Pub Date : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631711
Nargess Ghassempour, J. Zou, Yaping He
A fire detection framework based on image processing is presented in this paper. The proposed framework incorporates Scale-Invariant Feature Transform (SIFT) features and applies it in a novel way for use in fire detection by taking advantage of SIFT's ability to learn and adapt itself with various datasets. The framework was connected to a number of clusters and classifiers and was trained and tested with several fire and non fire image datasets. The performance of two classifiers in terms of the accuracy and sensitivity was examined and a comparison between the proposed framework and an existing image processing fire detection method has been presented. The experimental results, using the Support Vector Machine (SVM) classification, show that the proposed framework using SIFT features performs well and can achieve an accuracy of 94.7%.
{"title":"A SIFT-Based Forest Fire Detection Framework Using Static Images","authors":"Nargess Ghassempour, J. Zou, Yaping He","doi":"10.1109/ICSPCS.2018.8631711","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631711","url":null,"abstract":"A fire detection framework based on image processing is presented in this paper. The proposed framework incorporates Scale-Invariant Feature Transform (SIFT) features and applies it in a novel way for use in fire detection by taking advantage of SIFT's ability to learn and adapt itself with various datasets. The framework was connected to a number of clusters and classifiers and was trained and tested with several fire and non fire image datasets. The performance of two classifiers in terms of the accuracy and sensitivity was examined and a comparison between the proposed framework and an existing image processing fire detection method has been presented. The experimental results, using the Support Vector Machine (SVM) classification, show that the proposed framework using SIFT features performs well and can achieve an accuracy of 94.7%.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131574765","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631713
T. Chu, H. Zepernick, V. Sundstedt
In this paper, we conduct an analysis of variance (ANOVA) on opinion scores for MPEG-4 scalable video coding (SVC) and advanced video coding (AVC) standards. This work resorts on a publicly available database providing opinion scores from subjective experiments for several scenarios such as different bit rates and resolutions. In particular, ANOVA is used for statistical hypothesis testing to compare two or more sets of opinion scores instead of being constrained to pairs of sets of opinion scores as would be the case for t-tests. As the ANOVA tests of the different scenarios are performed for mean opinion scores (MOS), box plots are also provided in order to assess the distribution of the opinion scores around the median. It is shown that the opinion scores given to the reference videos in SVC and AV C for different resolutions are statistically significantly similar regardless of the content. Further, for the opinion scores of the considered database, the ANOVA tests support the hypothesis that AVC generally outperforms SVC although the performance difference may be less pronounced for higher bit rates. This work also shows that additional insights on the results of subjective experiments can be obtained by extending the analysis of opinion scores beyond MOS to ANOVA tests and box plots.
{"title":"Analysis of Variance of Opinion Scores for MPEG-4 Scalable and Advanced Video Coding","authors":"T. Chu, H. Zepernick, V. Sundstedt","doi":"10.1109/ICSPCS.2018.8631713","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631713","url":null,"abstract":"In this paper, we conduct an analysis of variance (ANOVA) on opinion scores for MPEG-4 scalable video coding (SVC) and advanced video coding (AVC) standards. This work resorts on a publicly available database providing opinion scores from subjective experiments for several scenarios such as different bit rates and resolutions. In particular, ANOVA is used for statistical hypothesis testing to compare two or more sets of opinion scores instead of being constrained to pairs of sets of opinion scores as would be the case for t-tests. As the ANOVA tests of the different scenarios are performed for mean opinion scores (MOS), box plots are also provided in order to assess the distribution of the opinion scores around the median. It is shown that the opinion scores given to the reference videos in SVC and AV C for different resolutions are statistically significantly similar regardless of the content. Further, for the opinion scores of the considered database, the ANOVA tests support the hypothesis that AVC generally outperforms SVC although the performance difference may be less pronounced for higher bit rates. This work also shows that additional insights on the results of subjective experiments can be obtained by extending the analysis of opinion scores beyond MOS to ANOVA tests and box plots.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115919665","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631771
Yuto Masuda, M. Inamori
Direct conversion is a scheme of directly converting an RF signal into a baseband signal without passing through an intermediate frequency. Since a circuit for converting to an intermediate frequency is unnecessary, the circuit configuration can be simplified. However, this receiver has the problem of IQ imbalance, which is mainly due to the mismatch of the elements between I phase and the Q phase. The phase mismatch occurs when the phase difference is not exactly 90 degrees and the gain mismatch occurs due to the difference in the gain of the I phase and the Q phase of LO signal. In this paper, IQ imbalance compensation scheme is proposed. The proposed scheme compensates the IQ imbalance using pilot signals and the weighting factor with simple computational complexity. In this research, the proposed scheme is evaluated through numerical simulations. Simulation results show that the bit error rate performance is improved even in the presence of IQ imbalance.
{"title":"IQ Imbalance Estimation Scheme with Weighting Factor in OFDM Direct Conversion Receivers","authors":"Yuto Masuda, M. Inamori","doi":"10.1109/ICSPCS.2018.8631771","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631771","url":null,"abstract":"Direct conversion is a scheme of directly converting an RF signal into a baseband signal without passing through an intermediate frequency. Since a circuit for converting to an intermediate frequency is unnecessary, the circuit configuration can be simplified. However, this receiver has the problem of IQ imbalance, which is mainly due to the mismatch of the elements between I phase and the Q phase. The phase mismatch occurs when the phase difference is not exactly 90 degrees and the gain mismatch occurs due to the difference in the gain of the I phase and the Q phase of LO signal. In this paper, IQ imbalance compensation scheme is proposed. The proposed scheme compensates the IQ imbalance using pilot signals and the weighting factor with simple computational complexity. In this research, the proposed scheme is evaluated through numerical simulations. Simulation results show that the bit error rate performance is improved even in the presence of IQ imbalance.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122233005","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631729
Liya Liang, Xiaojian Xu
Accurate measurement of low radar cross section (RCS) requires exact extraction and subtraction of the background clutter. In this work, a novel approach based on a newly proposed multipurpose calibrator [1] used as an ancillary test body for background extraction is developed, which is applicable to RCS ranges where a metal pylon is used as the target support. According to the theoretical analysis and mathematical derivation, an optimized fitting of two concentric circles is proposed for more accurate estimation of background clutter by using the measured data of the new RCS calibrator. Experimental results are presented to demonstrate the usefulness of the proposed approach.
{"title":"Background Extraction Based on a New Calibrator in Radar Cross Section Measurements","authors":"Liya Liang, Xiaojian Xu","doi":"10.1109/ICSPCS.2018.8631729","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631729","url":null,"abstract":"Accurate measurement of low radar cross section (RCS) requires exact extraction and subtraction of the background clutter. In this work, a novel approach based on a newly proposed multipurpose calibrator [1] used as an ancillary test body for background extraction is developed, which is applicable to RCS ranges where a metal pylon is used as the target support. According to the theoretical analysis and mathematical derivation, an optimized fitting of two concentric circles is proposed for more accurate estimation of background clutter by using the measured data of the new RCS calibrator. Experimental results are presented to demonstrate the usefulness of the proposed approach.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128641225","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631715
D. Tran, H. Zepernick, T. Chu
Mobile services have seen a shift from voice services toward visual stimuli-based services ranging from mobile imaging over mobile gaming to upcoming mobile extended reality applications. In this paper, given the increased resolutions of the related mobile multimedia formats, we propose and examine positioning strategies for light-weight data hiding of secret images in moderately significant bits of high-definition (HD) cover images. Apart from linear and random positioning, visual attention mechanisms of the human visual system are addressed by separately utilizing either the background or center of the HD cover image for data hiding. A performance assessment of these positioning strategies is conducted in terms of the peak-signal-to-noise ratio (PSNR), structural similarity (SSIM) index, and visual information fidelity (VIF). It is shown that HD cover images indeed can carry more than a single secret image until noticeable quality loss is observed. Further, it is revealed that linear positioning of secret images in the whole, background, or center of HD cover images outperforms random positioning. As for the utilized performance metrics, it has been observed that PSNR cannot differentiate among the positioning strategies as it measures pixel-by-pixel differences and hence removes the impact of the position of the hidden data. As for the two quality metrics, compared to the SSIM index, VIF is found to stronger differentiate among the performance of the considered positioning strategies.
{"title":"On the Positioning of Moderately Significant Bit Data Hiding in High-Definition Images","authors":"D. Tran, H. Zepernick, T. Chu","doi":"10.1109/ICSPCS.2018.8631715","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631715","url":null,"abstract":"Mobile services have seen a shift from voice services toward visual stimuli-based services ranging from mobile imaging over mobile gaming to upcoming mobile extended reality applications. In this paper, given the increased resolutions of the related mobile multimedia formats, we propose and examine positioning strategies for light-weight data hiding of secret images in moderately significant bits of high-definition (HD) cover images. Apart from linear and random positioning, visual attention mechanisms of the human visual system are addressed by separately utilizing either the background or center of the HD cover image for data hiding. A performance assessment of these positioning strategies is conducted in terms of the peak-signal-to-noise ratio (PSNR), structural similarity (SSIM) index, and visual information fidelity (VIF). It is shown that HD cover images indeed can carry more than a single secret image until noticeable quality loss is observed. Further, it is revealed that linear positioning of secret images in the whole, background, or center of HD cover images outperforms random positioning. As for the utilized performance metrics, it has been observed that PSNR cannot differentiate among the positioning strategies as it measures pixel-by-pixel differences and hence removes the impact of the position of the hidden data. As for the two quality metrics, compared to the SSIM index, VIF is found to stronger differentiate among the performance of the considered positioning strategies.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125613286","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631719
J. Lewandowsky, G. Bauch, M. Tschauner, Peter Oppermann
The Information Bottleneck method allows to construct information-optimum message passing decoders for low-density parity-check codes. In such decoders lookup tables replace the classical node operations of the variable and the check nodes. These lookup tables are designed using the Information Bottleneck principle of maximizing the relevant information. Unlike state-of-the-art decoders which use real valued log-likelihood ratios for decoding, the considered decoders do not process any real values, but only quantization indices. Nevertheless, they have performance extremely close to belief propagation decoding. Since hardware representation of unsigned integers is efficient and lookup table implementations have low complexity, it is reasonable to assume that the designed decoders offer advantages over their conventional counterparts in practice. In this paper, we evaluate, quantify and discuss these advantages in a practical experiment. Our focus lies on a software defined radio application, where the channel decoder is implemented on a digital signal processor. We present several implementations of the considered decoders and compare them with state-of-the-art decoders. Our results show considerable gains of the Information Bottleneck decoders in terms of bit error rate performance and net decoding throughput.
{"title":"Design and Evaluation of Information Bottleneck LDPC Decoders for Software Defined Radios","authors":"J. Lewandowsky, G. Bauch, M. Tschauner, Peter Oppermann","doi":"10.1109/ICSPCS.2018.8631719","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631719","url":null,"abstract":"The Information Bottleneck method allows to construct information-optimum message passing decoders for low-density parity-check codes. In such decoders lookup tables replace the classical node operations of the variable and the check nodes. These lookup tables are designed using the Information Bottleneck principle of maximizing the relevant information. Unlike state-of-the-art decoders which use real valued log-likelihood ratios for decoding, the considered decoders do not process any real values, but only quantization indices. Nevertheless, they have performance extremely close to belief propagation decoding. Since hardware representation of unsigned integers is efficient and lookup table implementations have low complexity, it is reasonable to assume that the designed decoders offer advantages over their conventional counterparts in practice. In this paper, we evaluate, quantify and discuss these advantages in a practical experiment. Our focus lies on a software defined radio application, where the channel decoder is implemented on a digital signal processor. We present several implementations of the considered decoders and compare them with state-of-the-art decoders. Our results show considerable gains of the Information Bottleneck decoders in terms of bit error rate performance and net decoding throughput.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132367893","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631744
Sunpreet Sharma, J. Zou, G. Fang
Dithering creates an illusion of continuous tone output for a binary device. Error diffusion-based dithering or halftoning is an efficient technique that is primarily getting used in printing. In this paper error diffusion halftoning has been used to achieve image dithering based on complex wavelets. Similar to the wavelet-based dithering, Floyd-Steinberg error diffusion has been incorporated, but in addition a new set of sub band amplification factors is coined in the proposed method to further enhance the contrast in a dithered image. Experimental results show that the proposed method is superior to state-of-the-art methods in terms of subjective and objective assessments.
{"title":"Contrast Enhancement of Dithered Images Using Complex Wavelets and Novel Amplification Factors","authors":"Sunpreet Sharma, J. Zou, G. Fang","doi":"10.1109/ICSPCS.2018.8631744","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631744","url":null,"abstract":"Dithering creates an illusion of continuous tone output for a binary device. Error diffusion-based dithering or halftoning is an efficient technique that is primarily getting used in printing. In this paper error diffusion halftoning has been used to achieve image dithering based on complex wavelets. Similar to the wavelet-based dithering, Floyd-Steinberg error diffusion has been incorporated, but in addition a new set of sub band amplification factors is coined in the proposed method to further enhance the contrast in a dithered image. Experimental results show that the proposed method is superior to state-of-the-art methods in terms of subjective and objective assessments.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133333645","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631736
S. Lord, J. Roth, J. McEachen, M. Tummala
The channel response between a wireless transmitter node and a receiver node changes as the nodes move and the environment changes. Recent studies have suggested several approaches to leverage such changes in channel response as an attribute for authenticating a communication node's claimed identity. We propose a specular reflector mapping approach to enable authentication of a communication node's reported location by comparing measured transmission channel characteristics to those expected for emissions from the reported location. This work focuses on how a specular reflecting plane can be estimated from the multipath time delay measurements over multiple transmitter positions presenting theoretical limits to estimating such a reflecting plane. Additionally, we provide a brief example to illustrate the value such a reflecting plane can bring in regards to authenticating a transmission's claimed position of origin.
{"title":"A Novel Method for Physical-Layer Authentication via Channel State Information","authors":"S. Lord, J. Roth, J. McEachen, M. Tummala","doi":"10.1109/ICSPCS.2018.8631736","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631736","url":null,"abstract":"The channel response between a wireless transmitter node and a receiver node changes as the nodes move and the environment changes. Recent studies have suggested several approaches to leverage such changes in channel response as an attribute for authenticating a communication node's claimed identity. We propose a specular reflector mapping approach to enable authentication of a communication node's reported location by comparing measured transmission channel characteristics to those expected for emissions from the reported location. This work focuses on how a specular reflecting plane can be estimated from the multipath time delay measurements over multiple transmitter positions presenting theoretical limits to estimating such a reflecting plane. Additionally, we provide a brief example to illustrate the value such a reflecting plane can bring in regards to authenticating a transmission's claimed position of origin.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131741756","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631782
A. Mori, Assyfa Ariffin, H. Chung, M. Inamori
Internet of Things (IoT) plays an important role in managing the information between the systems and sensors installed in the electronic devices. Since some of these sensors are stationed in areas that are difficult to access, the application of Wireless Power Transmission (WPT) is implemented in the charging system. In this system, the power and data are transmitted at a certain time interval. However, the shifting time causes the interference which affected the data signal. In order to eliminate the influence of interference on the data signal, we conduct this study. To realizes this objective, we introduce two approaches which are rearranging the data subcarriers and using high pass filter. Through these methods, it is found that the BER characteristics are improved. Even so, due to nullification of some data subcarriers in the rearrangement method, the data rate decreases. Hence, in terms of data rate speed the application of HPF is proven to be more preferable.
{"title":"Interference Elimination Scheme of Wireless Power Transmission for IEEE 802.11 ah","authors":"A. Mori, Assyfa Ariffin, H. Chung, M. Inamori","doi":"10.1109/ICSPCS.2018.8631782","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631782","url":null,"abstract":"Internet of Things (IoT) plays an important role in managing the information between the systems and sensors installed in the electronic devices. Since some of these sensors are stationed in areas that are difficult to access, the application of Wireless Power Transmission (WPT) is implemented in the charging system. In this system, the power and data are transmitted at a certain time interval. However, the shifting time causes the interference which affected the data signal. In order to eliminate the influence of interference on the data signal, we conduct this study. To realizes this objective, we introduce two approaches which are rearranging the data subcarriers and using high pass filter. Through these methods, it is found that the BER characteristics are improved. Even so, due to nullification of some data subcarriers in the rearrangement method, the data rate decreases. Hence, in terms of data rate speed the application of HPF is proven to be more preferable.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134041654","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 : 2018-12-01DOI: 10.1109/ICSPCS.2018.8631751
Simon Faulkner, Simon Herfurth, T. Lamahewa, S. D. Elton
This paper describes the design and implementation of a reconfigurable, software-defined synthesiser, when used in conjunction with a spectral channeliser forms an adaptive intercept receiver for radio frequency (RF) spectrum sensing applications. The software-based design of the synthesiser targets a parallel, multi-core architecture in the form of a graphics processor unit (GPU). Our implementation provides maximum flexibility in terms of the bandwidth and signal duration which can be synthesised. Specifically, the design supports the synthesis of any number of frequency channels that are output from the channeliser front-end and this is achieved on a signal-to-signal basis. Multiple NVIDIA Tesla V100 GPUs were used to benchmark the performance of our GPU synthesis design. A number of representative signal types with variable bandwidth and duration were input into the GPU synthesis framework and the performance measured by computing the maximum throughput of synthesised signals per second. Our analysis also included a comparison of the GPU implementation with that of a multithreaded central processing unit (CPU) implementation. Our GPU implementation was able to achieve a 100× improvement in throughput performance on a single GPU for one of the test signals, and a minimum of 25× improvement in throughput performance for all of the test signals when compared to the CPU implementation.
本文描述了一种可重构的软件定义合成器的设计和实现，当与频谱信道器结合使用时，形成射频(RF)频谱传感应用的自适应拦截接收器。基于软件的合成器设计目标是图形处理器单元(GPU)形式的并行多核架构。我们的实现在可以合成的带宽和信号持续时间方面提供了最大的灵活性。具体来说，该设计支持从信道器前端输出的任意数量的频率通道的合成，这是在信号对信号的基础上实现的。多个NVIDIA Tesla V100 GPU被用来测试我们的GPU合成设计的性能。将一些具有可变带宽和持续时间的代表性信号类型输入到GPU合成框架中，并通过计算每秒合成信号的最大吞吐量来测量性能。我们的分析还包括GPU实现与多线程中央处理单元(CPU)实现的比较。我们的GPU实现能够在单个GPU上实现一个测试信号的吞吐量性能提高100倍，并且与CPU实现相比，所有测试信号的吞吐量性能至少提高25倍。
{"title":"GPU Synthesis of RF Channeliser Outputs for a Variable Bandwidth Microwave Digital Receiver","authors":"Simon Faulkner, Simon Herfurth, T. Lamahewa, S. D. Elton","doi":"10.1109/ICSPCS.2018.8631751","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631751","url":null,"abstract":"This paper describes the design and implementation of a reconfigurable, software-defined synthesiser, when used in conjunction with a spectral channeliser forms an adaptive intercept receiver for radio frequency (RF) spectrum sensing applications. The software-based design of the synthesiser targets a parallel, multi-core architecture in the form of a graphics processor unit (GPU). Our implementation provides maximum flexibility in terms of the bandwidth and signal duration which can be synthesised. Specifically, the design supports the synthesis of any number of frequency channels that are output from the channeliser front-end and this is achieved on a signal-to-signal basis. Multiple NVIDIA Tesla V100 GPUs were used to benchmark the performance of our GPU synthesis design. A number of representative signal types with variable bandwidth and duration were input into the GPU synthesis framework and the performance measured by computing the maximum throughput of synthesised signals per second. Our analysis also included a comparison of the GPU implementation with that of a multithreaded central processing unit (CPU) implementation. Our GPU implementation was able to achieve a 100× improvement in throughput performance on a single GPU for one of the test signals, and a minimum of 25× improvement in throughput performance for all of the test signals when compared to the CPU implementation.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117331452","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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