2012 National Conference on Communications (NCC)最新文献

筛选
英文 中文
Dynamic stochastic resonance-based improved watermark extraction from audio signal 基于动态随机共振的改进音频信号水印提取方法
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176799
O. Krishna, R. K. Jha, P. Biswas, M. Mushrif
{"title":"Dynamic stochastic resonance-based improved watermark extraction from audio signal","authors":"O. Krishna, R. K. Jha, P. Biswas, M. Mushrif","doi":"10.1109/NCC.2012.6176799","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176799","url":null,"abstract":"In this paper a dynamic stochastic resonance (DSR)-based watermark extraction technique from audio signal in discrete wavelet transform domain has been presented. The watermark embedding has been done in detail coefficient of DWT transformed audio signal. DSR improves the authenticity of the extraction process by utilizing noise or degradation introduced during different signal processing attacks. DSR is an iterative process that tunes the coefficient of possibly attacked watermarked audio signal so that effect of noise is suppressed and hidden information is enhanced. An adaptive optimization procedure has been adopted for selection of bistable parameters to achieve maximum correlation coefficient under minimum computational complexity. Resilience of this technique has been tested in presence of various signal processing attacks. Using proposed technique robust extraction of watermark is obtained without trading off the audibility of audio signal.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132745429","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
Amplitude normalization in blind modulation classification 盲调制分类中的幅度归一化
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176788
Gaurav Jyoti Phukan, P. Bora, A. Rajesh, C. Ramesh
{"title":"Amplitude normalization in blind modulation classification","authors":"Gaurav Jyoti Phukan, P. Bora, A. Rajesh, C. Ramesh","doi":"10.1109/NCC.2012.6176788","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176788","url":null,"abstract":"The classification of digital modulation schemes plays an important role in communication intelligence (COMINT) and other related applications. The existing algorithms for modulation classification consider a semi-blind scenario, where certain signal parameters are assumed to be known. The pre-processing accuracy of signal parameters like the symbol rate, the center frequency, the carrier phase and the signal amplitude etc. has direct implication on classification. Here we address the case of model mismatch due to the amplitude uncertainty in maximum likelihood (ML) classification and propose a new approach to mitigate the situation. The method is based on the normalization of received signal amplitude using fuzzy clustering algorithm. Simulation results are presented to show the robustness of the algorithm for blind scenario. Concluding remarks are made with the scope for future work.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131379565","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
Faster BIC segmentation using local speaker modeling 使用本地说话人建模更快的BIC分割
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176884
R. Travadi, G. Saha
{"title":"Faster BIC segmentation using local speaker modeling","authors":"R. Travadi, G. Saha","doi":"10.1109/NCC.2012.6176884","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176884","url":null,"abstract":"Segmentation is typically the most computationally expensive step involved in majority of speaker diarization systems. Bayesian Information Criterion (BIC) is a very widely adopted method for segmentation of audio data. While BIC returns fairly good results in terms of segmentation performance, it suffers from the problem of enormous complexity. Moreover, BIC based diarization systems encounter the worst case complexity when there is no change point in the input audio stream at all. Many audio streams contain fairly large segments separated by a very few change points. In such cases, it becomes impractical to employ BIC segmentation because of its complexity. In this paper, we have proposed a modification to the baseline BIC segmentation scheme, which makes use of local search information to reduce the overall complexity of the segmentation procedure. The results have been tested on several audio streams from broadcast news and the diarization runtime has been found to get reduced by a factor of 3.45, with a marginally better segmentation performance.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115590259","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
Timely delivery of video data in staircase scheme 楼梯方案中视频数据的及时传送
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176798
S. Chand, H. Om
{"title":"Timely delivery of video data in staircase scheme","authors":"S. Chand, H. Om","doi":"10.1109/NCC.2012.6176798","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176798","url":null,"abstract":"The staircase scheme is one of the important broadcasting schemes. It however does not provide the video data to all users on time. This problem has been overcome in the conservative staircase scheme at the cost of bandwidth. The number of segments in the conservative staircase scheme is less and hence the segment size is large, which signifies the user's waiting time. Thus, the conservative staircase scheme has more user's waiting time than the staircase scheme. In this paper, we propose a hybrid scheme of the staircase and conservative staircase schemes that provides the video data to users on time and has better performance than the conservative staircase scheme for the user's waiting time.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115688348","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
Optimal user association in WiMAX MMR (802.16j) metworks WiMAX MMR (802.16j)网络中的最优用户关联
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176781
P. Raghu, P. Chaporkar
{"title":"Optimal user association in WiMAX MMR (802.16j) metworks","authors":"P. Raghu, P. Chaporkar","doi":"10.1109/NCC.2012.6176781","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176781","url":null,"abstract":"IEEE 802.16j standard defines the WiMAX Mobile Multihop Relay (MMR) networks. Multihop relays are introduced to improve the network throughput and to extend the coverage area of the network. In MMR networks, the MR-BS (Multihop Relay Base Station) has to associate each User (MS) with an Access Station which can be either one of the RS or MR-BS itself. Intuitively, MR-BS can select an Access Station for MS based on Maximum SINR or Minimum Traffic or Minimum Number of Hops. However, such association schemes will lead to inefficient resource utilization. In this paper, we propose an association scheme that guarantees the required QoS and minimize the resources required to serve an MS. The proposed association scheme exploits the frame scheduling to decide on access station for an MS. By allocating minimum possible resources to a each user without violating the user service requirement, we can accommodate maximum number of users within the current frame. The frame scheduling considered for the analysis is Even-Odd scheduling which is recommended by the standard [1]. The simulation results show that the proposed algorithm will result in efficient resource utilization and have less user drop percentage compared with the other intuitive algorithms of choosing Access Station based on Maximum SINR or Minimum Number of Hops or Minimum Traffic.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116457977","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
On the statistics of the fading parameters of the α-μ distribution: Field trials and validation α-μ分布衰落参数的统计方法:现场试验与验证
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176756
A. Krishnan, C. L. Selvati, U. Dias, M. Yacoub
{"title":"On the statistics of the fading parameters of the α-μ distribution: Field trials and validation","authors":"A. Krishnan, C. L. Selvati, U. Dias, M. Yacoub","doi":"10.1109/NCC.2012.6176756","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176756","url":null,"abstract":"This paper presents the results of outdoor field trial measurements in order to obtain the probability density functions and the autocorrelation functions of the fading parameters of the α-μ distribution. The ranges of possible practical values of the α and μ fading parameters are also obtained from the empirical data. In addition, the instantaneous magnitude variations of α and μ considering the mobile receiver displacement are estimated and discussed. The results provide important information about the practical usefulness of the α-μ fading model in mobile communication systems.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122748296","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
Quantifying the improvement in energy savings for LTE eNodeB baseband subsystem with technology scaling and multi-core architectures 通过技术扩展和多核架构量化LTE eNodeB基带子系统的节能改进
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176833
H. K. Boyapati, R. Rajakumar, S. Chakrabarti
{"title":"Quantifying the improvement in energy savings for LTE eNodeB baseband subsystem with technology scaling and multi-core architectures","authors":"H. K. Boyapati, R. Rajakumar, S. Chakrabarti","doi":"10.1109/NCC.2012.6176833","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176833","url":null,"abstract":"Recent wireless broadband cellular standards are aimed at making provisions for supporting very high data rate applications in limited available bandwidth. The most sophisticated as well as computationally complex subsystem of a transceiver of any such system is the baseband processing part of the system. A multi-core processor is typically needed to provide the required computational power for implementing the complex baseband processing subsystem such as that of LTE transceiver. The energy consumption in the baseband part of subsystem is a very significant component of the total energy expenditure of a cellular radio system, particularly when system employs MIMO and advanced VLSI state of art. This paper aims at reducing the energy consumption and also quantify the achievable energy savings by applying the recent trends in VLSI such as CMOS technology scaling and usage of new heterogeneous multi-core architectures specific to signal processing. To be able to explore and apply these energy efficient techniques, we have first estimated the energy consumption in LTE baseband functions then we have explored possible energy savings obtained from technology scaling and optimum heterogeneous combination of architectures for mapping baseband algorithms.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124604126","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
Power and delay optimal policies for wireless systems 无线系统的功率与延迟最优策略
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176758
K. Satya, A. Lalitha, V. Sharma
{"title":"Power and delay optimal policies for wireless systems","authors":"K. Satya, A. Lalitha, V. Sharma","doi":"10.1109/NCC.2012.6176758","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176758","url":null,"abstract":"In this paper we consider a single discrete time queue with infinite buffer. The channel may experience fading. The transmission rate is a linear function of power used for transmission. In this scenario we explicitly obtain power control policies which minimize mean power and/or mean delay. There may also be peak power constraint.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127160717","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
A novel hybrid node architecture for reducing time delay in Wavelength Division Multiplexed (WDM) translucent network 一种用于减少波分复用(WDM)半透明网络时延的新型混合节点结构
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176843
S. Iyer, Shree Prakash Singh
{"title":"A novel hybrid node architecture for reducing time delay in Wavelength Division Multiplexed (WDM) translucent network","authors":"S. Iyer, Shree Prakash Singh","doi":"10.1109/NCC.2012.6176843","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176843","url":null,"abstract":"The practical deployment of widely favoured transparent optical networks is prohibitive as transmission reach of optical signals in such networks is limited by accumulation of physical layer impairments (PLIs). Translucent optical networks have thus become a viable solution and are seen as technically feasible in the near future. In translucent networks, the optical-electrical-optical (OEO) conversion process involved for both, regeneration and/or wavelength conversion leads to significant time delay in data and voice transmission, which becomes a performance bottleneck. In this paper, we propose a hybrid translucent node architecture which performs OEO conversion when 1) only regeneration or 2) simultaneous regeneration and wavelength conversion is required but uses an all-optical wavelength converter when only wavelength contention is to be resolved, thereby reducing the delay involved due to OEO conversion. Performance of the hybrid node is compared to translucent and transparent node architectures present in literature and results clearly show that the use of hybrid node gives the same blocking performance compared to nodes which use OEO conversion for both, regeneration and/or wavelength conversion but incurs less time delay. The results also indicate that there exists a definitive trade-off between cost of the network and OEO conversion time delay.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127212436","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: 10
Burst error correction using partial fourier matrices and block sparse representation 利用部分傅立叶矩阵和块稀疏表示进行突发错误校正
2012 National Conference on Communications (NCC) Pub Date : 2012-04-03 DOI: 10.1109/NCC.2012.6176836
N. Sriram, B. S. Adiga, K. Hari
{"title":"Burst error correction using partial fourier matrices and block sparse representation","authors":"N. Sriram, B. S. Adiga, K. Hari","doi":"10.1109/NCC.2012.6176836","DOIUrl":"https://doi.org/10.1109/NCC.2012.6176836","url":null,"abstract":"There is a strong relation between sparse signal recovery and error control coding. It is known that burst errors are block sparse in nature. So, here we attempt to solve burst error correction problem using block sparse signal recovery methods. We construct partial Fourier based encoding and decoding matrices using results on difference sets. These constructions offer guaranteed and efficient error correction when used in conjunction with reconstruction algorithms which exploit block sparsity.","PeriodicalId":178278,"journal":{"name":"2012 National Conference on Communications (NCC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116926922","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
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
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