2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)最新文献_第3页

Semiblind channel estimation for MIMO-OFDM MIMO-OFDM的半盲信道估计

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.2004.1368319

H. Fu, P. Fung, Sumei Sun

引用次数: 5

A subspace-based channel model for frequency selective time variant MIMO channels 基于子空间的频率选择时变MIMO信道模型

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.2004.1368270

G. D. Galdo, M. Haardt, M. Milojević

引用次数: 10

Maximizing througput with adaptive M-QAM based on imperfect channel predictions 利用基于不完美信道预测的自适应M-QAM实现吞吐量最大化

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.2004.1368407

M. Sternad, S. Falahati

引用次数: 29

The role of virtual noise in unconstrained frequency domain equalization 虚拟噪声在无约束频域均衡中的作用

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.2004.1370915

M. Magarini, A. Spalvieri

{"title":"The role of virtual noise in unconstrained frequency domain equalization","authors":"M. Magarini, A. Spalvieri","doi":"10.1109/PIMRC.2004.1370915","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1370915","url":null,"abstract":"Decision feedback equalization is a popular method for signal detection that allows a good trade off between complexity and performance. The complexity of the decision feedback equalizer (DFE) is mainly concentrated in the feedforward filter, which is often realized in FIR form. When the number of taps of the FIR filter needed to obtain nearly optimal performance becomes large, one may take advantage of the efficiency of the FFT/IFFT algorithm realizing the feedforward filter in the discrete frequency domain. In this paper we consider the minimum mean square error (MMSE) DFE with feedforward filter in the discrete frequency domain, assuming perfect knowledge of a static channel. We move from the observation that the optimal MMSE-DFE feedforward filter is IIR, and point out that the classical scheme of unconstrained frequency domain filtering with overlap/save digital signal processing may induce substantial increase in the error rate when the approximation of the linear convolution between the received signal and the mentioned IIR, to a circular convolution is poor. Our main finding is that the error rate can be significantly improved by deliberately augmenting the power of the noise in the computation of the transfer function of the frequency domain feedforward filter.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"7 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":"114255205","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

System performance of multibeam antennas HS-DSCH WCDMA system 多波束天线HS-DSCH WCDMA系统性能研究

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.2004.1368398

A. Osseiran, Mårten Ericson

{"title":"System performance of multibeam antennas HS-DSCH WCDMA system","authors":"A. Osseiran, Mårten Ericson","doi":"10.1109/PIMRC.2004.1368398","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368398","url":null,"abstract":"This paper summarizes the results for system performance of the WCDMA high speed downlink shared channel (HS-DSCH), where base stations are equipped with multibeam antennas employing four fixed beams (FB) per sector. The implemented version assumes that each beam has its own HS-DSCH channel. In the FB cases the power is equally divided between the beams belonging to the same sector. Each beam employs a scrambling code, thus in total four scrambling codes per cell, compared to one scrambling code for the sector case. A secondary common pilot channel (S-CPICH) on which the UE measures the CIR is assumed to be available for the FB system. In order to investigate thoroughly the interaction between FB and HS-DSCH (analyze the effect of antenna technique), on one hand a WWW traffic model and max-CIR scheduler, and on the other hand, a continuous data stream with infinite packet size in conjunction with proportional fair scheduler, were examined. Two channel models are also investigated: the 3GPP typical urban and the pedestrian A. The results show that for four fixed beam antennas in the pedestrian A channel model and the highly dispersive channels, significant capacity gains are obtained, threefold compared to a single sector antenna.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"29 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":"114284437","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

RTCP feedback based transmission rate control for 3G wireless multimedia streaming 基于RTCP反馈的3G无线多媒体流传输速率控制

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.2004.1368313

N. Baldo, U. Horn, M. Kampmann, F. Hartung

引用次数: 36

Finding sensing coverage and breach paths in surveillance wireless sensor networks 监控无线传感器网络中传感覆盖范围和缺口路径的确定

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.2004.1373846

E. Onur, Cem Ersoy, H. Deliç

引用次数: 19

Outage probability with maximal ratio combining in the presence of multiple interferers under Rayleigh and Nakagami fading channels Rayleigh和Nakagami衰落信道下存在多干扰时的最大比组合中断概率

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.2004.1373837

J. P. Peña-Martín, J. M. Romero-Jerez

引用次数: 3

Application QoS management for the reverse link of a 3G network 3G网络反向链路的应用QoS管理

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.2004.1368796

Patrick Hosein

引用次数: 2

Experiments on fast sector selection with entire-bandwidth assignment in forward link for OFCDM broadband packet wireless access OFCDM宽带分组无线接入前向链路全带宽分配快速扇区选择实验

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.2004.1368288

A. Morimoto, S. Abeta, M. Sawahashi

{"title":"Experiments on fast sector selection with entire-bandwidth assignment in forward link for OFCDM broadband packet wireless access","authors":"A. Morimoto, S. Abeta, M. Sawahashi","doi":"10.1109/PIMRC.2004.1368288","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368288","url":null,"abstract":"This work presents experimental results on fast sector selection (FSS) with entire-bandwidth assignment in the forward link for orthogonal frequency and code division multiplexing (OFCDM) broadband packet access. We first elucidate that the additional improvement derived from FSS with independent frequency-block assignment by taking advantage of frequency-selective fading compared to FSS with entire-bandwidth assignment is small from the viewpoint of the received signal level when the number of frequency-block is not large. Then, we investigate the effect of FSS with entire-bandwidth assignment in laboratory and field experiments considering the application of key techniques for high-speed packet access such as hybrid ARQ with packet combining, soft-decision turbo decoding, and pilot channel-assisted channel estimation. Field experiments, which are conducted in an urban area near Tokyo, show that by applying FSS, the required signal power at the average residual packet error rate (PER) of 10/sup -3/ can be reduced by approximately 2.0 and 1.0 dB compared to the case without FSS when the maximum number of retransmissions in Incremental redundancy is 0 and 1, respectively.","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":"128291689","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