发布求助
文献互助 智能选刊 最新文献

IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.最新文献

筛选
英文 中文
Simultaneous multichannel tracking and model adjustment using two Kalman filters for space-time transmit diversity 同时多通道跟踪和模型调整使用两个卡尔曼滤波器的时空发射分集
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1505870
H-C. Wu, I. Lu
{"title":"Simultaneous multichannel tracking and model adjustment using two Kalman filters for space-time transmit diversity","authors":"H-C. Wu, I. Lu","doi":"10.1109/SPAWC.2005.1505870","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1505870","url":null,"abstract":"A novel approach using two Kalman filters is proposed to track channel responses and adjust the channel model simultaneously for space-time code transmissions over time-selective fading channels.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126372944","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
Improved code design criteria for space-time codes over quasi-static flat fading channels 改进的准静态平坦衰落信道空时码设计准则
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1505861
Chen Liao, Vasant K. Prabhu
{"title":"Improved code design criteria for space-time codes over quasi-static flat fading channels","authors":"Chen Liao, Vasant K. Prabhu","doi":"10.1109/SPAWC.2005.1505861","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1505861","url":null,"abstract":"Design issues concerning the code design criteria of space-time trellis code are discussed and the improved design criteria for space-time trellis codes are proposed. The improved design criteria are designed to minimize the frame error probability. The new codes based on proposed criteria had been successfully designed and simulated. The simulation results show that the performance of new codes based on proposed criteria can be improved compared to some existing codes.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124500384","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: 17
A cross-correlation model for non-isotropic scattering with non-omnidirectional antennas in MIMO propagation channels MIMO信道中非全向天线非各向同性散射的互相关模型
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1505910
H. S. Rad, S. Gazor
{"title":"A cross-correlation model for non-isotropic scattering with non-omnidirectional antennas in MIMO propagation channels","authors":"H. S. Rad, S. Gazor","doi":"10.1109/SPAWC.2005.1505910","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1505910","url":null,"abstract":"We present a cross-correlation model for multiple-input multiple-output (MIMO) Rayleigh fading channels in a two-dimensional (2D) multipath random media when energy is non-uniformly received/transmitted to/from the receiver/transmitter along propagation directions. We investigate the impact of non-omnidirectional propagation pattern of antennas along with the impact of non-uniform distribution of the scatterers in the propagation environment which introduces non-isotropic wave propagation, at both transmitter and receiver ends. The non-isotropic propagation is described by non-uniform probability density functions (pdf) for the direction-of-departure (DOD) and the direction-of-arrival (DOA) of the outgoing/incoming propagating waves from/to stations. The propagation patterns of antenna elements (and the effect of mutual coupling between them) are also described by the Fourier series expansion of antenna propagation patterns. The expression of the cross-correlation function (CCF) turns out to be a linear expansion of a number of Bessel functions of the first kind. The coefficients of this expansion are given by linear convolution of the Fourier series coefficients (FSC) of the corresponding antenna patterns and the FSCs of the corresponding pdf of the non-isotropic propagation directions. The Fourier analysis on the CCF shows impacts of non-isotropic environment and non-omnidirectional antennas on the spectrum of the received channel process while the maximum Doppler frequency shift remains invariant with variations of beam-patterns and the pdf of propagating waves.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127508544","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
OFDMA under multi-tone interference 多音干扰下的OFDMA
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1506038
C. Esli, H. Deliç
{"title":"OFDMA under multi-tone interference","authors":"C. Esli, H. Deliç","doi":"10.1109/SPAWC.2005.1506038","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1506038","url":null,"abstract":"Orthogonal frequency-division multiple access (OFDMA) with and without space-frequency coding (SFC) is considered under multi-tone (MT) interference. Analytical expressions for the bit error probability (BEP) are derived for frequency-selective fading. It is shown that SFC increases the resistance of OFDMA against MT interference and reduces the BEP significantly.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"69 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128178994","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
Low-complexity diversity receiver for single/multi-band UWB 用于单/多波段超宽带的低复杂度分集接收机
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1506301
L. Yang
{"title":"Low-complexity diversity receiver for single/multi-band UWB","authors":"L. Yang","doi":"10.1109/SPAWC.2005.1506301","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1506301","url":null,"abstract":"As wireless networks evolve to provide an unprecedented variety of services, heterogeneity emerges among network nodes. To establish physical communication links between nodes with distinct complexity requirements, asymmetric transceivers need to be designed. In the ultra-wideband (UWB) regime, there are two major complexity issues: sampling rate and channel estimation. In this paper, we develop very low-complexity UWB receiver;, which are capable of collecting multipath diversity by sampling at a fraction of the Nyquist rate as well as circumventing channel estimation. By doing so, we establish asymmetric UWB links to account for and take advantage of the heterogeneity among network nodes. Our analysis and simulations confirm that our low-complexity diversity receiver is operational with both single-band and multi-band UWB transmitters.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"83 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122112090","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
Interpolation-based QR decomposition in MIMO-OFDM systems MIMO-OFDM系统中基于插值的QR分解
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1506279
Davide Cescato, Moritz Borgmnnn, Helmut Bolcskei, Jan Hansen, Andreas Burg
{"title":"Interpolation-based QR decomposition in MIMO-OFDM systems","authors":"Davide Cescato, Moritz Borgmnnn, Helmut Bolcskei, Jan Hansen, Andreas Burg","doi":"10.1109/SPAWC.2005.1506279","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1506279","url":null,"abstract":"The extension of multiple-input multiple-output (MIMO) sphere decoding from the narrowband case to wideband systems based on orthogonal frequency division multiplexing (OFDM) requires the computation of a QR decomposition for each of the data-carrying OFDM tones. Since the number of data-carrying tones ranges from 48 (as in the IEEE 802.11a/g standards) to 6817 (as in the DVB-T standard), the corresponding computational complexity will in general be significant. This paper presents two algorithms for interpolation-based QR decomposition in MIMO-OFDM systems. An in-depth computational complexity analysis shows that the proposed algorithms, for a sufficiently high number of data-carrying tones and small channel order exhibit significantly smaller complexity than brute-force per-tone QR decomposition.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115625316","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: 40
Semi-blind channel estimation for OFDM systems via an EM-MAP algorithm 基于EM-MAP算法的OFDM系统半盲信道估计
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1506211
J.M.M. Ocloo, F. Alberge, Pierre Duhamel
{"title":"Semi-blind channel estimation for OFDM systems via an EM-MAP algorithm","authors":"J.M.M. Ocloo, F. Alberge, Pierre Duhamel","doi":"10.1109/SPAWC.2005.1506211","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1506211","url":null,"abstract":"In the OFDM communication context, semi-blind algorithms allow to cope with Doppler effect due to the mobility of wireless systems. For slowly varying channels, the estimation process can be performed on a block of symbols assuming that the channel is constant over the block. This algorithm enhances the performance in terms of channel estimation with the additional advantage of a linear arithmetical complexity. In this paper, we propose an EM-MAP algorithm which takes into account a channel correlation model between the coefficients of the block structure. Simulations results presented in the context of 5 GHz WLANs show that this new algorithm performs better than the EM-block algorithm in the mobile environment.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124799381","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: 4
Joint channel tracking and symbol detection in MIMO systems via multiple model methods 基于多模型方法的MIMO系统联合信道跟踪与符号检测
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1505862
Y. Jia, C. Andrieu, R. Piechocki, Magnus Sandell
{"title":"Joint channel tracking and symbol detection in MIMO systems via multiple model methods","authors":"Y. Jia, C. Andrieu, R. Piechocki, Magnus Sandell","doi":"10.1109/SPAWC.2005.1505862","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1505862","url":null,"abstract":"We propose a new semi-blind joint channel tracking and symbol detection for spatial multiplexing MIMO system. The proposed algorithm is based on the generalized pseudo Bayesian algorithm (GPB) and probability data association (PDA). The purpose of the GPB algorithm is to control the size of the filtering tree and the Gaussian approximation idea behind PDA is applied to each time instant to reduce the model size. Simulation results are given to demonstrate the effectiveness of the new algorithm.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123279458","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
System design considerations for high data rate communications over multi-wire overhead powerlines 多线架空电力线上高数据速率通信的系统设计考虑
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1506268
P. Amirshahi, M. Kavehrad
{"title":"System design considerations for high data rate communications over multi-wire overhead powerlines","authors":"P. Amirshahi, M. Kavehrad","doi":"10.1109/SPAWC.2005.1506268","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1506268","url":null,"abstract":"Broadband powerline communications over multi-wire overheard lines using orthogonal frequency division multiplexing (OFDM) is considered in this paper. From earlier investigations, it is known that this channel suffers with multipath fading and frequency selectivity. Nevertheless, the calculated channel capacity limit promises very high data rates over this channel, subject to simple fixes. Enhancement techniques, such as coding can help an OFDM system to achieve this limit as close as possible. The smart use of coding and power allocation in OFDM will be useful to get the desired performance at higher data rates. These theoretic facts are confirmed by means of computer simulations.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125560516","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
Design of tapped-delay line smart antenna array using vector space projections 基于向量空间投影的抽头延迟线智能天线阵列设计
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005. Pub Date : 2005-06-05 DOI: 10.1109/SPAWC.2005.1505899
Junjie Gu, Yongyi Yang, H. Stark
{"title":"Design of tapped-delay line smart antenna array using vector space projections","authors":"Junjie Gu, Yongyi Yang, H. Stark","doi":"10.1109/SPAWC.2005.1505899","DOIUrl":"https://doi.org/10.1109/SPAWC.2005.1505899","url":null,"abstract":"A tapped-delay line (TDL) structured wideband smart antenna array is designed using vector-space projection (VSP) method. The structure consists of a one-dimensional antenna array with a TDL attached to each antenna. By controlling the weight coefficients at the TDL taps using VSP method, we achieve beamforming the array over wide frequency bands. Constraints and associated projections are furnished to meet the design specifications. We demonstrate the capability of VSP method adapted to solve this array design task.","PeriodicalId":273666,"journal":{"name":"IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123807273","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书