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

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Performance analysis of impulse radio under timing jitter using M-ary bipolar pulse waveform and position modulation 采用M-ary双极脉冲波形和位置调制的脉冲无线电定时抖动性能分析
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267815
Shih-Chun Lin, T. Chiueh
{"title":"Performance analysis of impulse radio under timing jitter using M-ary bipolar pulse waveform and position modulation","authors":"Shih-Chun Lin, T. Chiueh","doi":"10.1109/UWBST.2003.1267815","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267815","url":null,"abstract":"In this paper, we derive analytical bit error rate (BER) performance of impulse radio using spread-spectrum technique under correlated random timing jitters. The result is applied to the bipolar pulse waveform and position modulation (BPWPM) to study its degradation in performance. High-order derivatives of the Gaussian pulse with about 500 ps pulse width are chosen to comply the FCC part 15 limit. The analysis concludes that both jitter root-mean square (RMS) value and correlation between jitters are important factors that influence system performance. When the jitters are highly correlated, different signal sets will have different levels of performance degradation even with the same jitter RMS value, which needs be taken into consideration in impulse radio system design.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"26 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":"125243074","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: 15
Antenna and pulse designs for meeting UWB spectrum density requirements 满足超宽带频谱密度要求的天线和脉冲设计
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267824
Guofeng Lu, P. Spasojevic, L. Greenstein
{"title":"Antenna and pulse designs for meeting UWB spectrum density requirements","authors":"Guofeng Lu, P. Spasojevic, L. Greenstein","doi":"10.1109/UWBST.2003.1267824","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267824","url":null,"abstract":"Antenna design in ultra-wideband (UWB) systems is a major challenge. For, in contrast to conventional systems, wherein waveform distortion by the antenna is negligible, there is potentially significant waveform distortion by UWB antennas. A further challenge to UWB system design is posed by mandated limits on power spectrum density, such as the FCC emission mask. In this paper, we join these two issues for the case of impulse radio (IR)-type UWB, showing how antenna design, transmit pulse design, filter design and attainable output signal-to-noise ratio (SNR) are intertwined. In particular, through software simulation, several antenna frequency responses are calculated, and a modified inversely-positioned bowtie antenna ('rounded diamond') is found to give the broadest frequency response. An integrated design of antenna, transmit pulse shaping and receive filtering is presented that gives near-maximal SNR under the FCC mask constraint, and comparisons are made to alternative designs.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"175 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":"120953198","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: 48
A methodology to investigate UWB digital receiver sensitivity to clock jitter 一种研究超宽带数字接收机对时钟抖动灵敏度的方法
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267816
M. Pelissier, B. Denis, Dominique Morche
{"title":"A methodology to investigate UWB digital receiver sensitivity to clock jitter","authors":"M. Pelissier, B. Denis, Dominique Morche","doi":"10.1109/UWBST.2003.1267816","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267816","url":null,"abstract":"Some UWB receivers, digitally oriented, sample the RF signal at a very high frequency close to 20 GHz. In that case, the phase noise and jitter performances of the clock synthesizer which controls the sampling process are crucial. This paper proposes a methodology to investigate the UWB receiver sensitivity to clock jitter. First we develop jitter models in delay locked loop (DLL) and phase locked loop (PLL) synthesizers. These models are injected in a UWB chain in order to evaluate the sensitivity of sampling and correlation. Finally, some analytical expressions, fitting with the simulation results, are established.","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":"121253296","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: 11
Multiple access capacity in multipath channels of delay-hopped transmitted-reference UWB 延迟跳变传输参考超宽带多径信道的多址容量
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267855
R. Hoctor
{"title":"Multiple access capacity in multipath channels of delay-hopped transmitted-reference UWB","authors":"R. Hoctor","doi":"10.1109/UWBST.2003.1267855","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267855","url":null,"abstract":"The multiple access capacity of delay-hopped transmitted-reference (DHTR) ultra-wideband radio [R.T. Hoctor et al., May 2002, N. Vanstralen et al., May 2002] is investigated through analysis and simulation. The factor that limits the multiple access capacity of DHTR is the degree of multipath in the transmission channel.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"37 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":"115097328","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 programmable ultra wideband signal generator for electromagnetic susceptibility testing 用于电磁敏感性测试的可编程超宽带信号发生器
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267795
R. Fontana, E. Richley, L. Beard, J. Barney
{"title":"A programmable ultra wideband signal generator for electromagnetic susceptibility testing","authors":"R. Fontana, E. Richley, L. Beard, J. Barney","doi":"10.1109/UWBST.2003.1267795","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267795","url":null,"abstract":"Under Phase I of the Defense Advanced Research Projects Agency (DARPA) Networking in Extreme Environments (NETEX) initiative, Multispectral Solutions, Inc. (MSSI) was tasked with the development of a general purpose, ultra wideband hardware simulator capable of reproducing a wide variety of ultra wideband (UWB) waveforms. The simulator, with UWB outputs from baseband through millimeter wave, was to be used for the purpose of electromagnetic susceptibility testing of legacy military radio, radar and positioning systems. The ultimate goal of this portion of the Phase I program was the quantitative determination of those UWB parameters (e.g., frequency, power, pulse rate, pulse shape, dithering, etc.), which had the least impact on the operational performance of legacy designs. This paper describes the development of the MSSI NETEX UWB simulator (BFPl000).","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"37 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":"127068921","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
PulsON P200 UWB radio: simulation and performance results PulsON P200超宽带无线电:仿真和性能结果
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267861
A. Petroff, R. Reinhardt, R. Stanley, B. Beeler
{"title":"PulsON P200 UWB radio: simulation and performance results","authors":"A. Petroff, R. Reinhardt, R. Stanley, B. Beeler","doi":"10.1109/UWBST.2003.1267861","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267861","url":null,"abstract":"In 1999, Time Domain (TDC) introduced the first ultra-wideband (UWB) radios using the PuIsON P100 chipset. In 2002, a second-generation chipset, the PuIsON P200, was introduced. It consists of a P200 timer (T2), P200 correlator (C2) and P200 digital baseband (DBB) chip. The chipset has been incorporated into the P200 UWB radio platform. The P200 radio is architected as an 8-correlator transceiver. The correlators are configured to minimize acquisition time, provide rake receiver gain, enable higher order modulation, provide nulling of in-band jammers and provide a means to record the entire received waveform (waveform capture). The radio relies on coherent signal processing. Energy from up to 1024 pulses can be coherently summed thereby providing 30dB of process gain. Additional process gain is realized from duty cycle as the 0.5 ns waveform is transmitted once every 104ns. As part of the design process, the radio was well simulated and a link budget was produced. Upon completion, the radio performance was compared to the predicted values. The radio has been tested as a communications system, a ranging system and as a mono-, bi- and multi-static radar. This paper summarizes the radio architecture, modulation, link budget, simulation, and performance results.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"1 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":"130829192","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: 11
A non-Gaussian approach to the performance analysis of UWB TH-BPPM systems 超宽带TH-BPPM系统性能分析的非高斯方法
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267801
M. Sabattini, E. Masry, L. Milstein
{"title":"A non-Gaussian approach to the performance analysis of UWB TH-BPPM systems","authors":"M. Sabattini, E. Masry, L. Milstein","doi":"10.1109/UWBST.2003.1267801","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267801","url":null,"abstract":"We investigate the performance of a time hopped-binary pulse position modulation system in the presence of multi-user interference. Since the exact characteristic function (as well as the pdf) for the multiple access interference is not known, and the Gaussian approximation (especially in presence of a small number of users) has been shown to be very poor, a new, non-Gaussian, approach is proposed. We first present an approximate characteristic function for the multiple access interference and the corresponding probability of error of the system; we then compare the analytical results with simulations and with the common Gaussian approximation.","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":"128818513","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: 55
The effects of antenna directivity on path loss and multipath propagation in UWB indoor wireless channels 天线指向性对超宽带室内无线信道路径损耗和多径传播的影响
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267853
J. Dabin, N. Ni, A. Haimovich, E. Niver, H. Grebel
{"title":"The effects of antenna directivity on path loss and multipath propagation in UWB indoor wireless channels","authors":"J. Dabin, N. Ni, A. Haimovich, E. Niver, H. Grebel","doi":"10.1109/UWBST.2003.1267853","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267853","url":null,"abstract":"The effects of antenna directivity on path loss and multipath propagation in the ultra-wideband (UWB) indoor channel are analyzed for different transmitter/receiver (Tx/Rx) antenna combinations in the 2 GHz to 6 GHz frequency band. A statistical model of the path loss in the channel is presented, where the parameters in the model (i.e., path loss exponent and shadow fading statistics) are dependent on the particular Tx/Rx antenna combination. Time domain statistics of the channel (i.e., mean delay spread and RMS delay spread) are analyzed thoroughly for each antenna combination. There is a significant reduction in RMS delay spread when directional antennas are used at the transmitter and receiver as opposed to using omni-directional antennas. Results show that directional antennas can be used as an effective way of mitigating the effects of multipath propagation in UWB indoor channels.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"36 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":"132686822","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: 67
A priori probability calculation for UWB systems using correlated PPM and polarity modulation 使用相关PPM和极性调制的超宽带系统的先验概率计算
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267874
L. Rouault, S. Chaillou, D. Hélal
{"title":"A priori probability calculation for UWB systems using correlated PPM and polarity modulation","authors":"L. Rouault, S. Chaillou, D. Hélal","doi":"10.1109/UWBST.2003.1267874","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267874","url":null,"abstract":"In pulsed ultrawideband (UWB) systems, pulse position modulation (PPM) allows information to be conveyed by delaying the pulse position inside a pulse repetition period (PRP). In addition, polarity (antipodal positions) allows the transmission of one more bit per pulse, at low implementation cost. The contribution of one pulse to the received signal is the composite channel response (CCR), which is the convolution of the emitted pulse shape and the impulse channel response. The demodulator can be simply a bank of correlators using delayed versions of the estimated CCR, as templates. For a soft-input bitwise channel decoding, the A priori probability (APP) per bit is then calculated using the correlators' output values, and processed by a channel decoder. In this paper, assuming perfect synchronisation, a perfect CCR estimation, and no inter symbol interference (ISI), we investigate the effect of the correlation between the delayed CCRs on the APP calculation. Proof is given for N-PPM and polarity modulation that there is no need to consider the correlation values in the APP calculation. Simulation results shows the APP distribution for different signal-to-noise ratio (SNR) and correlation values, the influence of the max log approximation on the BER performance is also presented.","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":"133687424","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: 0
On the interference between UMTS and UWB systems UMTS与UWB系统间的干扰
IEEE Conference on Ultra Wideband Systems and Technologies, 2003 Pub Date : 2003-11-16 DOI: 10.1109/UWBST.2003.1267860
R. Giuliano, F. Mazzenga, F. Vatalaro
{"title":"On the interference between UMTS and UWB systems","authors":"R. Giuliano, F. Mazzenga, F. Vatalaro","doi":"10.1109/UWBST.2003.1267860","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267860","url":null,"abstract":"Ultra wide bandwidth (UWB) spread-spectrum techniques will play a key role in short range wireless connectivity supporting high bit rates availability, low power consumption and location capabilities. UWB can be used in the design of wireless local and personal area networks providing advanced integrated multimedia services to nomadic users within hot-spot areas. Due to the very large UWB signal bandwidth, the assessment of the possible interference caused by UWB devices on already existing narrowband systems is fundamental to ensure not conflicting coexistence and, therefore, to guarantee acceptance of UWB technology worldwide. In this paper we study the coexistence issues between an UWB-based system and an UMTS terminal. We consider a realistic UWB master/slave system architecture and through computer simulation we show that in all practical cases UWB system can coexist with UMTS terminal without causing any dangerous interference.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"19 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":"115444388","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: 38
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