough methods and conclusions. Current simulated methods are mostly built up based on TDL, which is a common framework to model micro fading and mainly focused on micro fading. As to macro fading, Doppler-effect and polarization of electromagnetic wave, this method behaves not well enough, and other statistical approximations is indispensable, such as shadow fading, Doppler power spectrum density and so on. To the question existed, this paper proposes a simulated method to accurately model wireless channel under given wireless environment, on the basis of cluster delay line. This method is highlighted with comprehensive consideration of macro and micro fading, Doppler, multi-path and polarization effect. Analysis and simulation results on characteristics of wireless channel such as signal envelope, coherent time and bandwidth, validate the proposed model.
{"title":"A simulated method of modeling wireless channel based on CDL","authors":"Jinbao Zhang, Zaichen Zhang, Xiaoyan Wang, Z. Tan, Q. Guo","doi":"10.1109/WCSP.2010.5633447","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633447","url":null,"abstract":"Rapid development of wireless communications gives prominence to simulation. Simulated methods of modeling wireless channel are of significance to wireless communications simulation on both link and system levels. There have been quite a lot of theoretical models which have accurately described the characteristics of wireless channel. However when it comes to the realization of wireless channel in simulation, there seem no accurate enough methods and conclusions. Current simulated methods are mostly built up based on TDL, which is a common framework to model micro fading and mainly focused on micro fading. As to macro fading, Doppler-effect and polarization of electromagnetic wave, this method behaves not well enough, and other statistical approximations is indispensable, such as shadow fading, Doppler power spectrum density and so on. To the question existed, this paper proposes a simulated method to accurately model wireless channel under given wireless environment, on the basis of cluster delay line. This method is highlighted with comprehensive consideration of macro and micro fading, Doppler, multi-path and polarization effect. Analysis and simulation results on characteristics of wireless channel such as signal envelope, coherent time and bandwidth, validate the proposed model.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129606633","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633485
W. Lai, Lin-Chuan Tsai
In this paper, we describe wide-band differentiators and integrators the method of bilinear transformations which exhibit almost linear phases in the pass-band region. Formulations are employed to represent discrete-time infinite impulse response (IIR) processes of first-order differentiator and integrator. These formulations allow them to be eligible for wide-band applications. The new differentiator and integrator is approximately the linear phase. The maximum error of the new differentiator and is 9.5° occurring at 0.55 of the normalized frequency, and the maximum error of the new integrator is 9.5° occurring at 0.55 of the normalized frequency.
{"title":"Approach of linear phase differentiators and integrators","authors":"W. Lai, Lin-Chuan Tsai","doi":"10.1109/WCSP.2010.5633485","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633485","url":null,"abstract":"In this paper, we describe wide-band differentiators and integrators the method of bilinear transformations which exhibit almost linear phases in the pass-band region. Formulations are employed to represent discrete-time infinite impulse response (IIR) processes of first-order differentiator and integrator. These formulations allow them to be eligible for wide-band applications. The new differentiator and integrator is approximately the linear phase. The maximum error of the new differentiator and is 9.5° occurring at 0.55 of the normalized frequency, and the maximum error of the new integrator is 9.5° occurring at 0.55 of the normalized frequency.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128625851","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5632341
Yang Liu, Zhichao Mi, Jianfeng Zhang, X. Qu
This paper analyzes the problems in the wireless network caused by using minimum hop count as its routing metric, and discusses ETX metric which invented by De Couto to solve these problems and the shortage of it in mobile environment, then modifies it by relatively counting as to make it suitable for such environment. This paper uses the new ETX as a metric for the OLSR routing protocol, and proves that its capability parameters, like throughput and average packet retransmission count etc, are better than ETX proposed by De Couto in mobile environment by software simulation.
{"title":"Improvement of ETX metric base on OLSR","authors":"Yang Liu, Zhichao Mi, Jianfeng Zhang, X. Qu","doi":"10.1109/WCSP.2010.5632341","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5632341","url":null,"abstract":"This paper analyzes the problems in the wireless network caused by using minimum hop count as its routing metric, and discusses ETX metric which invented by De Couto to solve these problems and the shortage of it in mobile environment, then modifies it by relatively counting as to make it suitable for such environment. This paper uses the new ETX as a metric for the OLSR routing protocol, and proves that its capability parameters, like throughput and average packet retransmission count etc, are better than ETX proposed by De Couto in mobile environment by software simulation.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129863240","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633441
Yingquan Zou, Chunguo Li, Luxi Yang
Distributed precoder for multicell multi-input multi-output (MEMO) networks is designed in this paper, which is implemented in a distributed manner instead of the central manner. Considering the interference can be transformed into the useful contribution, the criterion of maximizing the signal to leakage plus noise ratio (SLNR) is first introduced for the distributed precoder design. Moreover, in order to further reduce the channel state information feedback overhead, another precoder in terms of matching filter (MF) is then proposed for the distributed precoder design in multicell MIMO systems. Computer simulations have shown that the proposed precoding schemes outperform the existing method in terms of the achievable rate and the cumulative distribution function of the whole multicell MIMO system.
{"title":"Distributed precoding for multicell MIMO networks","authors":"Yingquan Zou, Chunguo Li, Luxi Yang","doi":"10.1109/WCSP.2010.5633441","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633441","url":null,"abstract":"Distributed precoder for multicell multi-input multi-output (MEMO) networks is designed in this paper, which is implemented in a distributed manner instead of the central manner. Considering the interference can be transformed into the useful contribution, the criterion of maximizing the signal to leakage plus noise ratio (SLNR) is first introduced for the distributed precoder design. Moreover, in order to further reduce the channel state information feedback overhead, another precoder in terms of matching filter (MF) is then proposed for the distributed precoder design in multicell MIMO systems. Computer simulations have shown that the proposed precoding schemes outperform the existing method in terms of the achievable rate and the cumulative distribution function of the whole multicell MIMO system.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121963460","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633579
Shengmei Zhao, Feng Gao, Xiaoliang Dong, B. Zheng
Quantum detection techniques based on multi-access quantum channel promise efficient quantum optimal solutions to quantum multi-user detection. "Discrete coherent state"(DCS) approximation method is a practical model for solving the mixed-state detection problem. Generally, the input states are pure states, while the output states are turned out to be mixed states corrupted by the noise in quantum channel. In this paper, we consider the detection scheme with DCS approximation in a quantum multiple access channel. We deduce the error probability of symbol rate of the detection algorithm with DCS detection scheme in multi-user detection fashion. By numerical simulations, we analyze and compare the performance of this detection scheme with different degree approximation. It is shown that this detection scheme is available for the quantum multi-user detection. For a normal noise, say jV=0.1, we will get the 10−3 when number of photons Ns go to 18.
{"title":"Detection scheme for quantum multiple access channel with noisy coherent state","authors":"Shengmei Zhao, Feng Gao, Xiaoliang Dong, B. Zheng","doi":"10.1109/WCSP.2010.5633579","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633579","url":null,"abstract":"Quantum detection techniques based on multi-access quantum channel promise efficient quantum optimal solutions to quantum multi-user detection. \"Discrete coherent state\"(DCS) approximation method is a practical model for solving the mixed-state detection problem. Generally, the input states are pure states, while the output states are turned out to be mixed states corrupted by the noise in quantum channel. In this paper, we consider the detection scheme with DCS approximation in a quantum multiple access channel. We deduce the error probability of symbol rate of the detection algorithm with DCS detection scheme in multi-user detection fashion. By numerical simulations, we analyze and compare the performance of this detection scheme with different degree approximation. It is shown that this detection scheme is available for the quantum multi-user detection. For a normal noise, say jV=0.1, we will get the 10−3 when number of photons Ns go to 18.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115970070","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633676
Shunqiao Sun, Jiaxi Di, Weiming Ni
We consider the power efficiency optimization problem in the cognitive radio (CR) networks under both the average packet delay constraints of each CR transmitter (CR-Tx) and the interference constraint at primary receiver (PU-Rx). We propose a cooperative approach to make each CR-Tx know the interference level at the PU-Rx when there is no central control node in the network and no assistant sensors are deployed to do the interference measuring jobs. The power control problem is proved to be a convex problem. Since the powers of CR-Tx nodes are coupled in constraints, we apply the Lagrange relaxation of the coupling constraints method and construct the subgradient iterative algorithm to solve the dual problem in a distributed way. To reduce the payload of the message exchange at each iterative process, an improved algorithm is proposed that could be implemented through Lagrange dual decomposition. Numerical results show that the two algorithms can converge very fast. When the delay constraints of CR users are not very small, it is better to apply the improved algorithm which has a good performance but with a much lower complexity.
{"title":"Distributed power control based on convex optimization in cognitive radio networks","authors":"Shunqiao Sun, Jiaxi Di, Weiming Ni","doi":"10.1109/WCSP.2010.5633676","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633676","url":null,"abstract":"We consider the power efficiency optimization problem in the cognitive radio (CR) networks under both the average packet delay constraints of each CR transmitter (CR-Tx) and the interference constraint at primary receiver (PU-Rx). We propose a cooperative approach to make each CR-Tx know the interference level at the PU-Rx when there is no central control node in the network and no assistant sensors are deployed to do the interference measuring jobs. The power control problem is proved to be a convex problem. Since the powers of CR-Tx nodes are coupled in constraints, we apply the Lagrange relaxation of the coupling constraints method and construct the subgradient iterative algorithm to solve the dual problem in a distributed way. To reduce the payload of the message exchange at each iterative process, an improved algorithm is proposed that could be implemented through Lagrange dual decomposition. Numerical results show that the two algorithms can converge very fast. When the delay constraints of CR users are not very small, it is better to apply the improved algorithm which has a good performance but with a much lower complexity.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116300914","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633313
He Yishan, Chen Yufan
This paper analyzed the single tone frequency estimation method, using pulse pairs method to simplify the iterative filtering method. Statistical analysis of this algorithm is given and simulation is carried out in the presence of additive white Gaussian noise and colored noise. Through simulation, this algorithm is shown to be able to achieve CRB asymptotically in both environment mentioned above and perform efficiently even at short data length.
{"title":"Frequency estimation method based on iterative filtering and pulse-pairs","authors":"He Yishan, Chen Yufan","doi":"10.1109/WCSP.2010.5633313","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633313","url":null,"abstract":"This paper analyzed the single tone frequency estimation method, using pulse pairs method to simplify the iterative filtering method. Statistical analysis of this algorithm is given and simulation is carried out in the presence of additive white Gaussian noise and colored noise. Through simulation, this algorithm is shown to be able to achieve CRB asymptotically in both environment mentioned above and perform efficiently even at short data length.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116528786","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633528
Clifford De Raffaele, C. J. Debono
The substantial increase in customer demand for office-like communication services during flights is pushing aircraft manufactures to implement wireless solutions inside aircraft. Nevertheless, aircraft safety is a paramount criterion for operators, thus the potential risks posed by such communication systems on aircraft equipment must be carefully assessed and respective countermeasures taken. In this work, we adopt a three-dimensional ray tracing method based on geometrical optics and combine it with electromagnetic field computation to model the interference generated by a 3G cellular system inside the cabin of a typical business jet. The model initially develops a propagation map of the electromagnetic (EM) radiation emitted by the Node B station inside the aircraft to determine the power incident on the receiving antennas of personal electronic devices (PEDs). This is used to establish the transmission power employed by each PED. Subsequently similar propagation maps are generated for each mobile device. All the radio space propagation maps are then vectorially combined to produce an EM interference map at the fuselage.
{"title":"Modeling of the electromagnetic interference map generated by 3G systems inside small aircraft","authors":"Clifford De Raffaele, C. J. Debono","doi":"10.1109/WCSP.2010.5633528","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633528","url":null,"abstract":"The substantial increase in customer demand for office-like communication services during flights is pushing aircraft manufactures to implement wireless solutions inside aircraft. Nevertheless, aircraft safety is a paramount criterion for operators, thus the potential risks posed by such communication systems on aircraft equipment must be carefully assessed and respective countermeasures taken. In this work, we adopt a three-dimensional ray tracing method based on geometrical optics and combine it with electromagnetic field computation to model the interference generated by a 3G cellular system inside the cabin of a typical business jet. The model initially develops a propagation map of the electromagnetic (EM) radiation emitted by the Node B station inside the aircraft to determine the power incident on the receiving antennas of personal electronic devices (PEDs). This is used to establish the transmission power employed by each PED. Subsequently similar propagation maps are generated for each mobile device. All the radio space propagation maps are then vectorially combined to produce an EM interference map at the fuselage.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126901698","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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