Pub Date : 1900-01-01DOI: 10.1109/uwbst.2003.1267791
Hyatt Regency Reston
The following topics were dealt with: NETEX; ultrawideband circuits and devices; communication systems and waveforms; interference; multiple access issues; timing; acquisition; antennas; networks; channel measurement; channel modeling; radar location applications; and position location application.
{"title":"2003 IEEE Conference on Ultra Wideband Systems and Technologies (IEEE Cat. No.03EX759)","authors":"Hyatt Regency Reston","doi":"10.1109/uwbst.2003.1267791","DOIUrl":"https://doi.org/10.1109/uwbst.2003.1267791","url":null,"abstract":"The following topics were dealt with: NETEX; ultrawideband circuits and devices; communication systems and waveforms; interference; multiple access issues; timing; acquisition; antennas; networks; channel measurement; channel modeling; radar location applications; and position location application.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116306371","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267807
Hyunseok Kim, Dongwon Park, Y. Joo
In this paper, a new Scholtz's monocycle pulse generator is proposed and simulated on TSMC 0.18 /spl mu/m CMOS technology. Scholtz's monocycle pulse, which has more advantages than the others, is basically achieved from second derivative of Gaussian pulse. Gaussian pulse is roughly achieved on quadrant squarer circuit with hyperbolic tangent input, and then Scholtz's monocycle pulse is generated by second differential operations in passive components. It can be applied to pulse generator in UWB transmitter as well as the wavelet for a correlator in receiver.
本文提出了一种新的肖尔茨单周期脉冲发生器，并在TSMC 0.18 /spl μ m CMOS技术上进行了仿真。肖尔茨单环脉冲基本上是由高斯脉冲的二阶导数实现的，它比其他单环脉冲具有更多的优点。首先在双曲正切输入的象限平方电路上粗略实现高斯脉冲，然后在无源元件中进行二次微分运算产生肖尔茨单环脉冲。它既可以应用于超宽带发射机的脉冲发生器，也可以应用于接收机相关器的小波变换。
{"title":"Design of CMOS Scholtz's monocycle pulse generator","authors":"Hyunseok Kim, Dongwon Park, Y. Joo","doi":"10.1109/UWBST.2003.1267807","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267807","url":null,"abstract":"In this paper, a new Scholtz's monocycle pulse generator is proposed and simulated on TSMC 0.18 /spl mu/m CMOS technology. Scholtz's monocycle pulse, which has more advantages than the others, is basically achieved from second derivative of Gaussian pulse. Gaussian pulse is roughly achieved on quadrant squarer circuit with hyperbolic tangent input, and then Scholtz's monocycle pulse is generated by second differential operations in passive components. It can be applied to pulse generator in UWB transmitter as well as the wavelet for a correlator in receiver.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131423925","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267820
Z. Tian, G. Giannakis
Realizing the great potential of ultra-wideband radios depends critically on the success of timing acquisition. To this end, optimum data-aided timing offset estimators are derived in this paper based on the maximum likelihood (ML) criterion. Specifically, generalized likelihood ratio tests are employed to detect an ultra-wideband waveform propagating through dense multipath, as well as to estimate the associated timing and channel parameters in closed form. The acquisition ambiguity induced by multipath spreading and time hopping is resolved via a robust ML formulation. The proposed algorithms only employ digital samples collected at a low symbol or frame rate, thus reducing considerably the implementation complexity and acquisition time.
{"title":"Data-aided ML timing acquisition in ultra-wideband radios","authors":"Z. Tian, G. Giannakis","doi":"10.1109/UWBST.2003.1267820","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267820","url":null,"abstract":"Realizing the great potential of ultra-wideband radios depends critically on the success of timing acquisition. To this end, optimum data-aided timing offset estimators are derived in this paper based on the maximum likelihood (ML) criterion. Specifically, generalized likelihood ratio tests are employed to detect an ultra-wideband waveform propagating through dense multipath, as well as to estimate the associated timing and channel parameters in closed form. The acquisition ambiguity induced by multipath spreading and time hopping is resolved via a robust ML formulation. The proposed algorithms only employ digital samples collected at a low symbol or frame rate, thus reducing considerably the implementation complexity and acquisition time.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130917063","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267880
S. Yoshizumi, T. Terada, J. Furukawa, Y. Sanada, T. Kuroda
This paper describes a new transmitting scheme which doesn't need a pulse generator and hardware design for pulse-based ultra-wideband radio avoiding expensive and power hungry analog components especially at transmitter. The transmitter, which was implemented in 0.18 /spl mu/m CMOS technology, was 40 /spl mu/W average power simulated by HSPICE at 1 M pulse per second and 1 GHz bandwidth. The simplified pulse generation scheme at the transmitter was proposed. In the board experiment, the received signal was multiplied at mixer as an ideal by template pulse generated by second order RC filter. Moreover, the whole analog component of the receiver was simulated by MATLAB, and the usefulness was confirmed.
{"title":"All digital transmitter scheme and transceiver design for pulse-based ultra-wideband radio","authors":"S. Yoshizumi, T. Terada, J. Furukawa, Y. Sanada, T. Kuroda","doi":"10.1109/UWBST.2003.1267880","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267880","url":null,"abstract":"This paper describes a new transmitting scheme which doesn't need a pulse generator and hardware design for pulse-based ultra-wideband radio avoiding expensive and power hungry analog components especially at transmitter. The transmitter, which was implemented in 0.18 /spl mu/m CMOS technology, was 40 /spl mu/W average power simulated by HSPICE at 1 M pulse per second and 1 GHz bandwidth. The simplified pulse generation scheme at the transmitter was proposed. In the board experiment, the received signal was multiplied at mixer as an ideal by template pulse generated by second order RC filter. Moreover, the whole analog component of the receiver was simulated by MATLAB, and the usefulness was confirmed.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129305334","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267840
Matthew J. A. D'Souza, A. Postula
Current ultra-wideband communication systems use short narrow timed pulse sequences to transmit information. Some disadvantages of UWB communication systems are its interference of other conventional wireless systems and its reliance on time hopping schemes for multiple access. This paper presents a novel UWB data modulation scheme based on pulse shaping. This modulation scheme adds more flexibility for data modulation in UWB communication systems. The modulation scheme encodes data in both the timing and frequency spectrum of the transmitted pulse. This has the potential to improve data throughput rates and to lower interference between UWB and narrowband systems.
{"title":"Novel ultra-wideband pulse spectrum modulation scheme","authors":"Matthew J. A. D'Souza, A. Postula","doi":"10.1109/UWBST.2003.1267840","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267840","url":null,"abstract":"Current ultra-wideband communication systems use short narrow timed pulse sequences to transmit information. Some disadvantages of UWB communication systems are its interference of other conventional wireless systems and its reliance on time hopping schemes for multiple access. This paper presents a novel UWB data modulation scheme based on pulse shaping. This modulation scheme adds more flexibility for data modulation in UWB communication systems. The modulation scheme encodes data in both the timing and frequency spectrum of the transmitted pulse. This has the potential to improve data throughput rates and to lower interference between UWB and narrowband systems.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116258409","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267829
W. Horie, Y. Sanada
In this paper, a novel packet routing scheme for UWB ad-hoc network is proposed and evaluated. UWB is a kind of spread spectrum communication and it is possible to detect the distance between the nodes. The novel routing scheme proposed in this paper employs UWB's features and controls spreading factor according to the distance between the nodes. With controlling the maximum transmission distance and adopting multi-hop transmission, the throughput performance can be improved as compared to single-hop transmission.
{"title":"Novel packet routing scheme based on location information for UWB ad-hoc network","authors":"W. Horie, Y. Sanada","doi":"10.1109/UWBST.2003.1267829","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267829","url":null,"abstract":"In this paper, a novel packet routing scheme for UWB ad-hoc network is proposed and evaluated. UWB is a kind of spread spectrum communication and it is possible to detect the distance between the nodes. The novel routing scheme proposed in this paper employs UWB's features and controls spreading factor according to the distance between the nodes. With controlling the maximum transmission distance and adopting multi-hop transmission, the throughput performance can be improved as compared to single-hop transmission.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"83 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128342600","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267862
Xiliang Luo, Liuqing Yang, G. Giannakis
Ultra-wideband (UWB) technology is gaining increasing interest for its potential application to short-range indoor wireless communications. Utilizing ultra-short pulses, UWB baseband transmissions enable rich multipath diversity, and can be demodulated with low complexity receivers. Compliance with the FCC spectral mask, and interference avoidance to, and from, co-existing narrow-band services, calls for judicious design of UWB pulse shapers. This paper introduces pulse shaper designs for UWB radios, which optimally utilize the bandwidth and power allowed by the FCC spectral mask. The resulting baseband UWB systems can be either single-band, or, multi-band. More important, the novel pulse shapers can support dynamic avoidance of narrow-band interference, as well as efficient implementation of fast frequency hopping, without invoking analog carriers.
{"title":"Designing optimal pulse-shapers for ultra-wideband radios","authors":"Xiliang Luo, Liuqing Yang, G. Giannakis","doi":"10.1109/UWBST.2003.1267862","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267862","url":null,"abstract":"Ultra-wideband (UWB) technology is gaining increasing interest for its potential application to short-range indoor wireless communications. Utilizing ultra-short pulses, UWB baseband transmissions enable rich multipath diversity, and can be demodulated with low complexity receivers. Compliance with the FCC spectral mask, and interference avoidance to, and from, co-existing narrow-band services, calls for judicious design of UWB pulse shapers. This paper introduces pulse shaper designs for UWB radios, which optimally utilize the bandwidth and power allowed by the FCC spectral mask. The resulting baseband UWB systems can be either single-band, or, multi-band. More important, the novel pulse shapers can support dynamic avoidance of narrow-band interference, as well as efficient implementation of fast frequency hopping, without invoking analog carriers.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125953855","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267847
E. Saberinia, A. Tewfik
In this paper, we describe the leading proposal to the IEEE 802.15.3a wireless personal area networks (WPAN) standardization effort. That proposal relies on ultra wideband (UWB) orthogonal frequency division multiplexing (OFDM). We then propose an enhancement of the baseline system that uses pulsed sinusoids instead of continuous sinusoids to send information in parallel over different sub-carriers. Pulsating OFDM symbols spreads the spectrum of the modulated signals in the frequency domain leading to enhanced performance in multipath fading environments and reduced complexity and power consumption. We also provide a summary of the differences between pulsed OFDM and generalized UWB-OFDM that was proposed earlier. Finally, we present simulation results to confirm the advantages of pulsed UWB OFDM over non-pulsed wideband OFDM.
{"title":"Pulsed and non-pulsed OFDM ultra wideband wireless personal area networks","authors":"E. Saberinia, A. Tewfik","doi":"10.1109/UWBST.2003.1267847","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267847","url":null,"abstract":"In this paper, we describe the leading proposal to the IEEE 802.15.3a wireless personal area networks (WPAN) standardization effort. That proposal relies on ultra wideband (UWB) orthogonal frequency division multiplexing (OFDM). We then propose an enhancement of the baseline system that uses pulsed sinusoids instead of continuous sinusoids to send information in parallel over different sub-carriers. Pulsating OFDM symbols spreads the spectrum of the modulated signals in the frequency domain leading to enhanced performance in multipath fading environments and reduced complexity and power consumption. We also provide a summary of the differences between pulsed OFDM and generalized UWB-OFDM that was proposed earlier. Finally, we present simulation results to confirm the advantages of pulsed UWB OFDM over non-pulsed wideband OFDM.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"56 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128953733","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267822
Lei Feng, W. Namgoong
An ultra-wideband (UWB) receiver that jointly estimates and detects the received signal when the channel is unknown and the transmitter and receiver clocks are not synchronized is presented. Instead of using a RAKE receiver, which requires knowledge of the received monocycle, the entire receiver pulse is estimated directly. By formulating the time-varying pulse samples in each frame as the interpolated versions of a fixed template pulse, an extended Kalman filter (EKF) can be used to estimate the channel and the timing off-set. Because the EKF is computationally demanding, a simplified EKF with negligible loss in performance is also proposed. The EKF operates jointly with a per-survivor processing (PSP) unit to detect the received signal.
{"title":"Joint estimation and detection of UWB signals with timing offset error and unknown channel","authors":"Lei Feng, W. Namgoong","doi":"10.1109/UWBST.2003.1267822","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267822","url":null,"abstract":"An ultra-wideband (UWB) receiver that jointly estimates and detects the received signal when the channel is unknown and the transmitter and receiver clocks are not synchronized is presented. Instead of using a RAKE receiver, which requires knowledge of the received monocycle, the entire receiver pulse is estimated directly. By formulating the time-varying pulse samples in each frame as the interpolated versions of a fixed template pulse, an extended Kalman filter (EKF) can be used to estimate the channel and the timing off-set. Because the EKF is computationally demanding, a simplified EKF with negligible loss in performance is also proposed. The EKF operates jointly with a per-survivor processing (PSP) unit to detect the received signal.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"40 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120824987","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 : 1900-01-01DOI: 10.1109/UWBST.2003.1267856
Liuqing Yang, G. Giannakis
Interference from co-existing narrowband services constitutes the bottleneck of ultra-wideband (UWB) communications. To quantify interference and compare UWB systems on that basis, a general framework is needed. In this paper, we develop a unifying transmission and Rake reception model for UWB multiple access encompassing existing and novel spreading codes: direct-sequence (DS), digital single- and multi-carrier (SC/MC), time-hopping (TH), and combinations of them. Performance analysis is also carried out in closed-form. The relative merits of several UWB systems are further assessed by simulations, in narrowband interference (NBI), multipath, and additive white Gaussian noise (AWGN), for both matched-filter (MF), and minimum, mean-square error (MMSE) Rake receivers.
{"title":"Ultra-wideband multiple access: unification and narrowband interference analysis","authors":"Liuqing Yang, G. Giannakis","doi":"10.1109/UWBST.2003.1267856","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267856","url":null,"abstract":"Interference from co-existing narrowband services constitutes the bottleneck of ultra-wideband (UWB) communications. To quantify interference and compare UWB systems on that basis, a general framework is needed. In this paper, we develop a unifying transmission and Rake reception model for UWB multiple access encompassing existing and novel spreading codes: direct-sequence (DS), digital single- and multi-carrier (SC/MC), time-hopping (TH), and combinations of them. Performance analysis is also carried out in closed-form. The relative merits of several UWB systems are further assessed by simulations, in narrowband interference (NBI), multipath, and additive white Gaussian noise (AWGN), for both matched-filter (MF), and minimum, mean-square error (MMSE) Rake receivers.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125958577","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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