2013 13th Canadian Workshop on Information Theory最新文献_第3页

Low and high-delay source-channel coding with bandwidth expansion and correlated interference 具有带宽扩展和相关干扰的低延迟和高延迟源信道编码

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621593

A. Saleh, W. Chan, F. Alajaji

引用次数: 2

Improved systematic fountain codes in AWGN channel 改进了AWGN通道的系统喷泉码

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621610

Khaled F. Hayajneh, S. Yousefi

引用次数: 16

Binary faster than Nyquist optical transmission via non-uniform power allocation 通过非均匀功率分配，二进制比奈奎斯特光传输更快

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621616

Yong Jin Daniel Kim, J. Bajcsy

引用次数: 2

Turbo code using adaptive puncturing for transform domain Wyner-Ziv video coding 采用自适应穿刺的Turbo码变换域Wyner-Ziv视频编码

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621595

M. H. Taieb, J. Chouinard, Demin Wang

{"title":"Turbo code using adaptive puncturing for transform domain Wyner-Ziv video coding","authors":"M. H. Taieb, J. Chouinard, Demin Wang","doi":"10.1109/CWIT.2013.6621595","DOIUrl":"https://doi.org/10.1109/CWIT.2013.6621595","url":null,"abstract":"In most DVC architectures presented in the literature, the puncturing mechanism operates according to a periodic pattern that spreads uniformly the turbo generated parity bits and discards all the systematic bits. These latter are replaced by the receiver side information (SI) during the turbo decoding process. The side information is generated by a block based motion interpolation algorithm that can, furthermore, predict whether or not each block is well interpolated. Thus, instead of uniformly dispersing the parity bits over the whole turbo code trellis, they can be directed to the most corrupted regions. If the side information displays regions that appear to be even more highly corrupted, systematic bits can likewise be guided adaptively towards these regions. In this paper, an adaptive puncturing scheme is proposed. A classification of the corrupted parts of each DCT band of the interpolated frame is performed and then an adaptive puncturing mechanism is employed for a more efficient parity and systematic bits repartition. Simulation results show that the adaptive puncturing scheme can provide as much as 20 % of Wyner-Ziv bitrate reduction: this is reflected by a PSNR vs bit rate performance improvement of up to 1.8 dB.","PeriodicalId":398936,"journal":{"name":"2013 13th Canadian Workshop on Information Theory","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116954964","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

On optimal detection ordering for coded V-BLAST 编码V-BLAST的最优检测排序

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/cwit.2013.6621587

Alain U. Toboso, S. Loyka, F. Gagnon

引用次数: 11

An efficient Soliton-like network coding protocol for the resource-constrained Y-network 一种资源受限的类孤子网络编码协议

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621613

Andrew Liau, Il Kim, S. Yousefi

引用次数: 1

On the reserved sub-carrier approach to achieving N-continuity for side-lobe reduction in OFDM 在OFDM中实现n -连续性旁瓣消减的保留子载波方法

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621622

Jesse Haber-Kucharsky, E. Alian, P. Mitran

{"title":"On the reserved sub-carrier approach to achieving N-continuity for side-lobe reduction in OFDM","authors":"Jesse Haber-Kucharsky, E. Alian, P. Mitran","doi":"10.1109/CWIT.2013.6621622","DOIUrl":"https://doi.org/10.1109/CWIT.2013.6621622","url":null,"abstract":"Orthogonal frequency division multiplexing (OFDM) is a popular modulation scheme used in a variety of applications. One significant problem associated with OFDM is the possibility of large side-lobes in its spectrum. In this paper, we consider the so-called N-continuous method for reducing the side-lobes. We first consider one implementation approach, whereby certain sub-carriers are reserved for the purpose of adjusting the spectrum of an OFDM symbol. We find that significant side-lobe reduction is possible, although at the cost of injecting very large power in the reserved sub-carriers that results in unacceptable spectrum overshoot. In order to achieve reasonable power levels, at least 20% of all sub-carriers must be reserved for weighting. As a solution to the problem of spectrum overshoot, we propose an alternative approach whereby the power of the reserved sub-carriers is constrained. Numerical results show that reasonable power levels are achieved at the cost of significant performance loss in the N-continuous OFDM technique for side-lobe reduction. We thus find that the performance cost of eliminating the spectrum overshoot reduces the side-lobes reduction to less than 5 dB in cases of interest.","PeriodicalId":398936,"journal":{"name":"2013 13th Canadian Workshop on Information Theory","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126051090","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

Integrating prior knowledge in time series alignment: Prior Optimized Time Warping 在时间序列比对中整合先验知识:先验优化时间翘曲

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621621

Xiaoguang Yan, W. Gage, A. Eckford

引用次数: 0

An enhanced cross-layer authentication mechanism for wireless communications based on PER and RSSI 一种基于PER和RSSI的增强无线通信跨层认证机制

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621590

Peng Hao, Xianbin Wang, A. Refaey

{"title":"An enhanced cross-layer authentication mechanism for wireless communications based on PER and RSSI","authors":"Peng Hao, Xianbin Wang, A. Refaey","doi":"10.1109/CWIT.2013.6621590","DOIUrl":"https://doi.org/10.1109/CWIT.2013.6621590","url":null,"abstract":"Recently physical layer attributes and statistics have been exploited in securing wireless communications. However, one major obstacle of physical layer security techniques is that not all of these attributes are accessible in practical wireless communication platforms. More precisely, once the hardware of a physical transceiver is implemented, most of the physical layer attributes are not accessible due to the highly integrated circuits. Consequently, it becomes essential to develop implementable security enhancement techniques by utilizing all available attributes and statistics at different layers of wireless communication networks. In this paper, we consider the packet error rate (PER) and the received signal strength indicator (RSSI) in IEEE 802.11 networks to improve the wireless communication security. These two unique user and environment dependent attributes are readily available in most of the currently deployed IEEE 802.11 platforms. To enhance the spoofing attack detection capability, we propose a practical authentication scheme by monitoring and analyzing the PER and RSSI at the same time. The hypothesis testing model for the proposed authentication using PER and RSSI as two testing variables is presented. In addition, a decision rule for authentication, which is able to differentiate between a legitimate transmitter and a potential attacker by combining both attributes together, is developed. To evaluate the feasibility of our proposed scheme, lab experiments have been conducted using an IEEE 802.11g Atheros platform. The proposed authentication technique is validated by the experimental and simulation data. Our final authentication results confirm the improved spoofing detecting capability of the proposed technique over the single-variable based authentication.","PeriodicalId":398936,"journal":{"name":"2013 13th Canadian Workshop on Information Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131115290","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: 15

Approximate bounds for limited backhaul uplink multicell processing with single-user compression 单用户压缩下有限回程上行多小区处理的近似边界

2013 13th Canadian Workshop on Information Theory Pub Date : 2013-06-18 DOI: 10.1109/CWIT.2013.6621603

Yuhan Zhou, Wei Yu

{"title":"Approximate bounds for limited backhaul uplink multicell processing with single-user compression","authors":"Yuhan Zhou, Wei Yu","doi":"10.1109/CWIT.2013.6621603","DOIUrl":"https://doi.org/10.1109/CWIT.2013.6621603","url":null,"abstract":"This paper studies single-user compression for the uplink multi-cell processing (MCP) model where multiple base-stations are connected to a central processor via noiseless backhaul links with a sum capacity constraint. The proposed scheme is based on the virtual multiple-access channel (V-MAC) architecture, where the base-stations quantize the received signals and send the quantized bits to the central processor, and at the decoder side the central processor first recovers the quantized signals then decodes the user messages in a successive manner. This paper focuses on the use of single-user compression in the V-MAC architecture, which is significantly simpler to implement than Wyner-Ziv compression. The main result of this paper is that single-user compression can achieve the sum capacity of the MCP model to within a constant gap under two specific scenarios. First, we define a diagonally dominant channel criterion and show the constant-gap result for the case when the covariance matrix of the received signals across the base-stations is κ-strictly diagonally dominant for some constant κ > 1. Second, we show that the constant-gap result holds for a special class of Wyner channel models in the weak interference regime.","PeriodicalId":398936,"journal":{"name":"2013 13th Canadian Workshop on Information Theory","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134361712","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