As an important part of the emergency rescue system, Wearable Wireless Sensor Network (WWSN) has developed rapidly which can realize accurate, efficient and stable data transmission among users. In this paper, considering frequent changing topology of body-to-body network, a Robust Routing Algorithm Based on Link comprehensive Stability in Body-to-Body Network (RRLS) was proposed. The RRLS algorithm includes two parts: route discovery and route maintenance. In the process of route discovery, considering the moving speed and direction of nodes, the optimal route is selected using the designed link comprehensive stability parameter. Frequent human movement will cause link breakage. Therefore, we adopt the route maintenance scheme to repair the link in time. The simulation results show that the RRLS algorithm proposed in this paper has good performance in terms of delay, packet loss rate and energy consumption.
{"title":"Body-to-Body Network Routing Algorithm Based on Link Comprehensive Stability","authors":"Lincong Zhang, Xueyi Chen, Kefeng Wei, Wenbo Zhang, Yongxin Feng","doi":"10.1109/WOCC.2019.8770563","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770563","url":null,"abstract":"As an important part of the emergency rescue system, Wearable Wireless Sensor Network (WWSN) has developed rapidly which can realize accurate, efficient and stable data transmission among users. In this paper, considering frequent changing topology of body-to-body network, a Robust Routing Algorithm Based on Link comprehensive Stability in Body-to-Body Network (RRLS) was proposed. The RRLS algorithm includes two parts: route discovery and route maintenance. In the process of route discovery, considering the moving speed and direction of nodes, the optimal route is selected using the designed link comprehensive stability parameter. Frequent human movement will cause link breakage. Therefore, we adopt the route maintenance scheme to repair the link in time. The simulation results show that the RRLS algorithm proposed in this paper has good performance in terms of delay, packet loss rate and energy consumption.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127978737","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770552
Ruofei Gao, Jianqiang Xue, Wendong Xiao, Baoyong Zhao, Sen Zhang
A bstract-Device-free localization is a new and developing technology which estimates an object's locations without requiring it to equip any devices. Channel State Information (CSI), containing more fine-grained information than Received Signal Strength Indication (RSSI), is a natural candidate for localization application and has been studied in many works. Extreme Learning Machine (ELM) is a fast and robust algorithm, but it has only one hidden layer, which limits its capacity. One of the most popular ways of improving accuracy is to use multiple different models to obtain better predictive performance. In this paper, we propose a device-free localization approach using an ensemble of ELMs in which each ELM has the same number of hidden nodes. The proposed approach models the localization task as a regression problem. First, we leverage a modified driver to collect CSI and extract phase information. The Principal Component Analysis (PCA) is then applied to reduce the dimensionality of the phase features. After that, the processed features are fed into an ensemble of ELMs to output their respective predictions. The final prediction is an average combination of them. We conducted experiments in a typical indoor environment to verify its performance, and the results demonstrated the effectiveness of our approach and of CSI.
{"title":"Extreme Learning Machine Ensemble for CSI based Device-free Indoor Localization","authors":"Ruofei Gao, Jianqiang Xue, Wendong Xiao, Baoyong Zhao, Sen Zhang","doi":"10.1109/WOCC.2019.8770552","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770552","url":null,"abstract":"A bstract-Device-free localization is a new and developing technology which estimates an object's locations without requiring it to equip any devices. Channel State Information (CSI), containing more fine-grained information than Received Signal Strength Indication (RSSI), is a natural candidate for localization application and has been studied in many works. Extreme Learning Machine (ELM) is a fast and robust algorithm, but it has only one hidden layer, which limits its capacity. One of the most popular ways of improving accuracy is to use multiple different models to obtain better predictive performance. In this paper, we propose a device-free localization approach using an ensemble of ELMs in which each ELM has the same number of hidden nodes. The proposed approach models the localization task as a regression problem. First, we leverage a modified driver to collect CSI and extract phase information. The Principal Component Analysis (PCA) is then applied to reduce the dimensionality of the phase features. After that, the processed features are fed into an ensemble of ELMs to output their respective predictions. The final prediction is an average combination of them. We conducted experiments in a typical indoor environment to verify its performance, and the results demonstrated the effectiveness of our approach and of CSI.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126076784","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770565
Xiaoling Liu, Jingwen Zhang, Cong Yu, Lingqi Luo, J. Shen
A Multi-Domain Awareness Routing algorithm is proposed to reduce the energy consumption in elastic optical networks. By adopting the fragmentation metrics both of the spectrum domain and spatial domain, the blocking probability of elastic optical networks can be reduced. When new services arrive, they are prioritized to work on existing links to reduce new optical paths and working network components. Then the holding time of existing services is fully considered in order to select the candidate route with a shorter working time and thus improve energy consumption. The simulation results show that the proposed algorithm can effectively reduce the network energy consumption and hence, result in overall lower connection blocking probability.
{"title":"Multi-domain Awareness Energy-efficient Routing Algorithm for Elastic Optical Networks","authors":"Xiaoling Liu, Jingwen Zhang, Cong Yu, Lingqi Luo, J. Shen","doi":"10.1109/WOCC.2019.8770565","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770565","url":null,"abstract":"A Multi-Domain Awareness Routing algorithm is proposed to reduce the energy consumption in elastic optical networks. By adopting the fragmentation metrics both of the spectrum domain and spatial domain, the blocking probability of elastic optical networks can be reduced. When new services arrive, they are prioritized to work on existing links to reduce new optical paths and working network components. Then the holding time of existing services is fully considered in order to select the candidate route with a shorter working time and thus improve energy consumption. The simulation results show that the proposed algorithm can effectively reduce the network energy consumption and hence, result in overall lower connection blocking probability.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116766230","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770617
Yuan Yao, Xinyi Wang, Deliang Song
As 5G is becoming more commercialized, quick test of terminals also becomes necessary. The non-signaling test can reduce the test time by eliminating the establishment of the synchronization channel, so the slot number detection and synchronization needs to be completed before the non-signaling test. In this paper, based on the 5G frame structure and pilot signal characteristics, we introduce two common synchronization methods and analyze their advantages and disadvantages. Furthermore, we propose a new joint method to deal with the complex conditions in practical test. The simulation results show that the proposed method can effectively improve the time efficiency and optimize the test accuracy.
{"title":"Joint Slot Number Detection and Synchronization for 5G Non-signaling Test","authors":"Yuan Yao, Xinyi Wang, Deliang Song","doi":"10.1109/WOCC.2019.8770617","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770617","url":null,"abstract":"As 5G is becoming more commercialized, quick test of terminals also becomes necessary. The non-signaling test can reduce the test time by eliminating the establishment of the synchronization channel, so the slot number detection and synchronization needs to be completed before the non-signaling test. In this paper, based on the 5G frame structure and pilot signal characteristics, we introduce two common synchronization methods and analyze their advantages and disadvantages. Furthermore, we propose a new joint method to deal with the complex conditions in practical test. The simulation results show that the proposed method can effectively improve the time efficiency and optimize the test accuracy.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128605687","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770690
Jingwen Zhang, Jingxuan Huang, Ce Sun, Dai Jia, Xinyi Wang, Zesong Fei
Aiming at reducing unnecessary packet losses of transport block (TB) level hybrid automatic repeat request (HARQ), we propose a connected-coding retransmission (CCR) scheme for low-density parity-check (LDPC) codes in 5G data channels. Once the transmission of a TB, which is divided into one or several code blocks (CBs), was failed, we introduce failed CBs information into the parity bits of the new CBs by connected encoding. Then error correction for the failed CBs is achieved again by connected decoding to avoid packet losses. The simulation results in fading channel demonstrate that the proposed scheme efficiently improves both CB error rate performances and system throughput performances.
{"title":"Connected-coding Retransmission Scheme for Low-density Parity-check Codes in 5G","authors":"Jingwen Zhang, Jingxuan Huang, Ce Sun, Dai Jia, Xinyi Wang, Zesong Fei","doi":"10.1109/WOCC.2019.8770690","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770690","url":null,"abstract":"Aiming at reducing unnecessary packet losses of transport block (TB) level hybrid automatic repeat request (HARQ), we propose a connected-coding retransmission (CCR) scheme for low-density parity-check (LDPC) codes in 5G data channels. Once the transmission of a TB, which is divided into one or several code blocks (CBs), was failed, we introduce failed CBs information into the parity bits of the new CBs by connected encoding. Then error correction for the failed CBs is achieved again by connected decoding to avoid packet losses. The simulation results in fading channel demonstrate that the proposed scheme efficiently improves both CB error rate performances and system throughput performances.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128650403","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770583
Hua Li, Yuanyuan Dong, Zhenyu Zhang, Xiyuan Wang, Xiaoming Dai
The discrete Fourier transform (DFT) based channel estimation has been widely used in multiple wireless orthogonal frequency division multiplexing (OFDM) system owing to the good performance-complexity trade-off. However, in practical multipath channels with non-sample-spaced path delay, this method suffers significant performance loss caused by energy leakage. In this paper, we use a mirror extension DFT (ME-DFT) algorithm by extending channel frequency response (CFR) on border subcarriers of the least squares (LS) channel estimation to mitigate the leakage effect. The length of the extended CFR fulfills the power of two to facilitate efficient fast Fourier transform (FFT) implementation. Simulation results shows that the ME-DFT based method exhibits superior energy concentration property and implementation efficiency as compared to the traditional DFT-based method.
{"title":"A Low Complexity Channel Estimator for LTE Uplink in Non-sample-spaced Multipath Channels","authors":"Hua Li, Yuanyuan Dong, Zhenyu Zhang, Xiyuan Wang, Xiaoming Dai","doi":"10.1109/WOCC.2019.8770583","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770583","url":null,"abstract":"The discrete Fourier transform (DFT) based channel estimation has been widely used in multiple wireless orthogonal frequency division multiplexing (OFDM) system owing to the good performance-complexity trade-off. However, in practical multipath channels with non-sample-spaced path delay, this method suffers significant performance loss caused by energy leakage. In this paper, we use a mirror extension DFT (ME-DFT) algorithm by extending channel frequency response (CFR) on border subcarriers of the least squares (LS) channel estimation to mitigate the leakage effect. The length of the extended CFR fulfills the power of two to facilitate efficient fast Fourier transform (FFT) implementation. Simulation results shows that the ME-DFT based method exhibits superior energy concentration property and implementation efficiency as compared to the traditional DFT-based method.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125887112","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770587
Muhammad Khalid Riaz, Yangyu Fan, I. Akhtar
Due to the absence of the central administrator and the dynamic network topology of the Mobile Ad-hoc Networks (MANETS), trust management is a major issue for designing the routing protocols of the network. In this paper, to identify the malicious nodes in the ad-hoc network, a trust inference model based on recommendations is proposed. This multidimensional model is aware of the energy, the channel and history of the interactions between the nodes. The proposed trust model evaluates trust by using two main components: the direct interaction trust (Primary trust) calculated using the Bayesian statistical method and recommendations from the neighbors (secondary trust). The metrics used for calculating the primary trust are: the received signal strength, time of the each interaction, the intimacy of nodes and the frequency of interactions. This trust inference model is implemented on top of the conventional Dynamic Source Routing (DSR) protocol. The results of the simulations affirms that the proposed model enhance effectiveness of routing in existence of malicious peers in the MANETs.
{"title":"A Multidimensional Trust Inference Model for the Mobile Ad-Hoc Networks","authors":"Muhammad Khalid Riaz, Yangyu Fan, I. Akhtar","doi":"10.1109/WOCC.2019.8770587","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770587","url":null,"abstract":"Due to the absence of the central administrator and the dynamic network topology of the Mobile Ad-hoc Networks (MANETS), trust management is a major issue for designing the routing protocols of the network. In this paper, to identify the malicious nodes in the ad-hoc network, a trust inference model based on recommendations is proposed. This multidimensional model is aware of the energy, the channel and history of the interactions between the nodes. The proposed trust model evaluates trust by using two main components: the direct interaction trust (Primary trust) calculated using the Bayesian statistical method and recommendations from the neighbors (secondary trust). The metrics used for calculating the primary trust are: the received signal strength, time of the each interaction, the intimacy of nodes and the frequency of interactions. This trust inference model is implemented on top of the conventional Dynamic Source Routing (DSR) protocol. The results of the simulations affirms that the proposed model enhance effectiveness of routing in existence of malicious peers in the MANETs.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"22 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120851505","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770592
Xiangling Li, W. Feng, Yunfei Chen, Chengxiang Wang, N. Ge
Despite of constantly-developing satellites and terrestrial fifth generation (5G) communications, there is still a large gap for maritime broadband coverage. In this paper, we explore the potential gain of unmanned aerial vehicles (UAVs) for maritime communications. A hybrid satellite-UAV-terrestrial network is considered, where the UAV is employed to offer an accompanying coverage for mobile ships. We optimize both the trajectory and transmit power of UAV to maximize the minimum of ship's achievable rate. Different from previous studies, we consider a typical composite channel model containing both large-scale and small-scale fading, to cope with the practical propagation environment. Moreover, we assume only the large-scale channel state information (CSI) is known for optimization, because the dynamic small-scale fading cannot be obtained before UAV's flight, whereas the large-scale CSI can be estimated according to the position information of ships. Under this context, an optimization problem is formulated, subject to constraints on UAV's kinematics and communication limitation. We solve the problem which is proved to be non-convex by problem decomposition, successive convex optimization and bisection searching tools. Simulation results have corroborated the superiority of the proposed accompanying coverage of UAV.
{"title":"UAV-Enabled Accompanying Coverage for Hybrid Satellite-Uav-Terrestrial Maritime Communications","authors":"Xiangling Li, W. Feng, Yunfei Chen, Chengxiang Wang, N. Ge","doi":"10.1109/WOCC.2019.8770592","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770592","url":null,"abstract":"Despite of constantly-developing satellites and terrestrial fifth generation (5G) communications, there is still a large gap for maritime broadband coverage. In this paper, we explore the potential gain of unmanned aerial vehicles (UAVs) for maritime communications. A hybrid satellite-UAV-terrestrial network is considered, where the UAV is employed to offer an accompanying coverage for mobile ships. We optimize both the trajectory and transmit power of UAV to maximize the minimum of ship's achievable rate. Different from previous studies, we consider a typical composite channel model containing both large-scale and small-scale fading, to cope with the practical propagation environment. Moreover, we assume only the large-scale channel state information (CSI) is known for optimization, because the dynamic small-scale fading cannot be obtained before UAV's flight, whereas the large-scale CSI can be estimated according to the position information of ships. Under this context, an optimization problem is formulated, subject to constraints on UAV's kinematics and communication limitation. We solve the problem which is proved to be non-convex by problem decomposition, successive convex optimization and bisection searching tools. Simulation results have corroborated the superiority of the proposed accompanying coverage of UAV.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129046991","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770576
Xiaopeng Wang, Letian Li, Wuyang Zhou
The high-altitude platform station (HAPS) communication system has its unique advantages such as flexible deployment and large coverage. It can be widely used in a variety of communication scenarios in the future and has attracted the attention of researchers from various countries. Under the influence of stratospheric wind, HAPS will inevitably move within a certain range. In this paper, we discuss vertical movement and swing movement, which are affected by path loss. First, we establish a more realistic ground coverage model and derive its calculation formulas. Then, based on this model, we analyze the coverage and calculate the handover probability of two movement modes. Finally, extensive simulations are implanted to verify our analyses. The results show that the HAPS coverage area is mainly affected by the path loss. Moreover, the swing movement has greater influence on the handover probability than the vertical movement.
{"title":"The Effect of HAPS Unstable Movement on Handover Performance","authors":"Xiaopeng Wang, Letian Li, Wuyang Zhou","doi":"10.1109/WOCC.2019.8770576","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770576","url":null,"abstract":"The high-altitude platform station (HAPS) communication system has its unique advantages such as flexible deployment and large coverage. It can be widely used in a variety of communication scenarios in the future and has attracted the attention of researchers from various countries. Under the influence of stratospheric wind, HAPS will inevitably move within a certain range. In this paper, we discuss vertical movement and swing movement, which are affected by path loss. First, we establish a more realistic ground coverage model and derive its calculation formulas. Then, based on this model, we analyze the coverage and calculate the handover probability of two movement modes. Finally, extensive simulations are implanted to verify our analyses. The results show that the HAPS coverage area is mainly affected by the path loss. Moreover, the swing movement has greater influence on the handover probability than the vertical movement.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124849593","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770561
Ling Jingjing, Li Yu
ΣΔbeam space-time adaptive processing (ΣΔ-STAP) is an effective clutter suppression technique for airborne radar. As one kind of ΣΔ-STAP, ΣΔ-3DT has good performance of clutter suppression and detection of slow moving targets. However, because of high demand for training samples and heavy computation load, ΣΔ-3DT faces many challenges in real-time applications. Aiming at these problems, this paper proposes a method on design and implementation of ΣΔ-3DT based on multi-core DSP. This method adopts idea of subsection processing, that is to say, utilizing multi-core characteristic, radar data are divided into several subsections and are distributed to different cores for parallel processing. Moreover, the sample covariance matrix is optimized in the course of processing to decrease computation. Finally, a test based on experimental data is taken to prove the method's feasibility. The results show that this method can reduce computing complexity, shorten processing time, own high practicability, and satisfy the real-time requirements of system.
{"title":"Design and Implementation of ΣΔ-3DT Based on Multi-Core DSP","authors":"Ling Jingjing, Li Yu","doi":"10.1109/WOCC.2019.8770561","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770561","url":null,"abstract":"ΣΔbeam space-time adaptive processing (ΣΔ-STAP) is an effective clutter suppression technique for airborne radar. As one kind of ΣΔ-STAP, ΣΔ-3DT has good performance of clutter suppression and detection of slow moving targets. However, because of high demand for training samples and heavy computation load, ΣΔ-3DT faces many challenges in real-time applications. Aiming at these problems, this paper proposes a method on design and implementation of ΣΔ-3DT based on multi-core DSP. This method adopts idea of subsection processing, that is to say, utilizing multi-core characteristic, radar data are divided into several subsections and are distributed to different cores for parallel processing. Moreover, the sample covariance matrix is optimized in the course of processing to decrease computation. Finally, a test based on experimental data is taken to prove the method's feasibility. The results show that this method can reduce computing complexity, shorten processing time, own high practicability, and satisfy the real-time requirements of system.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115509269","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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