Pub Date : 2005-09-11DOI: 10.1109/PIMRC.2005.1651648
G. Jakllari, Ioannis Broustis, T. Korakis, S. Krishnamurthy, L. Tassiulas
The deployment of traditional higher layer protocols (especially the IEEE 802.11 MAC protocol at the MAC layer) with directional antennae could lead to problems from an increased number of collisions; this effect is primarily seen due to three specific effects: (i) an increase in the number of hidden terminals; (ii) the problem of deafness and, (iii) a difficulty in determining the locations of neighbors. In this work we propose a new MAC protocol that incorporates circular RTS and CTS transmissions. We show that the circular transmission of the control messages helps avoid collisions of both DATA and ACK packets from hidden terminals. Our protocol intelligently determines the directions in which the control messages ought to be transmitted so as to eliminate redundant transmissions in any given direction. We perform extensive simulations and analyze the obtained results in order to compare our scheme with previously proposed protocols that have been proposed for use in directional antenna equipped ad hoc networks. Our simulation results clearly demonstrate the benefits of incorporating both circular RTS and CTS messages in terms of the achieved aggregate throughput
{"title":"Handling asymmetry in gain in directional antenna equipped ad hoc networks","authors":"G. Jakllari, Ioannis Broustis, T. Korakis, S. Krishnamurthy, L. Tassiulas","doi":"10.1109/PIMRC.2005.1651648","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651648","url":null,"abstract":"The deployment of traditional higher layer protocols (especially the IEEE 802.11 MAC protocol at the MAC layer) with directional antennae could lead to problems from an increased number of collisions; this effect is primarily seen due to three specific effects: (i) an increase in the number of hidden terminals; (ii) the problem of deafness and, (iii) a difficulty in determining the locations of neighbors. In this work we propose a new MAC protocol that incorporates circular RTS and CTS transmissions. We show that the circular transmission of the control messages helps avoid collisions of both DATA and ACK packets from hidden terminals. Our protocol intelligently determines the directions in which the control messages ought to be transmitted so as to eliminate redundant transmissions in any given direction. We perform extensive simulations and analyze the obtained results in order to compare our scheme with previously proposed protocols that have been proposed for use in directional antenna equipped ad hoc networks. Our simulation results clearly demonstrate the benefits of incorporating both circular RTS and CTS messages in terms of the achieved aggregate throughput","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130767420","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651931
J. Figueiras, H. Schwefel, I. Kovács
Accurate positioning of wireless devices using short-range link-technologies is interesting for a number of applications including tracking, location-based services, and context sensitive networking. In this paper, accuracy and timing aspects for an indoor positioning method based on triangulation using signal strength measurements of Bluetooth links are analyzed experimentally and via simulation models. In the approach chosen in this paper, the delay to obtain signal strength measurements is determined by complex interactions of the Bluetooth inquiry procedure, which are analyzed in detailed simulation experiments. The location accuracy analysis is performed experimentally for the setting of an indoor corridor scenario including multi-path propagation properties
{"title":"Accuracy and timing aspects of location information based on signal-strength measurements in Bluetooth","authors":"J. Figueiras, H. Schwefel, I. Kovács","doi":"10.1109/PIMRC.2005.1651931","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651931","url":null,"abstract":"Accurate positioning of wireless devices using short-range link-technologies is interesting for a number of applications including tracking, location-based services, and context sensitive networking. In this paper, accuracy and timing aspects for an indoor positioning method based on triangulation using signal strength measurements of Bluetooth links are analyzed experimentally and via simulation models. In the approach chosen in this paper, the delay to obtain signal strength measurements is determined by complex interactions of the Bluetooth inquiry procedure, which are analyzed in detailed simulation experiments. The location accuracy analysis is performed experimentally for the setting of an indoor corridor scenario including multi-path propagation properties","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132974778","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651465
N. Cassiau
In the context of a fixed wireless downlink transmission, SDMA (spatial division multiple access) is a serious candidate to allow several users to communicate simultaneously. We study here a recently developed algorithm, first presented by Joel Bertrand in [Bertrand03]. The algorithm ensures a given QoS (quality of service) for all users in a multipath environment. We show that with a low number of iterations, a good QoS can be reached in an channel with up to 3 paths per user. This study was performed in the context of the IST-STRIKE project ([STRIKE])
{"title":"Downlink SDMA for Hiperman Communications: The Obele Algorithm.","authors":"N. Cassiau","doi":"10.1109/PIMRC.2005.1651465","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651465","url":null,"abstract":"In the context of a fixed wireless downlink transmission, SDMA (spatial division multiple access) is a serious candidate to allow several users to communicate simultaneously. We study here a recently developed algorithm, first presented by Joel Bertrand in [Bertrand03]. The algorithm ensures a given QoS (quality of service) for all users in a multipath environment. We show that with a low number of iterations, a good QoS can be reached in an channel with up to 3 paths per user. This study was performed in the context of the IST-STRIKE project ([STRIKE])","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131983558","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651801
C. Ball, K. Ivanov
Channel capacity and spectrum efficiency are widely used to compare the performance of different wireless technologies in cellular packet data networks. Recent studies revealed strong impact of traffic modeling on these key performance indicators. In this paper two generic traffic models are used to evaluate the spectrum efficiency for widespread GSM/EDGE and the upcoming new broadband OFDM IEEE 802.16 WiMax system. The first traffic model assumes an equal mean packet data call duration (EMPC-D) whereas the second one assumes an equal mean packet call data volume (EMPC-V) per subscriber. The evaluation procedure is based on a newly proposed combined analytical/geometric approach for rapid performance estimation in cellular packet data networks. The results obtained from the derived analytical formulas have been verified and confirmed by numerical computations and detailed system level simulations. The study of GSM/EDGE and mobile WiMax in 1times3 reuse as well as WiMax applied to fixed broadband wireless access (BWA) in 1times1 reuse shows a considerable difference of 40% to 60% in terms of spectrum efficiency between both traffic models. The comparison of mobile WiMax with GSM/EDGE reveals a moderate performance advantage for the new broadband OFDM system in the order of 20%-40% higher spectrum efficiency. BWA WiMax, however, provides a three-fold capacity gain compared to mobile WiMax
{"title":"Spectrum efficiency evaluation for different wireless technologies based on traffic modeling","authors":"C. Ball, K. Ivanov","doi":"10.1109/PIMRC.2005.1651801","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651801","url":null,"abstract":"Channel capacity and spectrum efficiency are widely used to compare the performance of different wireless technologies in cellular packet data networks. Recent studies revealed strong impact of traffic modeling on these key performance indicators. In this paper two generic traffic models are used to evaluate the spectrum efficiency for widespread GSM/EDGE and the upcoming new broadband OFDM IEEE 802.16 WiMax system. The first traffic model assumes an equal mean packet data call duration (EMPC-D) whereas the second one assumes an equal mean packet call data volume (EMPC-V) per subscriber. The evaluation procedure is based on a newly proposed combined analytical/geometric approach for rapid performance estimation in cellular packet data networks. The results obtained from the derived analytical formulas have been verified and confirmed by numerical computations and detailed system level simulations. The study of GSM/EDGE and mobile WiMax in 1times3 reuse as well as WiMax applied to fixed broadband wireless access (BWA) in 1times1 reuse shows a considerable difference of 40% to 60% in terms of spectrum efficiency between both traffic models. The comparison of mobile WiMax with GSM/EDGE reveals a moderate performance advantage for the new broadband OFDM system in the order of 20%-40% higher spectrum efficiency. BWA WiMax, however, provides a three-fold capacity gain compared to mobile WiMax","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129249340","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651577
Rui Zhao, B. Walke, M. Einhaus, G. Orfanos
High speed WPANs are intended to provide multi-media and multi-megabyte transmission services over relatively short distances for a wide range of devices. The long term goal of future high speed WPANs is to support transmission with a data rate of up to 2 Gbps. The W-CHAMB protocol is a link layer protocol for next generation WLANs. It is able to perform multi-hop delivery of high quality multi-media services in a fully distributed manner. In this article, we adapt the W-CHAMB protocol for Gigabit WPANs. The analytical results on the traffic performance and system capacity indicate that the adapted protocol is able to support high amounts of high quality multi-media transmission services in multi-hop Gigabit WPANs
{"title":"A primary adaptation of the W-CHAMB protocol for Gigabit WPANs","authors":"Rui Zhao, B. Walke, M. Einhaus, G. Orfanos","doi":"10.1109/PIMRC.2005.1651577","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651577","url":null,"abstract":"High speed WPANs are intended to provide multi-media and multi-megabyte transmission services over relatively short distances for a wide range of devices. The long term goal of future high speed WPANs is to support transmission with a data rate of up to 2 Gbps. The W-CHAMB protocol is a link layer protocol for next generation WLANs. It is able to perform multi-hop delivery of high quality multi-media services in a fully distributed manner. In this article, we adapt the W-CHAMB protocol for Gigabit WPANs. The analytical results on the traffic performance and system capacity indicate that the adapted protocol is able to support high amounts of high quality multi-media transmission services in multi-hop Gigabit WPANs","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125397191","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651934
M. Esseghir, N. Bouabdallah, G. Pujolle
One of the main concerns in wireless sensor networks is improving the network lifetime. The basic idea underlying current studies is the partial utilization of the sensor network resources. Nevertheless, most of the existing works focus on the connection upholding issue, while neglecting the coverage problem. Therefore, we investigate, in this paper, the relationship between the network lifetime and the coverage problem. We show that controlling the density function, relying on efficient sensor nodes placement, can improve significantly network lifetime. In this regard, we propose an efficient placement algorithm addressing the case where the monitored area density is equal to two. Afterwards, we extend the algorithm dealing with the case where the terrain density is higher than two. Finally, we gauge the efficiency of our proposal through analytical models and simulations
{"title":"A novel approach for improving wireless sensor network lifetime","authors":"M. Esseghir, N. Bouabdallah, G. Pujolle","doi":"10.1109/PIMRC.2005.1651934","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651934","url":null,"abstract":"One of the main concerns in wireless sensor networks is improving the network lifetime. The basic idea underlying current studies is the partial utilization of the sensor network resources. Nevertheless, most of the existing works focus on the connection upholding issue, while neglecting the coverage problem. Therefore, we investigate, in this paper, the relationship between the network lifetime and the coverage problem. We show that controlling the density function, relying on efficient sensor nodes placement, can improve significantly network lifetime. In this regard, we propose an efficient placement algorithm addressing the case where the monitored area density is equal to two. Afterwards, we extend the algorithm dealing with the case where the terrain density is higher than two. Finally, we gauge the efficiency of our proposal through analytical models and simulations","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125554506","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651618
M. Vaezi, A. Mirzaee, S. M. Safavi
In this paper, we consider the problem of peak to mean envelope power ratio (PMEPR) in orthogonal frequency division multiplexing (OFDM) systems. First, we propose a power-efficient 8-QAM signal constellation and extend it to higher order QAM signal constellations as well; and then we deploy these constellations to reduce the PMEPR in OFDM systems using the constellation expanding idea. All these constellations have less average power compared to the existing constellations like quadrature constellation and therefore are appropriate for PMEPR reduction in OFDM and other discrete multi-tone (DMT) techniques
{"title":"Power-efficient M-QAM signal constellations to reduce the PMEPR in OFDM systems","authors":"M. Vaezi, A. Mirzaee, S. M. Safavi","doi":"10.1109/PIMRC.2005.1651618","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651618","url":null,"abstract":"In this paper, we consider the problem of peak to mean envelope power ratio (PMEPR) in orthogonal frequency division multiplexing (OFDM) systems. First, we propose a power-efficient 8-QAM signal constellation and extend it to higher order QAM signal constellations as well; and then we deploy these constellations to reduce the PMEPR in OFDM systems using the constellation expanding idea. All these constellations have less average power compared to the existing constellations like quadrature constellation and therefore are appropriate for PMEPR reduction in OFDM and other discrete multi-tone (DMT) techniques","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126768610","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651493
P. Kyritsi, G. Papanicolaou
Time reversal (TR) is a technique that can achieve remarkable temporal focusing (delay spread reduction) and spatial focusing (low spatial interference) in the context of wideband multiple/single input-single output systems. In this paper, we investigate a simplified form of time-reversal, referred to as one-bit time reversal. The efficiency of this technique has already been demonstrated for ultrasound applications. We apply it to radio waves and demonstrate that it can preserve the spatial focusing properties of TR, while requiring much simpler transmitters. However, it does not have as good temporal focusing properties as pure TR
{"title":"One-bit Time Reversal for WLAN Applications","authors":"P. Kyritsi, G. Papanicolaou","doi":"10.1109/PIMRC.2005.1651493","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651493","url":null,"abstract":"Time reversal (TR) is a technique that can achieve remarkable temporal focusing (delay spread reduction) and spatial focusing (low spatial interference) in the context of wideband multiple/single input-single output systems. In this paper, we investigate a simplified form of time-reversal, referred to as one-bit time reversal. The efficiency of this technique has already been demonstrated for ultrasound applications. We apply it to radio waves and demonstrate that it can preserve the spatial focusing properties of TR, while requiring much simpler transmitters. However, it does not have as good temporal focusing properties as pure TR","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123201085","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651702
E. Fernandez, A. Minaburo, L. Toutain
The header compression mechanisms have been defined to work on a peer-to-peer noisy links, nevertheless the interest to integrate these schemes in multicast diffusion is increasing because this option will offer bandwidth savings. In this paper, ROHC unidirectional mode is used as a current possibility to make header compression to multicast packets. In a multicast distribution service users join the group at any time. Thus, the use of ROHC header compression will create a waiting time to start receiving the application information because all the header information is sent in a periodical time. A context recovery process (CRP) is proposed to improve ROHC multicast performance. This CRP reduces the waiting time to receive the context and may decrease the probability of context damage in a noisy link. The waiting time to receive the context is a new indicator to be considered in addition to ROHC performance indicators, when studying ROHC multicast performance. Our solution is evaluated by simulation means
{"title":"ROHC for multicast distribution services","authors":"E. Fernandez, A. Minaburo, L. Toutain","doi":"10.1109/PIMRC.2005.1651702","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651702","url":null,"abstract":"The header compression mechanisms have been defined to work on a peer-to-peer noisy links, nevertheless the interest to integrate these schemes in multicast diffusion is increasing because this option will offer bandwidth savings. In this paper, ROHC unidirectional mode is used as a current possibility to make header compression to multicast packets. In a multicast distribution service users join the group at any time. Thus, the use of ROHC header compression will create a waiting time to start receiving the application information because all the header information is sent in a periodical time. A context recovery process (CRP) is proposed to improve ROHC multicast performance. This CRP reduces the waiting time to receive the context and may decrease the probability of context damage in a noisy link. The waiting time to receive the context is a new indicator to be considered in addition to ROHC performance indicators, when studying ROHC multicast performance. Our solution is evaluated by simulation means","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"34 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120967779","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 : 2005-09-11DOI: 10.1109/PIMRC.2005.1651456
Y. Iizuka, T. Nakamori, H. Ishii, S. Tanaka, S. Ogawa, K. Ohno
High-speed downlink packet access (HSDPA) is specified in the 3rd Generation Partnership Project (3GPP) to cope with the increasing demand for high-speed Internet-based multimedia services. This paper presents field experimental results of the user throughput performance in HSDPA to clarify the effects of the maximum number of multi-codes, transmit diversity, and advanced user equipment (UE) such as receive diversity and a chip equalizer. The field experimental results show that 15-multi-code UE, transmit diversity, and receive diversity achieve the peak throughput of 6.5, 8.5, and 10.2 Mbps, respectively, at the average moving speed of 30 km/h in an actual multi-path fading propagation channel, and the average received signal-to-interference power ratio (SIR) is 24 dB. Furthermore, the results show that transmit diversity, receive diversity, and the chip equalizer can improve the average throughput to 27.0%, 54.6%, and 12.8%, respectively, compared to the conventional single antenna Rake receiver when the average received SIR is 16.3 dB
{"title":"Field Experiment Results of User Throughput Performance in WCDMA HSDPA","authors":"Y. Iizuka, T. Nakamori, H. Ishii, S. Tanaka, S. Ogawa, K. Ohno","doi":"10.1109/PIMRC.2005.1651456","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651456","url":null,"abstract":"High-speed downlink packet access (HSDPA) is specified in the 3rd Generation Partnership Project (3GPP) to cope with the increasing demand for high-speed Internet-based multimedia services. This paper presents field experimental results of the user throughput performance in HSDPA to clarify the effects of the maximum number of multi-codes, transmit diversity, and advanced user equipment (UE) such as receive diversity and a chip equalizer. The field experimental results show that 15-multi-code UE, transmit diversity, and receive diversity achieve the peak throughput of 6.5, 8.5, and 10.2 Mbps, respectively, at the average moving speed of 30 km/h in an actual multi-path fading propagation channel, and the average received signal-to-interference power ratio (SIR) is 24 dB. Furthermore, the results show that transmit diversity, receive diversity, and the chip equalizer can improve the average throughput to 27.0%, 54.6%, and 12.8%, respectively, compared to the conventional single antenna Rake receiver when the average received SIR is 16.3 dB","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116060110","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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