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IEEE Conference on Ultra Wideband Systems and Technologies, 2003最新文献

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Extension of SIMO wideband channel sounder for UWB propagation experiment 用于超宽带传播实验的SIMO宽带信道测深仪的扩展
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267842
P. Pajusco, P. Pagani
{"title":"Extension of SIMO wideband channel sounder for UWB propagation experiment","authors":"P. Pajusco, P. Pagani","doi":"10.1109/UWBST.2003.1267842","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267842","url":null,"abstract":"Good knowledge of transmission channel properties is necessary to study the performances of future UWB systems. Thus, efficient equipment is required to characterize and model the UWB propagation channel. This paper proposes a basic idea to convert a SIMO wideband channel sounder into an UWB channel sounder. These minor changes were applied to the France Telecom R&D channel sounder. The modified equipment enables real time measurement in the 3.1 10.6 GHz frequency band with more than 1 GHz bandwidth.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114541839","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}
引用次数: 7
Precise bit error rate of TH-PPM UWB systems in the presence of multiple access interference 多址干扰下TH-PPM超宽带系统的精确误码率
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267812
Bo Hu, N. Beaulieu
{"title":"Precise bit error rate of TH-PPM UWB systems in the presence of multiple access interference","authors":"Bo Hu, N. Beaulieu","doi":"10.1109/UWBST.2003.1267812","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267812","url":null,"abstract":"A time-hopping sequence is used in ultra-wideband wireless systems to eliminate catastrophic collisions in multiaccess communication environments. A new analytical method based on a characteristic function technique is proposed for precisely calculating the bit error probability of time-hopping pulse position modulation ultra-wideband systems with multiple access interference. The analytical expression is verified by simulation and used to assess the accuracy of the Gaussian approximation. The Gaussian approximation is shown to be inaccurate for predicting bit error rates for medium and large signal-to-noise ratio values.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130116755","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}
引用次数: 10
An accurate ultra wideband (UWB) ranging for precision asset location 精确的超宽带(UWB)测距，用于精确的资产定位
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267870
W. Chung, D. Ha
{"title":"An accurate ultra wideband (UWB) ranging for precision asset location","authors":"W. Chung, D. Ha","doi":"10.1109/UWBST.2003.1267870","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267870","url":null,"abstract":"This paper investigates a ranging method employing ultra wideband (UWB) pulses under the existence of the line of sight (LOS) path in a multipath environment. Our method is based on the estimation of time of arrival of the first multipath. It averages the received pulses over multiple time frames, performs a correlation operation on the averaged signal, and detects the peak of the correlated signal. Our method reduces the ranging accuracy over conventional methods, and its accuracy is close to the Cramer-Rao lower bound (CRLB) on even for a low SNR.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130156919","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}
引用次数: 211
LMS analog and digital narrowband rejection system for UWB communications 用于超宽带通信的LMS模拟和数字窄带抑制系统
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267809
D. McKinstry, R. Buehrer
{"title":"LMS analog and digital narrowband rejection system for UWB communications","authors":"D. McKinstry, R. Buehrer","doi":"10.1109/UWBST.2003.1267809","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267809","url":null,"abstract":"The impact of narrowband interference on ultra-wideband (UWB) communications systems and inversely, the impact of UWB signals on narrowband systems are discussed. An analog and digital narrowband rejection system for UWB receivers is presented and evaluated. This rejection system is shown to offer significant communications system improvement in the presence of strong interferers.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134424410","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}
引用次数: 17
Ultra-wideband object characterization via A-scan 通过a扫描的超宽带物体表征
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267888
G. Oßberger, T. Buchegger, K. Pourvoyeur, E. Schimback, A. Stelzer, R. Weigel
{"title":"Ultra-wideband object characterization via A-scan","authors":"G. Oßberger, T. Buchegger, K. Pourvoyeur, E. Schimback, A. Stelzer, R. Weigel","doi":"10.1109/UWBST.2003.1267888","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267888","url":null,"abstract":"In this paper a novel method for ultra-wideband object characterization using a single A-scan is presented. The impulse response of the arrangement at a single measurement position is called an A-scan. The data of an A-scan is processed with the novel wavelet based pulse reconstruction to determine five parameters of the pulse approximation. The width of different copper plates can be characterized by the dilatation of the reconstructed pulse which is one of the five parameters. To get real radar reflection data an ultra-wideband impulse radar setup was used. The presented results testify, that there is a direct link between the parameter dilatation factor and the width of a centered copper plate. To verify the results of the measurement analysis a simulation tool was developed. The presented results of the simulation accord very good with the measurement.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121802408","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}
引用次数: 1
Metal contact RF MEMS switch elements for ultra wideband RF front-end systems 用于超宽带射频前端系统的金属接触射频MEMS开关元件
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267797
J. Schaffner, A. Schmitz, T. Hsu, D. Chang, R. Loo, D. Sievenpiper
{"title":"Metal contact RF MEMS switch elements for ultra wideband RF front-end systems","authors":"J. Schaffner, A. Schmitz, T. Hsu, D. Chang, R. Loo, D. Sievenpiper","doi":"10.1109/UWBST.2003.1267797","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267797","url":null,"abstract":"Metal contact RF MEMS switch circuit elements have been developed to be used as building blocks for wideband signal routing. A switch element can have up to four switches fabricated monolithically on a single GaAs chip. More complicated switch circuits can be constructed by assembling multiple basic switch elements on a hybrid RF interconnection printed circuit board. In this paper, two basic types of switch functions are presented, single-pole multiple-throw switch elements and matrix switch elements. Measured insertion loss and isolation performances of these circuits are presented.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115722200","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}
引用次数: 8
A digital ultra-wideband multiband transceiver architecture with fast frequency hopping capabilities 一种具有快速跳频能力的数字超宽带多频带收发器架构
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267882
I. S. Lu, N. Weste, S. Parameswaran
{"title":"A digital ultra-wideband multiband transceiver architecture with fast frequency hopping capabilities","authors":"I. S. Lu, N. Weste, S. Parameswaran","doi":"10.1109/UWBST.2003.1267882","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267882","url":null,"abstract":"This paper presents for the first time the circuit parameter analysis of a digital multiband-UWB transceiver, encompassing a novel low-power sub-band generator. This sub-band generator is capable of producing multiple frequency bands, enabling sub-band generation from 3 to 10 GHz with nanosecond switching times. The circuit analysis of the complete transceiver is used to set parameters of components. The analysis indicate that a LNA gain of 20 dB, baseband amplifier gain of 45 dB, matched filter accuracy of five bits, ADC accuracy of two bits, a 60 dB dynamic range of the multi-frequency generator, and front end offset voltage of less than 30 mV is required to achieve a 10 dB SNR. Hspice simulation utilizing 0.35 /spl mu/m CMOS technology suggest that the power consumption of the sub-band generator is 8 mW from a 1.8 V power supply.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125538133","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}
引用次数: 6
A frequency-domain approach for all-digital CMOS ultra wideband receivers 一种全数字CMOS超宽带接收机的频域方法
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267808
Hyung-Jin Lee, D. Ha, Hyung-Soo Lee
{"title":"A frequency-domain approach for all-digital CMOS ultra wideband receivers","authors":"Hyung-Jin Lee, D. Ha, Hyung-Soo Lee","doi":"10.1109/UWBST.2003.1267808","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267808","url":null,"abstract":"In this work, we propose a new approach to process received signals in the frequency-domain, which opens the possibility for CMOS implementation of all-digital ultra wideband receivers. The key idea for the proposed method is to extract the frequency components of the received signal and to perform signal processing in the frequency domain. The proposed receiver architecture relaxes the speed requirement of analog-to-digital converters and is highly suitable for a multipath rich environment such as UWB. Our simulation results indicate that the proposed receiver improves the SNR by about 3 dB at BER=10/sup -1/ when compared with an analog receiver under multi-path channel conditions.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117179706","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}
引用次数: 43
Performances analysis of a UWB receiver using complex processing 使用复杂处理的超宽带接收机性能分析
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267838
S. de Rivaz, B. Denis, J. Keignart, M. Pezzin, N. Daniele, D. Morche
{"title":"Performances analysis of a UWB receiver using complex processing","authors":"S. de Rivaz, B. Denis, J. Keignart, M. Pezzin, N. Daniele, D. Morche","doi":"10.1109/UWBST.2003.1267838","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267838","url":null,"abstract":"Ultra wideband (UWB) systems are characterized by the transmission of very low power spectral density signals using bandwidths from 500 MHz up to several GHz and propagating through dense multipath channels. Digital communications using UWB impulse radio concern, among others, high data rate transmissions, for instance between 1 Mbps and 1 Gbps. The aim of this analysis is to define a generic UWB model, in terms of signal shape, modulation scheme and channel representation. Then, this model is used to specify and evaluate a brand-new principle of UWB receiver based on a mono band complex processing and maximum ratio combining.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131788653","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}
引用次数: 14
A reduced-complexity acquisition algorithm for UWB impulse radio 一种UWB脉冲无线电的低复杂度采集算法
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267817
L. Reggiani, G. M. Maggio
{"title":"A reduced-complexity acquisition algorithm for UWB impulse radio","authors":"L. Reggiani, G. M. Maggio","doi":"10.1109/UWBST.2003.1267817","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267817","url":null,"abstract":"UWB (ultra-wideband) is a promising technology for short-range wireless communications, like in WPAN (wireless personal area networks) applications. In the context of UWB impulse radio, one of the crucial challenges remains the acquisition of synchronization in terms of time, precision and number of operations. In this paper, we present a novel strategy for reducing the number of operations required for the coarse acquisition of pseudo-noise sequences (at the chip level), thus speeding up the overall synchronization process. Also, we discuss the trade-off between computational load and synchronization performance.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"630 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131621122","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}
引用次数: 29
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