{"title":"Capacity and capacity-achieving input distribution of the energy detector","authors":"E. Leitinger, B. Geiger, K. Witrisal","doi":"10.1109/ICUWB.2012.6340409","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340409","url":null,"abstract":"This paper presents the channel capacity and capacity-achieving input distribution of an energy detection receiver structure. A proper statistical model is introduced which makes it possible to treat the energy detector as a constrained continuous communication channel. To solve this non-linear optimization we used the Blahut-Arimoto algorithm extended with a particle method, so that also continuous channels can be handled. To get a better convergence behavior of the algorithm, we also implement two new methods, which are called “fuse particles” and “kick particles” [1]. The results we present show that the capacity of the energy detector decreases with increasing integration time and decreasing peak-to-average power ratio. It is shown that the capacity-achieving input distribution is discrete with a finite number of mass points.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125450128","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}
{"title":"UWB antenna for wireless communication and detection applications","authors":"A. Kishk, X. Wu, K. S. Ryu","doi":"10.1109/ICUWB.2012.6340457","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340457","url":null,"abstract":"Several ultrawide band (UWB, 3.1-10.6 GHz) antennas are presented for either wireless communications or detection applications. An UWB antenna could be either a planer structure for portable devices or has a 3D configuration, which is suitable for an access point. Dielectric resonator is used to tremendously shrink an UWB antenna's size, which is important for a terminal device. Different DR loading schemes of a planer UWB antenna is discussed. The application of such a DR UWB antenna in breast cancer detection is also investigated. For wireless communication, antenna techniques to reject the interferences from WLAN bands are presented for printed UWB antennas. Lastly, an omnidirectional UWB antenna with a nonplaner structure is presented for an UWB access point.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126653083","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}
{"title":"Accurate permittivity estimation method by compensating waveform deformation for UWB internal imaging radar","authors":"Ryunosuke Souma, S. Kidera, T. Kirimoto","doi":"10.1109/ICUWB.2012.6340401","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340401","url":null,"abstract":"Ultra-wideband pulse radar has high range resolution and permeability in a dielectric medium, and has great potential for non-destructive inspection or early-stage detection of breast cancer. As an accurate and high-resolution imaging method for targets embedded in dielectric medium, extended range points migration (RPM) has been developed. Although this method offers an accurate internal target image in a homogeneous media, it assumes the permittivity of the dielectric medium is given, which is not practical for general applications. Although there are various permittivity estimation methods, they require an enormous computation or are hardly applicable to an arbitrary dielectric boundary. To overcome the above drawbacks, we newly propose a permittivity estimation method suitable for various shapes of dielectric media, where the dielectric boundary points and their normal vectors are accurately determined by the original RPM method. In addition, our method iteratively compensates for the scattered waveform deformation using a finite-difference time domain (FDTD) method to enhance the accuracy of the permittivity estimation. Results from numerical simulation demonstrate that our method achieves accurate permittivity estimation less than 5 % even for a dielectric medium of wavelength size.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121479298","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}
{"title":"Nonparametric and accurate imaging algorithm for a target with arbitrary motion using multi-static UWB radar","authors":"R. Yamaguchi, S. Kidera, T. Kirimoto","doi":"10.1109/ICUWB.2012.6340398","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340398","url":null,"abstract":"Ultra-wideband pulse radar is a promising technology for the imaging sensors of rescue robots operating in disaster scenarios, where optical sensors are not applicable because of dark smog or high-density gas. For the above application, while one promising ultra-wideband radar imaging algorithm for a target with arbitrary motion has already been proposed with a compact observation model, it is based on an ellipsoidal approximation of the target boundary, and is thus hardly applicable to complex target shapes, particularly when targets have specular surfaces or surface edges. To tackle the above problem, this paper proposes a non-parametric and robust imaging algorithm for a target with arbitrary motion including rotation and translation using multi-static radar, which is based on the matching of target boundary points obtained by range points migration extended to this model. To enhance the imaging accuracy in situations having lower signal-to-noise ratios, the proposed method also adopts an integration scheme for the obtained range points, where the equivalent antenna locations are correctly compensated for the estimated target motion. Results from numerical simulations show that the proposed method accurately extracts the surface of a moving target, and estimates the motion of the target, without any target or motion model.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116678307","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}
{"title":"A 90 nm CMOS high order derivative Gaussian pulse generator using LC-Tank oscillator for 6–10 GHz UWB transceiver","authors":"Nhan Nguyen, N. Duong, A. Dinh, Tao Wang","doi":"10.1109/ICUWB.2012.6340494","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340494","url":null,"abstract":"This paper presents a CMOS impulse radio ultrawideband (IR-UWB) pulse generator with low power, high peak amplitude and high frequency. A high order derivative Gaussian pulse using LC-Tank oscillator generates a pulse for the 6-10 GHz IR-UWB transceivers. This pulse PSD fully complies with the FCC spectrum mask. The pulse generator was designed and fabricated using 90 nm CMOS technology. Measurement results show the die area of only 0.074 mm2, a pulse width of 785 ps and a peak-to-peak amplitude of 324 mV. The average power consumption is approximately 6.7 mW for a pulse repetition frequency (PRF) of 25 MHz and 1.0 V supply voltage.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116769095","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}
{"title":"Improvement of coexisting signal detection for MB-OFDM system","authors":"K. Ohno, M. Itami, T. Ikegami","doi":"10.1109/ICUWB.2012.6340484","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340484","url":null,"abstract":"This paper discusses coexisting signal detection technique of the interference DAA (Detect And Avoid) operation. In this paper, the emission of the coexisting singles and their occupied frequency band detection technique for the MB-OFDM (Multi-Band OFDM) system is proposed in order to improve the DER (miss Detection Error Rate) and the FAR (False Alarm Rate). The received coexisting signal is assumed to be the sum of the sinusoidal waves. The sinusoidal signal is detected and it is subtracted from the received signal iteratively to minimize the evaluation function. The frequency, phase and amplitude of the sinusoidal signals are estimated using the evaluation function and the Newton method. Obtained amplitude coefficients are combined per the bandwidth and the results are compared with the threshold to detect coexisting signal having wider bandwidth than FFT bin. The DER and FAR are evaluated to show the effectiveness of the proposed detection technique. The performances of the proposed detection scheme are improved comparing to the ordinary scheme using FFT.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131278283","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}
Leonardo C. Neves, G. M. D. Araujo, J. C. D. Costa, H. Madureira, S. Haddad
{"title":"UWB pulses generator filter for M-ary communication systems","authors":"Leonardo C. Neves, G. M. D. Araujo, J. C. D. Costa, H. Madureira, S. Haddad","doi":"10.1109/ICUWB.2012.6340467","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340467","url":null,"abstract":"This work proposes an M-ary communication system based on PSWF pulses. First, a State Space Filter whose impulse response is a PSWF pulse is developed. Then, it is modified to obtain the first and second order pulses. Finally, an M-ary communication system for UWB using this set of orthogonal pulses is proposed.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117322344","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}
{"title":"Data mining models for computing the characteristic impedances of elliptic and circular shaped microshield lines","authors":"Y. Cengiz, Sedat Ates","doi":"10.1109/ICUWB.2012.6340492","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340492","url":null,"abstract":"In this work, data mining techniques (DMT) are proposed to be used in regression, in the other words in modeling. As an application example, the commonly used data mining techniques such as Multilayer Perceptron (MLP), M5 model tree, and Reptree are employed to model the characteristic impedances of elliptic and circular-shaped microshield lines as a function of the geometry and substrate parameters. The training and validation data are provided from the analytical formulae. Thus the black- box models are achieved for these types of wave guiding systems where their characteristic empedances are evaluated through data mining techniques to be used in the analysis and design of the microwave circuits. It has been shown that DMT have a high potential of faithful and efficient lines modeling.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"442 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116067025","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}
{"title":"Nonlinear signal processing technologies for energy detection based impulse radio UWB transceivers","authors":"H. Nie, Z. Chen, Zhimeng Xu","doi":"10.1109/ICUWB.2012.6340460","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340460","url":null,"abstract":"Presently most signal processing technologies employed in impulse radio UWB transceivers are straightforward derivatives of those designed for conventional wireless transceivers. They appear not to take full advantage of some special features offered by the impulse radio UWB transceivers, such as ultra-wide bandwidth and very short duration pulses. To move beyond this shortcoming, in this paper, we have reviewed our recent innovations in using nonlinear signal processing technologies, in particular, the Teager-Kaiser operator and the square law device, in energy detection based UWB transceivers. It is found that nonlinear signal processing technologies can mitigate not only the destructive effects caused a narrowband interference but also those caused wideband noises, and hence can significantly improve the bit-error-rate performance of energy detection based UWB transceivers no matter when a narrowband interference is present or not. In summary, use of nonlinear signal processing technologies is a groundbreaking innovation and presents a potentially new horizon for research and development of UWB systems.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123431521","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}
{"title":"Wideband information in MOM obtained from narrowband data","authors":"F. Kaburcuk, S. Arvas, E. Arvas, J. Lee","doi":"10.1109/ICUWB.2012.6340463","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340463","url":null,"abstract":"When solving radiation and/or scattering problems, the Method of Moments can give wideband information by using a Model Based Parameter Estimation technique for the expansion coefficients. The parameters are obtained by computing the values of expansion coefficients and their frequency derivatives at a fixed center frequency. This requires computing the moment matrix and its frequency derivatives. The technique is illustrated for a thin wire scatterer. Piecewise sinusoids are used as expansion functions and point matching is used for testing. The moment matrix and its derivatives can then be computed analytically. Computed results show that depending on the number of derivatives used, accurate results, including resonances, can be obtained over an octave of bandwidth.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127298883","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}