发布求助
文献互助 智能选刊 最新文献

2006 Australian Communications Theory Workshop最新文献

筛选
英文 中文
Binary codes in the block-fading channel 块衰落信道中的二进制码
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625247
J. Boutros, A. G. Fàbregas, E. Strinati
{"title":"Binary codes in the block-fading channel","authors":"J. Boutros, A. G. Fàbregas, E. Strinati","doi":"10.1109/AUSCTW.2006.1625247","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625247","url":null,"abstract":"We study coding for the non-ergodic block-fading channel. In particular, we analyze the error probability of full-diversity binary codes, and we elaborate on how to approach the outage probability limit. In so doing, we introduce the concept outage boundary region, which is a graphical way to illustrate failures in the decoding process. We show that outage achieving codes have a frame error probability which is independent of the block length. Conversely, we show that codes that do not approach the outage probability have an error probability that grows logarithmically with the block length","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115454785","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: 5
An Adaptive Resource Allocation Algorithm for Multiuser OFDM 一种多用户OFDM自适应资源分配算法
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625271
Liang-Ying Chen, B. Krongold, J. Evans
{"title":"An Adaptive Resource Allocation Algorithm for Multiuser OFDM","authors":"Liang-Ying Chen, B. Krongold, J. Evans","doi":"10.1109/AUSCTW.2006.1625271","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625271","url":null,"abstract":"This paper describes a practical and efficient adaptive subcarrier, power and bit allocation algorithm for multiuser OFDM systems. Assuming perfect knowledge of CSI at the transmitter, we look at the problem of minimizing the total power consumption while maintaining individual rate requirements and QoS constraints. We divide the joint allocation into two stages: fast initial allocation and further iterative refinement. An average-SNR approximation is used to determine the subchannel assignment while substantially reducing the computational complexity. The proposed algorithm guarantees improvement through each iteration and converges quickly to a stable suboptimal solution. Numerical results and complexity analysis show that the proposed algorithm offers a beneficial cost-versus-performance tradeoff compared to existing approaches.","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121609971","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: 5
Concatenated Systems and Cross-Layer Design 串联系统和跨层设计
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625260
L. Rasmussen, E. Uhlemann, F. Brannstrom
{"title":"Concatenated Systems and Cross-Layer Design","authors":"L. Rasmussen, E. Uhlemann, F. Brannstrom","doi":"10.1109/AUSCTW.2006.1625260","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625260","url":null,"abstract":"With high data rate wireless communications networks, new applications relying on high quality audio, video or control become viable. Examples of such applications are remote tele-medicine, collision avoidance systems, and audio/video entertainment at CD/DVD quality. These applications all demand high data rates, but have different quality-of-service (QoS) requirements in terms of reliability and latency. Currently, mobile communications networks have only limited provisions for QoS implementation and control. The conventional functionality separation in network design may be inhibiting effective implementation of guaranteed QoS. In this paper, we propose and review a system design paradigm based on concatenated system models and iterative signal processing. The novelty of the paradigm is to propagate methodologies of physical layer design across disciplinary boundaries within wireless network design in a bottom-up cross-layer approach. The paper is tutorial in nature, promoting the new view through presenting a series of examples of successful application of concatenated systems design from the physical and link layers. The purpose of the paper is to inspire new research directions.","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128877060","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
Efficient BER Expressions for MIMO-BICM in Spatially-Correlated Rayleigh Channels 空间相关瑞利信道中MIMO-BICM的高效误码率表达式
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625246
Matthew R. McKay, I. Collings
{"title":"Efficient BER Expressions for MIMO-BICM in Spatially-Correlated Rayleigh Channels","authors":"Matthew R. McKay, I. Collings","doi":"10.1109/AUSCTW.2006.1625246","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625246","url":null,"abstract":"We derive tight expressions for the coded bit error rate of MIMO bit-interleaved coded modulation (BICM) with zero-forcing receivers in spatially-correlated Rayleigh channels. The analysis is simpler and more direct than the standard BICM error event expurgation technique, and yields efficient, accurate expressions for the error probability. Based on the analytical results, we obtain the diversity order and show that it is unaffected by the presence of spatial correlation. We then show that spatial correlation induces an SNR loss with respect to i.i.d. channels, which is quantified, and found to depend explicitly on the eigenvalues of the spatial correlation matrices and the antenna configuration, but not on the coding and modulation parameters","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122111114","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
Optimisation of 16APSK constellation with a new iterative decoder on the nonlinear channel 基于非线性信道的16APSK星座迭代解码器优化
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625258
N. H. Ngo, S. S. Pietrobon, S. Barbulescu, C. Burnet
{"title":"Optimisation of 16APSK constellation with a new iterative decoder on the nonlinear channel","authors":"N. H. Ngo, S. S. Pietrobon, S. Barbulescu, C. Burnet","doi":"10.1109/AUSCTW.2006.1625258","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625258","url":null,"abstract":"Amplitude phase shift keying (APSK) modulation presents an attractive scheme to overcome nonlinearity effects on nonlinear channels compared to conventional square quadrature amplitude modulation (QAM). In this paper, we investigate the performance of a bit interleaved coded modulation with iterative decoding (BICM-ID) system in which APSK modulation is used to achieve a spectral efficiency of 3 bit/s/Hz. A new iterative receiver is proposed where an extra soft-demapper is used between the two soft input soft output (SISOs) decoders. Extrinsic information exchange for the data and parity bits is optimised according to an appropriate iteration scheduling. Simulation results show a gain of 0.15 dB at a bit error rate (BER) of 10-4 with this new iterative decoding scheme and the optimised constellation over a nonlinear satellite channel","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117041754","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: 2
Capacity approaching codes for the non-coherent FSK channel 非相干FSK信道的容量逼近码
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625273
A. G. Fàbregas, A. Grant
{"title":"Capacity approaching codes for the non-coherent FSK channel","authors":"A. G. Fàbregas, A. Grant","doi":"10.1109/AUSCTW.2006.1625273","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625273","url":null,"abstract":"This paper describes a curve-fitting approach for the design of capacity approaching coded modulation for orthogonal signal sets with non-coherent detection. In particular, bit-interleaved coded modulation with iterative decoding is considered. Decoder metrics are developed that do not require the knowledge of the signal-to-noise ratio, yet still offer very good performance","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131607167","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
On the Capacity of MIMO Systems with Magnitude Knowledge and Phase Uncertainty 具有幅度知识和相位不确定性的MIMO系统容量研究
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625253
M. Payaró, Jinhong Yuan, M. Lagunas
{"title":"On the Capacity of MIMO Systems with Magnitude Knowledge and Phase Uncertainty","authors":"M. Payaró, Jinhong Yuan, M. Lagunas","doi":"10.1109/AUSCTW.2006.1625253","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625253","url":null,"abstract":"In this work, we study different capacity formulations in multi-input multi-output channels where the transmitter is only informed with the magnitude of the complex channel matrix coefficients. Perfect channel knowledge is assumed at the receiver side. First, we give the expressions for the ergodic, compound, and outage capacities for our particular model of channel state information. Next, focusing on the compound formulation, we find that the optimal transmitter strategy consists in independent signaling through the transmit dimensions. Finally, we present some results on the optimal power allocation for the maximization of the outage mutual information for a simple MIMO system where the transmitter is equipped with only two antennas.","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114653290","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
A closed-form approximation for the error probability of coded BPSK fading channels 编码BPSK衰落信道误差概率的封闭逼近
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625248
A. Martinez, A. G. Fàbregas, G. Caire
{"title":"A closed-form approximation for the error probability of coded BPSK fading channels","authors":"A. Martinez, A. G. Fàbregas, G. Caire","doi":"10.1109/AUSCTW.2006.1625248","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625248","url":null,"abstract":"This paper presents a simple closed-form expression to evaluate the error probability of binary fully-interleaved fading channels. The proposed expression does not require a numerical Laplace transform inversion, numerical integration or similar techniques, and captures the role of the relevant system parameters in the overall error performance. The expression has the same asymptotic behavior as the Bhattacharyya (Chernoff)-union bound but closes the gap with the simulation results. Its precision is numerically validated for coded and uncoded transmission over generic Nakagami fading channels","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122539860","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
Robustness of Random Network Coding to Interfering Sources 随机网络编码对干扰源的鲁棒性
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625267
A. T. Campo, A. Grant
{"title":"Robustness of Random Network Coding to Interfering Sources","authors":"A. T. Campo, A. Grant","doi":"10.1109/AUSCTW.2006.1625267","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625267","url":null,"abstract":"Random network codes are considered for multicast scenarios where not all of the sources are required by the sinks. These unwanted sources could model interfering or even adversarial sources. The objective of the paper is to determine the effect of the interfering sources on the probability of successful decoding. A lower bound on the success probability is determined. The bound is the product of the probability that the random network code is feasible without interference, multiplied by a robustness factor. The robustness factor uniquely depends on the in-degree of the sink and the size of the finite field. Analysis of the robustness factor shows that the effect of interference can be completely mitigated through a small increase in the field size.","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125285276","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
Computational efficiency of list sphere detection 表球检测的计算效率
2006 Australian Communications Theory Workshop Pub Date : 2006-05-08 DOI: 10.1109/AUSCTW.2006.1625257
M. Hedley, H. Suzuki, G. Daniels
{"title":"Computational efficiency of list sphere detection","authors":"M. Hedley, H. Suzuki, G. Daniels","doi":"10.1109/AUSCTW.2006.1625257","DOIUrl":"https://doi.org/10.1109/AUSCTW.2006.1625257","url":null,"abstract":"In this paper the performance of a promising MIMO detection algorithm, list sphere detection, is evaluated for a range of list lengths and for four variations to the basic algorithm. The evaluation uses a MIMO-OFDM-BICM system simulation to show bit error performance versus the computational effort, and the results are compared to maximum likelihood detection. The results provide guidance on the selection of an appropriate list length and algorithm. In applications where a short list length must be used due to memory or computation constraints the results show the loss in performance that can be expected","PeriodicalId":206040,"journal":{"name":"2006 Australian Communications Theory Workshop","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122285721","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
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：481959085
Book学术官方微信