Pub Date : 2003-11-16DOI: 10.1109/UWBST.2003.1267892
A. Tomiki, T. Ogawa, T. Kobayashi
Ultra wideband (UWB) technologies have been developed to exploit a new spectrum resource in substances and to realize ultra-high-speed communication, high precision geolocation, and other applications. However, the interference effects had not previously been studied from UWB wireless systems to conventional narrowband wireless systems sharing the same frequency bands. This paper experimentally evaluates the interference from two kinds of UWB sources, namely a direct-sequence spread-spectrum UWB source and an impulse radio UWB source, to a 5- GHz digital transmission system. Statistical properties of the UWB sources and the average bit error rate degradation of the 5-GHz system are presented.
{"title":"Experimental evaluation of interference from UWB sources to a 5-GHz narrowband digital wireless transmission system","authors":"A. Tomiki, T. Ogawa, T. Kobayashi","doi":"10.1109/UWBST.2003.1267892","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267892","url":null,"abstract":"Ultra wideband (UWB) technologies have been developed to exploit a new spectrum resource in substances and to realize ultra-high-speed communication, high precision geolocation, and other applications. However, the interference effects had not previously been studied from UWB wireless systems to conventional narrowband wireless systems sharing the same frequency bands. This paper experimentally evaluates the interference from two kinds of UWB sources, namely a direct-sequence spread-spectrum UWB source and an impulse radio UWB source, to a 5- GHz digital transmission system. Statistical properties of the UWB sources and the average bit error rate degradation of the 5-GHz system are presented.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"27 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":"130431339","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267865
P. Runkle, J. McCorkle, T. Miller, M. Welborn
We show that because of drastic differences in the fading statistics between ultra wide bandwidth (UWB) multicarrier and direct sequence code division multiple access (DS-CDMA) approaches, DS easily scales to Gbps rates while multicarrier architectures have severe difficulty. Both DS-CDMA and orthogonal frequency division multiple access (OFDM) are well understood and proven modulation techniques in conventional (narrowband) commercial technologies (e.g. DS-CDMA in cell phones; OFDM in IEEE 802.11a/g). The maturity of these approaches, however, is vastly different when applied to ultrawideband (UWB) systems. Already implemented and operating in silicon, DS-CDMA architectures have proven to be the most mature and scaleable for UWB on both a theoretical as well as implementation basis. Among the proposed approaches before the IEEE 802.15.3a standards committee, the DS-CDMA transmitted waveform (which is the "thing" being standardized) is uniquely capable of serving the broadest diversity of applications. It can, for example, allow very low-cost low-power transmit-only devices (even at Gbps rates) because it requires no FFT or DAC or DSP. At the same time, receivers can incorporate varying degrees of DSP to provide scaleable power/cost versus performance. We present performance comparisons of DS-CDMA [Document IEEE.15-03/153r10, July 2003] vs. the proposed multiband MB-OFDM architecture [Document IEEE 802.15-03/267r0, July 2003] for outage range in a variety of multipath environments. Moreover, we describe how DS-CDMA UWB architectures can support robust and flexible multiuser capabilities, protect against in-band interference, and provide high-resolution ranging capabilities for safety-of-life applications.
我们发现，由于超宽带(UWB)多载波和直接序列码分多址(DS- cdma)方法在衰落统计方面的巨大差异，DS很容易扩展到Gbps速率，而多载波架构则有严重的困难。DS-CDMA和正交频分多址(OFDM)都是传统(窄带)商业技术(例如，移动电话中的DS-CDMA;IEEE 802.11a/g中的OFDM)。然而，这些方法的成熟度在应用于超宽带(UWB)系统时却大不相同。已经在硅上实现和运行的DS-CDMA架构在理论和实现基础上都被证明是超宽带最成熟和可扩展的。在IEEE 802.15.3a标准委员会提出的方法中，DS-CDMA传输波形(即正在标准化的“东西”)具有独特的能力，可以服务于最广泛的应用多样性。例如，它可以允许非常低成本的低功耗传输设备(即使在Gbps速率下)，因为它不需要FFT或DAC或DSP。同时，接收器可以结合不同程度的DSP，以提供可扩展的功率/成本与性能。我们提出了DS-CDMA [IEEE.15-03/153r10, July 2003]和提议的多频段MB-OFDM架构[IEEE 802.15-03/267r0, July 2003]在各种多路径环境下的中断范围的性能比较。此外，我们还描述了DS-CDMA超宽带架构如何支持强大而灵活的多用户功能，防止带内干扰，并为生命安全应用提供高分辨率测距功能。
{"title":"DS-CDMA: the modulation technology of choice for UWB communications","authors":"P. Runkle, J. McCorkle, T. Miller, M. Welborn","doi":"10.1109/UWBST.2003.1267865","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267865","url":null,"abstract":"We show that because of drastic differences in the fading statistics between ultra wide bandwidth (UWB) multicarrier and direct sequence code division multiple access (DS-CDMA) approaches, DS easily scales to Gbps rates while multicarrier architectures have severe difficulty. Both DS-CDMA and orthogonal frequency division multiple access (OFDM) are well understood and proven modulation techniques in conventional (narrowband) commercial technologies (e.g. DS-CDMA in cell phones; OFDM in IEEE 802.11a/g). The maturity of these approaches, however, is vastly different when applied to ultrawideband (UWB) systems. Already implemented and operating in silicon, DS-CDMA architectures have proven to be the most mature and scaleable for UWB on both a theoretical as well as implementation basis. Among the proposed approaches before the IEEE 802.15.3a standards committee, the DS-CDMA transmitted waveform (which is the \"thing\" being standardized) is uniquely capable of serving the broadest diversity of applications. It can, for example, allow very low-cost low-power transmit-only devices (even at Gbps rates) because it requires no FFT or DAC or DSP. At the same time, receivers can incorporate varying degrees of DSP to provide scaleable power/cost versus performance. We present performance comparisons of DS-CDMA [Document IEEE.15-03/153r10, July 2003] vs. the proposed multiband MB-OFDM architecture [Document IEEE 802.15-03/267r0, July 2003] for outage range in a variety of multipath environments. Moreover, we describe how DS-CDMA UWB architectures can support robust and flexible multiuser capabilities, protect against in-band interference, and provide high-resolution ranging capabilities for safety-of-life applications.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"47 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":"114957324","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267869
Youngjin Park, Kwanho Kim, Sung-Bae Cho, Dong-Wook Yoo, Dong-Gi Youn, Young-Kyung Jeong
A ground penetrating radar (GPR) using short-pulse is developed in order to detect small and shallow metal objects buried under the ground. A bistatic mode in which the GPR system uses separate transmitting and receiving antennas is applied. A modified fat dipole antenna is developed for the transmitting and receiving antennas,. The prototype of the system is tested in real environment and 2D visualization of raw data is achieved. It is shown that the developed system has a good ability in detecting underground metal objects, even small targets of several centimeters.
{"title":"Development of a UWB GPR system for detecting small objects buried under ground","authors":"Youngjin Park, Kwanho Kim, Sung-Bae Cho, Dong-Wook Yoo, Dong-Gi Youn, Young-Kyung Jeong","doi":"10.1109/UWBST.2003.1267869","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267869","url":null,"abstract":"A ground penetrating radar (GPR) using short-pulse is developed in order to detect small and shallow metal objects buried under the ground. A bistatic mode in which the GPR system uses separate transmitting and receiving antennas is applied. A modified fat dipole antenna is developed for the transmitting and receiving antennas,. The prototype of the system is tested in real environment and 2D visualization of raw data is achieved. It is shown that the developed system has a good ability in detecting underground metal objects, even small targets of several centimeters.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"21 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":"133268668","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267866
R. Fontana, E. Richley, J. Barney
Ultra wideband (UWB) technology has been shown to possess unique advantages for precision localization applications. The use of short pulse RF waveforms provides inherent precision for time difference of arrival measurements, as well immunity to multipath effects in indoor applications. This paper describes an FCC-approved, commercial UWB precision asset location system which is being used for tracking of high valued assets in hospitals, factories and in military facilities.
{"title":"Commercialization of an ultra wideband precision asset location system","authors":"R. Fontana, E. Richley, J. Barney","doi":"10.1109/UWBST.2003.1267866","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267866","url":null,"abstract":"Ultra wideband (UWB) technology has been shown to possess unique advantages for precision localization applications. The use of short pulse RF waveforms provides inherent precision for time difference of arrival measurements, as well immunity to multipath effects in indoor applications. This paper describes an FCC-approved, commercial UWB precision asset location system which is being used for tracking of high valued assets in hospitals, factories and in military facilities.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"602 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":"116460981","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267793
A. Light
The goal of the Defense Advanced Research Projects Agency's (DARPA) Networking in Extreme Environments (NETEX) program is to create a wireless networking technology for the military user that enables robust connectivity in harsh environments and support its integration into new and emerging sensor and communication systems. Phase 1, resulted in a thorough understanding of the effects of ultrawideband (UWB) system operation on existing military spectrum users based on modeling, simulation, and measurements. In order to accomplish this task the DARPA Advanced Technology Office (ATO) procured a set of UWB emitters and broadband antennas to use as interference sources and contracted with the Naval Air Warfare Center Aircraft Division (NAWC AD) Electromagnetic Environmental Effects (E3) Division to provide candidate victim systems from the existing (legacy) US naval aircraft and shipboard inventory for testing. Testing was conducted on seventeen legacy systems during the period of October 2002 through March 2003. The purpose of this paper is to provide a brief overview of the results of these tests. This paper will provide a brief discussion of the UWB emissions as described by the US Federal Communications Commission (FCC) and describe the generic UWB emitter used for these tests. It will then provide a discussion of the results as they apply to the purpose of the NETEX program.
{"title":"NETEX TASK 1: measured effects of ultrawideband (UWB) emitters on existing narrowband military receivers","authors":"A. Light","doi":"10.1109/UWBST.2003.1267793","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267793","url":null,"abstract":"The goal of the Defense Advanced Research Projects Agency's (DARPA) Networking in Extreme Environments (NETEX) program is to create a wireless networking technology for the military user that enables robust connectivity in harsh environments and support its integration into new and emerging sensor and communication systems. Phase 1, resulted in a thorough understanding of the effects of ultrawideband (UWB) system operation on existing military spectrum users based on modeling, simulation, and measurements. In order to accomplish this task the DARPA Advanced Technology Office (ATO) procured a set of UWB emitters and broadband antennas to use as interference sources and contracted with the Naval Air Warfare Center Aircraft Division (NAWC AD) Electromagnetic Environmental Effects (E3) Division to provide candidate victim systems from the existing (legacy) US naval aircraft and shipboard inventory for testing. Testing was conducted on seventeen legacy systems during the period of October 2002 through March 2003. The purpose of this paper is to provide a brief overview of the results of these tests. This paper will provide a brief discussion of the UWB emissions as described by the US Federal Communications Commission (FCC) and describe the generic UWB emitter used for these tests. It will then provide a discussion of the results as they apply to the purpose of the NETEX program.","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":"129388955","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267858
Donald, Clabaugh, Michael A. Temple, R. Raines, C. M. Canadeo
This paper extends previous UMB multiple access (MA) performance characterization by combining pseudorandomly coded, time hopped pulse position modulation (TH-PPM) with 4-ary biorthogonal communication signaling. Communication performance for the hybrid TH-BPPM technique is first validated for a single user operating over an AWGN channel. Single user results are then extended and MA performance characterized for both synchronous and asynchronous networks containing up to 15 users. In both cases, the proposed 4-ary TH-BPPM technique with Gold coding achieves nearly identical performance as previously demonstrated MA methods employing binary TH-PPM. A key benefit afforded by the 4-ary TH-BPPM technique, given fixed average power and symbol length constraints, is a doubling of the effective data rate while achieving identical bit error rate performance.
{"title":"UWB multiple access performance using time hopped pulse position modulation with biorthogonal signaling","authors":"Donald, Clabaugh, Michael A. Temple, R. Raines, C. M. Canadeo","doi":"10.1109/UWBST.2003.1267858","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267858","url":null,"abstract":"This paper extends previous UMB multiple access (MA) performance characterization by combining pseudorandomly coded, time hopped pulse position modulation (TH-PPM) with 4-ary biorthogonal communication signaling. Communication performance for the hybrid TH-BPPM technique is first validated for a single user operating over an AWGN channel. Single user results are then extended and MA performance characterized for both synchronous and asynchronous networks containing up to 15 users. In both cases, the proposed 4-ary TH-BPPM technique with Gold coding achieves nearly identical performance as previously demonstrated MA methods employing binary TH-PPM. A key benefit afforded by the 4-ary TH-BPPM technique, given fixed average power and symbol length constraints, is a doubling of the effective data rate while achieving identical bit error rate performance.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"47 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":"133852607","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267859
Liuqing Yang, G. Giannakis
The growing interest towards ultra-wideband (UWB) radios stems from their attractive features that include low-power low-complexity baseband operation, rich multipath diversity, and the potential of enhanced user capacity. Existing baseband spreading codes are not flexible in handling narrowband interference (NBI), which emerges when UWB radios overlay co-existing systems. In this paper, we introduce two novel spreading codes, for baseband UWB multiple access. Utilizing a single or multiple digital subcarriers (SC or MC), these codes give rise to multi-band UWB systems. In addition to providing flexibility in handling NBI, SC- and MC-UWB codes also enable full multipath diversity, and maximum coding gains. Equally attractive is their capability to reduce the number of interfering users, with simple matched filter operations.
{"title":"Digital-carrier multi-band user codes for baseband UWB multiple access","authors":"Liuqing Yang, G. Giannakis","doi":"10.1109/UWBST.2003.1267859","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267859","url":null,"abstract":"The growing interest towards ultra-wideband (UWB) radios stems from their attractive features that include low-power low-complexity baseband operation, rich multipath diversity, and the potential of enhanced user capacity. Existing baseband spreading codes are not flexible in handling narrowband interference (NBI), which emerges when UWB radios overlay co-existing systems. In this paper, we introduce two novel spreading codes, for baseband UWB multiple access. Utilizing a single or multiple digital subcarriers (SC or MC), these codes give rise to multi-band UWB systems. In addition to providing flexibility in handling NBI, SC- and MC-UWB codes also enable full multipath diversity, and maximum coding gains. Equally attractive is their capability to reduce the number of interfering users, with simple matched filter operations.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"29 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":"128870339","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267864
R.A. Jones, D.H. Smith, S. Perkins
Spreading codes are an essential component of the operation of a direct sequence code division multiple access (DS- CDMA) system. The need for efficient assignment of spreading codes to transmitters can arise for two reasons. Firstly, if the number of codes available is less than the number of users, then the codes must be assigned to achieve satisfactory re-use distances. Secondly, if the correlation properties of code pairs differ from pair to pair, then assignment can be used to ensure that close users have the best correlation properties. Many code classes (e.g. Gold codes) do not display this variation from pair to pair, but others (particularly those designed for quasisynchronous operation) do. The variation can be exploited to improve the overall performance. In this paper an adaption to code assignment of the type of algorithm used for frequency assignment is described, and the potential benefits explored.
{"title":"Assignment of spreading codes in DS-CDMA UWB systems","authors":"R.A. Jones, D.H. Smith, S. Perkins","doi":"10.1109/UWBST.2003.1267864","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267864","url":null,"abstract":"Spreading codes are an essential component of the operation of a direct sequence code division multiple access (DS- CDMA) system. The need for efficient assignment of spreading codes to transmitters can arise for two reasons. Firstly, if the number of codes available is less than the number of users, then the codes must be assigned to achieve satisfactory re-use distances. Secondly, if the correlation properties of code pairs differ from pair to pair, then assignment can be used to ensure that close users have the best correlation properties. Many code classes (e.g. Gold codes) do not display this variation from pair to pair, but others (particularly those designed for quasisynchronous operation) do. The variation can be exploited to improve the overall performance. In this paper an adaption to code assignment of the type of algorithm used for frequency assignment is described, and the potential benefits explored.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"48 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":"126475417","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267875
Xiaoming Peng, F. Chin, A. Madhukumar
By dividing the available spectrum into multiple bands, the multi-band ultra-wideband (UWB) system possesses many advantages, such as lower design complexity, lower power consumption, lower cost, improving spectral flexibility and worldwide compliance. RAKE receiver, as one of the most popular solution, is used to capture multipath energy and mitigate inter-symbol interference (ISI). In this paper, we propose an over-sampling multi-channel equalizer per sub-band for a multi-band UWB system. The over-sampling multi-channel equalizer provides more effective ISI suppression compared with RAKE receiver when operating in channels with large delay spread. In the presence of multiple uncoordinated piconets, the choice of time-frequency hopping sequence for the proposed equalizer has been investigated. The intensive simulations have been performed and the results show that a random sequencing among piconets is sufficient for the proposed equalizer to support multiple piconets.
{"title":"Performance studies of an over-sampling multi-channel equalizer for a multi-band UWB system","authors":"Xiaoming Peng, F. Chin, A. Madhukumar","doi":"10.1109/UWBST.2003.1267875","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267875","url":null,"abstract":"By dividing the available spectrum into multiple bands, the multi-band ultra-wideband (UWB) system possesses many advantages, such as lower design complexity, lower power consumption, lower cost, improving spectral flexibility and worldwide compliance. RAKE receiver, as one of the most popular solution, is used to capture multipath energy and mitigate inter-symbol interference (ISI). In this paper, we propose an over-sampling multi-channel equalizer per sub-band for a multi-band UWB system. The over-sampling multi-channel equalizer provides more effective ISI suppression compared with RAKE receiver when operating in channels with large delay spread. In the presence of multiple uncoordinated piconets, the choice of time-frequency hopping sequence for the proposed equalizer has been investigated. The intensive simulations have been performed and the results show that a random sequencing among piconets is sufficient for the proposed equalizer to support multiple piconets.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"53 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":"130913137","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 : 2003-11-16DOI: 10.1109/UWBST.2003.1267878
Rodger Ziemer, Mark Wickert, Tom Williams
In this paper we compare the performance of two multiple access modulation schemes for use in a secure wireless sensor network. The first is binary direct sequence spread-spectrum (DSSS) while the second is ultra-wide-band pulse position modulation (UWB-PPM). Parameter values were chosen to allow each system to operate with equal bandwidths. For UWB to give a performance competitive to DSSS on an equal bandwidth and equal energy per bit basis, it is necessary to go to higher modulation orders than binary. Thus, one must give up part of the competitive advantage of UWB, namely simplicity, to obtain performance comparable to DSSS.
{"title":"A comparison between UWB and DSSS for use in a multiple access secure wireless sensor network","authors":"Rodger Ziemer, Mark Wickert, Tom Williams","doi":"10.1109/UWBST.2003.1267878","DOIUrl":"https://doi.org/10.1109/UWBST.2003.1267878","url":null,"abstract":"In this paper we compare the performance of two multiple access modulation schemes for use in a secure wireless sensor network. The first is binary direct sequence spread-spectrum (DSSS) while the second is ultra-wide-band pulse position modulation (UWB-PPM). Parameter values were chosen to allow each system to operate with equal bandwidths. For UWB to give a performance competitive to DSSS on an equal bandwidth and equal energy per bit basis, it is necessary to go to higher modulation orders than binary. Thus, one must give up part of the competitive advantage of UWB, namely simplicity, to obtain performance comparable to DSSS.","PeriodicalId":218975,"journal":{"name":"IEEE Conference on Ultra Wideband Systems and Technologies, 2003","volume":"32 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":"114035361","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：