Pub Date : 2001-07-08DOI: 10.1109/VETECF.2000.887110
C. C. Martin, J. Winters, N. Sollenberger
We present results from the first field test to characterize the mobile multiple-input multiple-output (MIMO) radio channel. We measured the capacity, normalized to a single antenna system, and fading correlation between antennas of a system with 4 antennas on a laptop computer and 4 antennas at a rooftop base station. The field test results show that close to the theoretical 4 times the capacity of a single antenna system can be supported in a 30 kHz channel with dual-polarized, spatially-separated base station and terminal antennas. For this 4/spl times/4 MIMO system the degradation in capacity due to fading correlation is small even with correlation coefficients as high as 0.5. Close to the theoretical 4 times capacity was achieved under a variety of test runs, including suburban drives, highway drives, and pedestrian routes, both close to the base station and inside a house a few miles from the base station. Therefore, these results show that it may be possible to provide in excess of 1 Mbps in a 200 kHz mobile radio channel (for the 3G wireless TDMA system EDGE) with the appropriate base station antennas.
{"title":"Multiple-input multiple-output (MIMO) radio channel measurements","authors":"C. C. Martin, J. Winters, N. Sollenberger","doi":"10.1109/VETECF.2000.887110","DOIUrl":"https://doi.org/10.1109/VETECF.2000.887110","url":null,"abstract":"We present results from the first field test to characterize the mobile multiple-input multiple-output (MIMO) radio channel. We measured the capacity, normalized to a single antenna system, and fading correlation between antennas of a system with 4 antennas on a laptop computer and 4 antennas at a rooftop base station. The field test results show that close to the theoretical 4 times the capacity of a single antenna system can be supported in a 30 kHz channel with dual-polarized, spatially-separated base station and terminal antennas. For this 4/spl times/4 MIMO system the degradation in capacity due to fading correlation is small even with correlation coefficients as high as 0.5. Close to the theoretical 4 times capacity was achieved under a variety of test runs, including suburban drives, highway drives, and pedestrian routes, both close to the base station and inside a house a few miles from the base station. Therefore, these results show that it may be possible to provide in excess of 1 Mbps in a 200 kHz mobile radio channel (for the 3G wireless TDMA system EDGE) with the appropriate base station antennas.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116057566","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 : 2000-12-01DOI: 10.1109/VETECF.2000.886657
Shiao-Li Tsao
Generalized processor sharing (GPS) and earliest-due-date (EDD) algorithms are two work conserving service disciplines to provide bounded delay and fair queuing for packet data network. Unfortunately, these algorithms can not apply to a wireless network directly due to the location-dependent errors in mobile environment. A number of studies enhanced GPS-like algorithms to facilitate the wireless environment, but the studies of EDD scheduling algorithms on a wireless network are almost ignored. Unlike GPS-like algorithms which guarantee a delay bound based on the weight that is tightly coupled to a reserved service rate, EDD and its extensions such as delay-EDD and jitter-EDD policies allow the separation of delay, delay-jitters and throughput guarantees for a particular data flow. In this paper, we explore EDD and delay-EDD policies, and present their extensions. Simulation results show that our proposed algorithms can achieve short term, long term fairness, and QoS guarantees on wireless networks.
{"title":"Extending earliest-due-date scheduling algorithms for wireless networks with location-dependent errors","authors":"Shiao-Li Tsao","doi":"10.1109/VETECF.2000.886657","DOIUrl":"https://doi.org/10.1109/VETECF.2000.886657","url":null,"abstract":"Generalized processor sharing (GPS) and earliest-due-date (EDD) algorithms are two work conserving service disciplines to provide bounded delay and fair queuing for packet data network. Unfortunately, these algorithms can not apply to a wireless network directly due to the location-dependent errors in mobile environment. A number of studies enhanced GPS-like algorithms to facilitate the wireless environment, but the studies of EDD scheduling algorithms on a wireless network are almost ignored. Unlike GPS-like algorithms which guarantee a delay bound based on the weight that is tightly coupled to a reserved service rate, EDD and its extensions such as delay-EDD and jitter-EDD policies allow the separation of delay, delay-jitters and throughput guarantees for a particular data flow. In this paper, we explore EDD and delay-EDD policies, and present their extensions. Simulation results show that our proposed algorithms can achieve short term, long term fairness, and QoS guarantees on wireless networks.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"8 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113956886","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 : 2000-12-01DOI: 10.1109/VETECF.2000.887098
H. C. Espinosa, J. Penín, J. Fonollosa
This paper presents a performance evaluation of space-time block coding (STBC) employing a realistic mobile radio channel model in macrocellular and urban environments. The bit error rate (BER) is computed by Monte-Carlo simulations in the down-link to evaluate its sensitivity to channel correlation. We consider a horizontal uniform linear array at the base station (BS) formed by up to four antenna elements, and one and two uncorrelated antenna elements at the mobile station (MS). The channel model includes the probability density function (pdf) of the azimuth and delay of the impinging waves and their expected power conditioned on the azimuth and delay. The statistical properties of the model are extracted from macrocellular measurements made in urban environments. Simulation results show that the use of STBC can provide significant gains with acceptable sensitivity to the channel correlation under realistic conditions.
{"title":"Performance evaluation of space-time block coding using a realistic mobile radio channel model","authors":"H. C. Espinosa, J. Penín, J. Fonollosa","doi":"10.1109/VETECF.2000.887098","DOIUrl":"https://doi.org/10.1109/VETECF.2000.887098","url":null,"abstract":"This paper presents a performance evaluation of space-time block coding (STBC) employing a realistic mobile radio channel model in macrocellular and urban environments. The bit error rate (BER) is computed by Monte-Carlo simulations in the down-link to evaluate its sensitivity to channel correlation. We consider a horizontal uniform linear array at the base station (BS) formed by up to four antenna elements, and one and two uncorrelated antenna elements at the mobile station (MS). The channel model includes the probability density function (pdf) of the azimuth and delay of the impinging waves and their expected power conditioned on the azimuth and delay. The statistical properties of the model are extracted from macrocellular measurements made in urban environments. Simulation results show that the use of STBC can provide significant gains with acceptable sensitivity to the channel correlation under realistic conditions.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114485427","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 : 2000-12-01DOI: 10.1109/VETECF.2000.886661
C. Comaniciu, N. Mandayam, D. Famolari, P. Agrawal
We propose a unified framework for access control in third generation (3G) CDMA systems. It is implemented as a two level control: at a call arrival time scale (admission control) and at a time slot (frame duration) scale (flow control). The admission control guarantees that QoS requirements in terms of bit error rates and delays can be met for all types of calls in the system: voice, video, Poisson data and Web browsing sessions. The flow control mechanism delivers the QoS guarantees by scheduling the available resources among the real time and non-real time users. Three different approaches for implementing the flow control mechanism are proposed and compared. The impact of non-real time traffic specifications and of real time traffic burstiness on the system capacity is discussed.
{"title":"QoS guarantees for third generation (3G) CDMA systems via admission and flow control","authors":"C. Comaniciu, N. Mandayam, D. Famolari, P. Agrawal","doi":"10.1109/VETECF.2000.886661","DOIUrl":"https://doi.org/10.1109/VETECF.2000.886661","url":null,"abstract":"We propose a unified framework for access control in third generation (3G) CDMA systems. It is implemented as a two level control: at a call arrival time scale (admission control) and at a time slot (frame duration) scale (flow control). The admission control guarantees that QoS requirements in terms of bit error rates and delays can be met for all types of calls in the system: voice, video, Poisson data and Web browsing sessions. The flow control mechanism delivers the QoS guarantees by scheduling the available resources among the real time and non-real time users. Three different approaches for implementing the flow control mechanism are proposed and compared. The impact of non-real time traffic specifications and of real time traffic burstiness on the system capacity is discussed.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121411157","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 : 2000-12-01DOI: 10.1109/VETECF.2000.886812
V. Kaul, Wenfang Zhang, R. Yates
Third generation (3G) wireless systems are being developed to increase system capacity and support innovative broadband multimedia services. Wideband CDMA (WCDMA) is one such system where the air interfaces need to support services with different bit-error rates, delay, and rates. We have developed a multi-cell simulation platform implementing user mobility and detailed radio channels to study the impact of mobile users, fading and propagation effects, and other-cell interference on waveform level processing. Our study aims at analyzing and improving algorithms at the link level (interference cancelation) and system level (power control and handoff) for WCDMA systems.
{"title":"Multicell WCDMA signal processing simulation","authors":"V. Kaul, Wenfang Zhang, R. Yates","doi":"10.1109/VETECF.2000.886812","DOIUrl":"https://doi.org/10.1109/VETECF.2000.886812","url":null,"abstract":"Third generation (3G) wireless systems are being developed to increase system capacity and support innovative broadband multimedia services. Wideband CDMA (WCDMA) is one such system where the air interfaces need to support services with different bit-error rates, delay, and rates. We have developed a multi-cell simulation platform implementing user mobility and detailed radio channels to study the impact of mobile users, fading and propagation effects, and other-cell interference on waveform level processing. Our study aims at analyzing and improving algorithms at the link level (interference cancelation) and system level (power control and handoff) for WCDMA systems.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127735134","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 : 2000-12-01DOI: 10.1109/VETECF.2000.886857
G. Park, Sukhyon Yoon, C. Kang, D. Hong
The several implementation methods of the MAP decoder are proposed. By using the novel time-shared process of a pipe-lined structure, the restriction of recursion process on the state metric can be efficiently conquered, and the complexity of the MAP decoder can be reduced to the order of a SOYA (soft output Viterbi algorithm) decoder. An efficient structure for the controller is also proposed for the cdma-2000 system. The designed MAP decoder using a block-wire MAP algorithm has been implemented in only one 20,000 gate circuit. It has been validated by VHDL, which has been compared with the results of the initial simulation (C programs). The designed decoder has A 300 kbps decoding processing ability with 8 times iterations on a FPGA circuit, and just has a deviation of about 01-0.2 dB over the ideal MAP decoder; even if all hardware environments were considered.
{"title":"An implementation method of a turbo-code decoder using a block-wise MAP algorithm","authors":"G. Park, Sukhyon Yoon, C. Kang, D. Hong","doi":"10.1109/VETECF.2000.886857","DOIUrl":"https://doi.org/10.1109/VETECF.2000.886857","url":null,"abstract":"The several implementation methods of the MAP decoder are proposed. By using the novel time-shared process of a pipe-lined structure, the restriction of recursion process on the state metric can be efficiently conquered, and the complexity of the MAP decoder can be reduced to the order of a SOYA (soft output Viterbi algorithm) decoder. An efficient structure for the controller is also proposed for the cdma-2000 system. The designed MAP decoder using a block-wire MAP algorithm has been implemented in only one 20,000 gate circuit. It has been validated by VHDL, which has been compared with the results of the initial simulation (C programs). The designed decoder has A 300 kbps decoding processing ability with 8 times iterations on a FPGA circuit, and just has a deviation of about 01-0.2 dB over the ideal MAP decoder; even if all hardware environments were considered.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123661308","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 : 2000-12-01DOI: 10.1109/VETECF.2000.886662
R. Sinha, R. Yates
This paper introduces a new spread-spectrum multiple access scheme based on multicarrier multilevel frequency shift keying (MC-MFSK). This new approach shares some of the advantages of both frequency-hopping (FH) and direct-sequence (DS) spread-spectrum systems, while overcoming some of their disadvantages. The MC-MFSK scheme transmits a symbol in parallel over multiple sub-channels using OFDM (orthogonal frequency division multiplexing). MC-MFSK has the desirable properties of frequency diversity, near-far resistance, and multipath resolvability. Arguably, this not only make MC-MFSK a simple yet competitive spread-spectrum technology but also make it a strong candidate for future high-speed wireless systems.
{"title":"An OFDM based multicarrier MFSK system","authors":"R. Sinha, R. Yates","doi":"10.1109/VETECF.2000.886662","DOIUrl":"https://doi.org/10.1109/VETECF.2000.886662","url":null,"abstract":"This paper introduces a new spread-spectrum multiple access scheme based on multicarrier multilevel frequency shift keying (MC-MFSK). This new approach shares some of the advantages of both frequency-hopping (FH) and direct-sequence (DS) spread-spectrum systems, while overcoming some of their disadvantages. The MC-MFSK scheme transmits a symbol in parallel over multiple sub-channels using OFDM (orthogonal frequency division multiplexing). MC-MFSK has the desirable properties of frequency diversity, near-far resistance, and multipath resolvability. Arguably, this not only make MC-MFSK a simple yet competitive spread-spectrum technology but also make it a strong candidate for future high-speed wireless systems.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133795417","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 : 2000-12-01DOI: 10.1109/VETECF.2000.887063
C. Saraydar, N. Mandayam, D. Goodman
The wireless communications community has a well established understanding of voice services in contrast to the emerging data services. Traditionally, voice service quality is regarded acceptable as long as it exceeds some subjective level of signal-to-noise ratio (SIR). While this approach works well for voice, it may not be an appropriate measure of QoS for data services. In earlier work, we have applied microeconomic principles to model the QoS requirements of data services in which the terminal satisfaction (utility) is mapped onto a function of the SIR obtained at the base station (BS) and the power expended to achieve that SIR. We have investigated distributed power control in a single-cell system where each terminal maximizes its utility measured in bits/Joule by adjusting its transmit power. In this work, we extend the previous work to a multicell CDMA system. We show that an equilibrium vector of powers emerge as a result of independent utility maximizing behavior by each user under an arbitrary base station assignment. We also discuss a pricing scheme by which each terminal ends up transmitting lower power in return for increased utility. A distributed algorithm is provided by which terminals achieve their equilibrium power levels. Joint transmit power control and BS assignment that maximizes utility is also studied.
{"title":"Power control in a multicell CDMA data system using pricing","authors":"C. Saraydar, N. Mandayam, D. Goodman","doi":"10.1109/VETECF.2000.887063","DOIUrl":"https://doi.org/10.1109/VETECF.2000.887063","url":null,"abstract":"The wireless communications community has a well established understanding of voice services in contrast to the emerging data services. Traditionally, voice service quality is regarded acceptable as long as it exceeds some subjective level of signal-to-noise ratio (SIR). While this approach works well for voice, it may not be an appropriate measure of QoS for data services. In earlier work, we have applied microeconomic principles to model the QoS requirements of data services in which the terminal satisfaction (utility) is mapped onto a function of the SIR obtained at the base station (BS) and the power expended to achieve that SIR. We have investigated distributed power control in a single-cell system where each terminal maximizes its utility measured in bits/Joule by adjusting its transmit power. In this work, we extend the previous work to a multicell CDMA system. We show that an equilibrium vector of powers emerge as a result of independent utility maximizing behavior by each user under an arbitrary base station assignment. We also discuss a pricing scheme by which each terminal ends up transmitting lower power in return for increased utility. A distributed algorithm is provided by which terminals achieve their equilibrium power levels. Joint transmit power control and BS assignment that maximizes utility is also studied.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126798908","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 : 2000-12-01DOI: 10.1109/VETECF.2000.886261
Shiao-Li Tsao
The general packet radio service (GPRS) is a packet data service for phase 2+ of Global System for Mobile Communications (GSM). It not only defines the packet-switch data service on top of GSM, but also tries to provide quality of service (QoS) guarantees on data flows. Although the technical specifications define a number of QoS parameters and service classes, the QoS control mechanisms and procedures are out of the specifications. We elaborate the admission control, resource reservation, policing, and scheduling mechanisms, and apply them to different level of components in a GPRS data network. Integrating the proposed QoS control procedures on different GPRS nodes, the QoS requirements specified in a service contract can be easily achieved.
{"title":"Quality of service control over GPRS data network","authors":"Shiao-Li Tsao","doi":"10.1109/VETECF.2000.886261","DOIUrl":"https://doi.org/10.1109/VETECF.2000.886261","url":null,"abstract":"The general packet radio service (GPRS) is a packet data service for phase 2+ of Global System for Mobile Communications (GSM). It not only defines the packet-switch data service on top of GSM, but also tries to provide quality of service (QoS) guarantees on data flows. Although the technical specifications define a number of QoS parameters and service classes, the QoS control mechanisms and procedures are out of the specifications. We elaborate the admission control, resource reservation, policing, and scheduling mechanisms, and apply them to different level of components in a GPRS data network. Integrating the proposed QoS control procedures on different GPRS nodes, the QoS requirements specified in a service contract can be easily achieved.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127494612","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 : 2000-12-01DOI: 10.1109/VETECF.2000.883242
D. Kawamoto, T. Kawase, M. Hashirao, I. Sasase
In order to reduce the angle component of measurement noise (cross-range errors), we propose a multisensor tracking system with an airborne and a stationary sensor. The airborne sensor is a phased array sensor which an aircraft carries. In the proposed system the airborne sensor moves in order to keep the pencil beams from the airborne and stationary sensors orthogonal. Therefore the proposed system minimizes the cross-range errors and a high tracking quality could be obtained. Simulation results are given for a comparison of the tracking performance of our proposed system with that of conventional systems.
{"title":"The multisensor tracking system with the airborne sensor to mitigate the effect of cross-range errors","authors":"D. Kawamoto, T. Kawase, M. Hashirao, I. Sasase","doi":"10.1109/VETECF.2000.883242","DOIUrl":"https://doi.org/10.1109/VETECF.2000.883242","url":null,"abstract":"In order to reduce the angle component of measurement noise (cross-range errors), we propose a multisensor tracking system with an airborne and a stationary sensor. The airborne sensor is a phased array sensor which an aircraft carries. In the proposed system the airborne sensor moves in order to keep the pencil beams from the airborne and stationary sensors orthogonal. Therefore the proposed system minimizes the cross-range errors and a high tracking quality could be obtained. Simulation results are given for a comparison of the tracking performance of our proposed system with that of conventional systems.","PeriodicalId":186198,"journal":{"name":"Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132856727","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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