2013 9th International Conference on Information, Communications & Signal Processing最新文献_第6页

GPP-based optimization for joint-detection in TD-SCDMA uplink 基于gpp的TD-SCDMA上行链路联合检测优化

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782863

Jinde Zhou, K. Niu, Zhiqiang He, Jiaru Lin

引用次数: 0

On the design of GSC beamformer in reverberant environment 混响环境下GSC波束形成器的设计

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782893

Zhibao Li, K. Yiu

引用次数: 0

A variable quantization technique for image compression using integer Tchebichef transform 基于整数切比切夫变换的图像压缩可变量化技术

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782815

Soni Prattipati, M. Swamy, P. Meher

{"title":"A variable quantization technique for image compression using integer Tchebichef transform","authors":"Soni Prattipati, M. Swamy, P. Meher","doi":"10.1109/ICICS.2013.6782815","DOIUrl":"https://doi.org/10.1109/ICICS.2013.6782815","url":null,"abstract":"In the field of image and data compression there is always a need for novel transform coding techniques promising improved reconstruction and reduced computational complexity. The usage of integer adaptation of the popular discrete cosine transform (DCT) with fixed quantization is prevalent in the field of video compression due to its ease of computation and acceptable performance. However, there exist other polynomial-based orthogonal transforms like discrete Tchebichef transform (DTT), which possess valuable properties like energy compaction, but are potentially unexploited in comparison. The influence of specific features, such as the structure and content, of the image on the quality of reconstructed image after decompression is undeniable. This paper aims to harness this aspect and introduces a technique to adapt the quantization performed during compression according to the characteristics of the image block without any additional computational or transmission overhead. The image compression performance of integer DTT and integer DCT, using both variable and fixed quantization, are evaluated and compared.","PeriodicalId":184544,"journal":{"name":"2013 9th International Conference on Information, Communications & Signal Processing","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121148847","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: 13

Adaptive window selection in estimating dynamic functional connectivity of resting-state fMRI 静息状态fMRI动态功能连通性估计中的自适应窗口选择

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782935

Zhiguo Zhang, Z. Fu, S. Chan, Y. Hung, G. Motta, X. Di, B. Biswal

{"title":"Adaptive window selection in estimating dynamic functional connectivity of resting-state fMRI","authors":"Zhiguo Zhang, Z. Fu, S. Chan, Y. Hung, G. Motta, X. Di, B. Biswal","doi":"10.1109/ICICS.2013.6782935","DOIUrl":"https://doi.org/10.1109/ICICS.2013.6782935","url":null,"abstract":"Investigation of the intrinsic brain networks using the resting-state functional magnetic resonance imaging (rs-fMRI) is generally based on the assumption that the functional organization is stationary across the duration of the scan. Hence, the presence and potential of temporal and spatial dynamics of the functional connectivity (FC), which is usually measured by the correlation coefficients between rs-fMRI signals of two regions, are not taken into account in most of the research. Recent studies have shown that the resting-state brain activities are time-varying in nature with substantial dynamic characteristics. However, an effective method for estimating the time-varying FC is lacking, which is mainly due to the difficulty in choosing an appropriate window to localize the time-varying correlation coefficients (TVCC). In this paper, we introduce a novel method for adaptively estimating the TVCC of non-stationary signals and study its application to infer dynamic FC of rs-fMRI data. The proposed method employs a sliding window with adaptive size, which is selected by a local plug-in rule to minimize the mean square error, to estimate the TVCC locally. Simulation results on synthetic data show that the proposed method outperforms the conventional TVCC estimators with a fixed window. Furthermore, the proposed method is used on real rs-fMRI signals, and the results demonstrate that the FC in the resting state are transient and the variability of FCs between different brain regions differs substantially.","PeriodicalId":184544,"journal":{"name":"2013 9th International Conference on Information, Communications & Signal Processing","volume":"317 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116364752","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: 3

Convex optimization and its applications in robust adaptive beamforming 凸优化及其在鲁棒自适应波束形成中的应用

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782919

Z. Yu, Z. Gu, W. Ser, M. Er

引用次数: 4

Hybrid routing in lossy link mobile ad hoc networks 有损链路移动自组网中的混合路由

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782952

C. Aung, P. Chong, Xinxing Zhao, Anthony Chua Yong Pheng, Tiah Khoon Ng, See Xinyou, Kok Siong Lai

引用次数: 0

Efficient resiliency mechanisms for next generation passive optical networks 新一代无源光网络的有效弹性机制

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782903

Jiajia Chen

{"title":"Efficient resiliency mechanisms for next generation passive optical networks","authors":"Jiajia Chen","doi":"10.1109/ICICS.2013.6782903","DOIUrl":"https://doi.org/10.1109/ICICS.2013.6782903","url":null,"abstract":"Future broadband access networks are expected to cover large service areas while fulfilling high bandwidth request on a per-user basis. The rapidly increasing traffic demand is also driven by the growing popularity of mobile data services, which is placing high-capacity requirement on the backhaul. Due to advances in wavelength division multiplexing (WDM) technology, WDM based architectures have been considered as promising candidates for next generation optical access, such as WDM passive optical network (PON), and hybrid WDM/time division multiplexing (TDM) PON. Meanwhile, resilience technique will play a more prominent role in emerging access networks due to their significantly increased capacity and coverage compared to the current deployments. Therefore, efficient resiliency mechanisms are highly required to enable uninterrupted network operation where a certain level of reliability performance can be guaranteed. In this work, we first evaluate reliability performance of each segment of next generation optical access networks and then identify the most important part for protection. A particular attention is paid to the reduction of failure impact.","PeriodicalId":184544,"journal":{"name":"2013 9th International Conference on Information, Communications & Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128769363","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

Subspace-based blind channel estimation for cyclic prefixed MIMO-OFDM systems using few received blocks 基于子空间的循环前缀MIMO-OFDM系统盲信道估计

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782887

Feng-Jie Yeh, B. Su

引用次数: 5

AVS encoding optimization with perceptual just noticeable distortion model 基于感知仅可察觉失真模型的AVS编码优化

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782937

Qi Cai, Li Song

引用次数: 2

Adaptive Weighted Multi-Element Collaborative Representation for Visual Classification 视觉分类的自适应加权多元素协同表示

2013 9th International Conference on Information, Communications & Signal Processing Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782782

Ganglong Duan, Long Wei, Jianren Wang, Hongqi Wang

引用次数: 0