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2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)最新文献

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An iterative adaptive receiver design using the multi-layer RLS algorithm with applications to layered space time coded systems 一种基于多层RLS算法的迭代自适应接收机设计，并应用于分层空时编码系统
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1373916
J. Chueh, Hayoung Yang, B. Vucetic
{"title":"An iterative adaptive receiver design using the multi-layer RLS algorithm with applications to layered space time coded systems","authors":"J. Chueh, Hayoung Yang, B. Vucetic","doi":"10.1109/PIMRC.2004.1373916","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1373916","url":null,"abstract":"Layered space-time (LST) architectures can support efficient signal processing in multiple-input multiple-output (MIMO) systems. Current applications to LST systems are based on pilot-aid transmissions, with the problem of reducing spectral efficiency. In this paper, the new adaptive algorithm called multilayer recursive least square (RLS) is applied to an iterative receiver structure in LST systems. A multi-layer RLS algorithm is an efficient method to provide accurate interference cancellation and fast convergence. This multi-layer RLS adaptive iterative receiver considers joint detection/decoding and channel estimation to avoid the periodic insertion of pilot-tones and hence improves spectral efficiency. The proposed iterative adaptive receiver is compared with a lower bound non-adaptive MMSE receiver where the channel state information (CSI) is assumed to be perfectly known a priori at the receiver. The proposed receiver structure is suitable for MIMO systems in slow time variant channels. Simulation results are supplied to demonstrate the excellent performance of the proposed multi-layer RLS adaptive receiver over a conventional linear RLS receiver.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"22 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113942548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Novel MIMO-SDMA configuration adopting directivity and polarization control 采用指向性和极化控制的新型MIMO-SDMA结构
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368819
K. Nishimori, Y. Takatori, R. Kudo, N. Tachikawa, K. Tsunekawa
{"title":"Novel MIMO-SDMA configuration adopting directivity and polarization control","authors":"K. Nishimori, Y. Takatori, R. Kudo, N. Tachikawa, K. Tsunekawa","doi":"10.1109/PIMRC.2004.1368819","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368819","url":null,"abstract":"This work proposes a novel MIMO-SDMA configuration using dual polarization antennas at the base and terminal stations. In this scheme, based on the transmission speed required by the terminal stations and the spatial correlation between the terminal stations, the base station determines the combination and number of antennas on which the terminal stations transmit Thus, the proposed configuration obtains high spectrum efficiency while improving the transmission speed required for broadband wireless communications. Moreover, the proposed configuration improves the output SINR compared to the conventional SDMA when multi-rate transmission is employed based on computer simulation.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132056097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Accuracy improvement algorithms for prediction of user location using receive signal strength indication in infrastructure WLANs 基础设施无线局域网中使用接收信号强度指示预测用户位置的精度改进算法
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368301
T. P. Deasy, W. Scanlon
{"title":"Accuracy improvement algorithms for prediction of user location using receive signal strength indication in infrastructure WLANs","authors":"T. P. Deasy, W. Scanlon","doi":"10.1109/PIMRC.2004.1368301","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368301","url":null,"abstract":"An analysis of the performance of several algorithms for improving the estimation of user location in a standard infrastructure wireless local area network (WLAN) is presented. The basic method involves comparing real-time received signal strength indication values with those stored in a precreated radio map to estimate the user's location. However, this basic tracking technique can have an rms error of almost 5 m, which is particularly high for indoor tracking. The performance of three different refinement algorithms was simulated across a range of testbed environments. One of the algorithms, constrained movement, offered almost a 40 % improvement in rms error (2.8 m for a measurement uncertainty of 2.5 dB) and performed consistently well across all of the environments considered.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132116426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Precoding of orthogonal STBC with channel covariance feedback for minimum error probability 基于信道协方差反馈的正交STBC预编码
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1370922
Yi Zhao, R. Adve, Teng Joon Lim
{"title":"Precoding of orthogonal STBC with channel covariance feedback for minimum error probability","authors":"Yi Zhao, R. Adve, Teng Joon Lim","doi":"10.1109/PIMRC.2004.1370922","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1370922","url":null,"abstract":"This paper develops the linear transformation (or precoding) of orthogonal space-time block codes (STBC) for minimizing probability of decoding error, when the channel covariance matrix is available at the transmitter. We build on recent work that stated the optimization problem without solving for the transformation. Specifically, we provide a closed-form solution for the multi-input single-output (MISO) systems, and a numerical solution for the multi-input multi-output (MIMO) systems. Our results confirm that eigen-beamforming is optimal at low SNR or highly correlated channels, and full diversity is optimal at high SNR or weakly correlated channels.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130166335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Large MIMO system channel capacity using replica analysis and Grassmann variables: a closed form solution 使用复制分析和格拉斯曼变量的大型MIMO系统信道容量:封闭形式的解决方案
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368352
E. Khan, C. Heneghan
{"title":"Large MIMO system channel capacity using replica analysis and Grassmann variables: a closed form solution","authors":"E. Khan, C. Heneghan","doi":"10.1109/PIMRC.2004.1368352","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368352","url":null,"abstract":"Multiinput multioutput (MIMO) system are today regarded as one of the most promising research areas in wireless communications. This is due to the fact that MIMO channel can offer a significant capacity gain over traditional single-input single-output (SISO) channel. When transmitting over MIMO channels, there are additional degrees of freedom with respect to SISO channels. This paper presents the capacity of an uncorrelated MIMO channel in high SNR regime. The expression for the large system MIMO capacity is calculated in closed form using replica analysis and Grassmann variables. It is assumed that the receiver has perfect knowledge of the channel but no such information is available at the transmitter.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130184092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling and analysis of a cellular MC-CDMA downlink system 蜂窝式MC-CDMA下行系统的建模与分析
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1370856
S. Plass, S. Sand, G. Auer
{"title":"Modeling and analysis of a cellular MC-CDMA downlink system","authors":"S. Plass, S. Sand, G. Auer","doi":"10.1109/PIMRC.2004.1370856","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1370856","url":null,"abstract":"The concept of a multi-cell environment for an MC-CDMA downlink scenario is presented; it is based on a propagation model taking into account path loss and shadowing. The interference of adjacent cells is studied and the Gaussian approximation (GA) is investigated for simplifying the interference simulation. The major influence of the interfering cells is restricted to the peripheral area of the desired cell. In particular, it is shown, by simulations, that the GA for the impinged interference signals is an appropriate assumption. This drastically decreases the simulation complexity for a high number of interfering cells, e.g., one or two tiers around the desired cell.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134424587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 28
On Bluetooth performance with diversity reception in fading channels 衰落信道中分集接收的蓝牙性能研究
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1373828
A. Conti, D. Dardari, B. Masini, G. Pasolini
{"title":"On Bluetooth performance with diversity reception in fading channels","authors":"A. Conti, D. Dardari, B. Masini, G. Pasolini","doi":"10.1109/PIMRC.2004.1373828","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1373828","url":null,"abstract":"This paper investigates the impact of diversity reception techniques on the performance of Bluetooth (BT) packet transmission in fading channels. We firstly derive a tight parametric exponential approximation for the bit error probability in additive white Gaussian noise depending on GFSK modulation parameters according to the BT standard. Then, from this expression we derive the mean block error probability (BLEP) for DH packets transmission in Rayleigh fading channel by adopting different diversity reception techniques, such as selection diversity and maximal ratio combining (MRC). In particular, the impact of the diversity order and combining techniques on the BLEP is shown. For the MRC technique, we also obtain a tight bound on the BLEP. Furthermore, we extend the results for MRC to Nakagami-m fading and we obtain the parameters of exponential approximation for a general GFSK modulation, although out of BT standard, showing their impact on both the performance and spectrum.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131483450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Two-way registration: a fast handoff scheme for IPv4 macro-mobility management 双向注册:用于IPv4宏迁移管理的快速切换方案
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1373898
Ji Zhang, David A. J. Pearce, T. Tozer
{"title":"Two-way registration: a fast handoff scheme for IPv4 macro-mobility management","authors":"Ji Zhang, David A. J. Pearce, T. Tozer","doi":"10.1109/PIMRC.2004.1373898","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1373898","url":null,"abstract":"Hierarchical mobile IPv4 provides micro-mobility enhancements for the original mobile IPv4 standard. However, as the size of wireless cells decreases, the macro-mobility (or inter-domain handoff) case becomes more common. We propose a fast inter-domain handoff algorithm to provide efficient macro-mobility management and present the simulation results. Our scheme reduces the home registration latency and hence minimizes the disruption caused by macro-mobility handoffs for both downlink and uplink packet streams.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"473 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131641740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
High data rate enhancement for beyond 3G services using complete complementary codes 使用完整的互补代码实现3G以外服务的高数据速率增强
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368399
C. Khirallah, P. Coulton, S. Mohsin, N. Zein
{"title":"High data rate enhancement for beyond 3G services using complete complementary codes","authors":"C. Khirallah, P. Coulton, S. Mohsin, N. Zein","doi":"10.1109/PIMRC.2004.1368399","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368399","url":null,"abstract":"We present a multiple-input-multiple-output (MIMO) code-division-multiple-access (CDMA) communication system based on complete complementary (CC) codes (CC-CDMA) in a time-dispersive (i.e. frequency-selective fading) channel. This system utilizes a novel combination, which consists of orthogonal CC codes for data spreading and a suitably designed multiuser-detector (MUD) algorithm, in order to enhance the current 3rd generation (3G) mobile systems. The simulation results for the CC-CDMA system, obtained in a frequency-selective fading channel, reveal significant improvement in bit-error-rate (BER) performance, and consequently the achieved high data rates (HDR) compared with a conventional Walsh codes based MIMO CDMA (Walsh-CDMA) system.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131655898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
End-to-end QoS of multiclass traffic in WCDMA and Diffserv network WCDMA和Diffserv网络中多类业务的端到端QoS
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368356
Lei Xiao, D. Wong, Y. Chew
{"title":"End-to-end QoS of multiclass traffic in WCDMA and Diffserv network","authors":"Lei Xiao, D. Wong, Y. Chew","doi":"10.1109/PIMRC.2004.1368356","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368356","url":null,"abstract":"With the growth of wireless industry, demand for high-speed wireless data services is expected to overtake voice services and a hybrid wireless wideband CDMA/ wireline Internet protocol (IP)-based network will be the main platform for providing multimedia services to both mobile and fixed users. We first present a multiclass admission control scheme with UMTS QoS classes in the DiffServ IP network. We further extend this scheme for end-to-end admission control from the 3G WCDMA to the DiffServ IP networks and investigate how to interconnect a future wireless network with the Internet for seamless end-to-end information transmission. Simulation results show that the scheme provides flexible and efficient multiclass QoS guarantees over the end-to-end connections.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130768199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
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