2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)最新文献

{"title":"Square/triangular wave generator using fractional capacitor","authors":"Manish Kumar","doi":"10.1109/ICSPCOM.2013.6719827","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719827","url":null,"abstract":"A square/triangular wave generator using fractional capacitor is proposed in the paper. Proposed circuit realization improves the oscillation frequency. The circuit is simulated with PSPICE and realized using active components. The simulated result matches with practical result.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"29 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":"125034836","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}

{"title":"A novel multi band notched octagonal shaped fractal UWB antenna","authors":"S. Tripathi, S. Yadav, V. Vijay, A. Dixit, A. Mohan","doi":"10.1109/ICSPCOM.2013.6719776","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719776","url":null,"abstract":"In this paper, a small novel octagonal shaped ultra wideband (UWB) antenna was designed using Minkowski like fractal geometry including the multi band notch characteristics. The investigated UWB antenna geometry addresses the challenges such as compact size and wideband operating frequency range because of the self-similar and multiple resonance characteristics of the fractal geometry, used in this work. The multiple notches in the ground plane leads to better return loss and the desired operational bandwidth in the 3.1 GHz - 10.6 GHz range. The compact 16.5 mm × 13.5 mm antenna geometry exhibits nearly omnidirectional radiation pattern, proper impedance matching with VSWR <; 2 over the entire UWB frequency range. These characteristics offer opportunities to explore the proposed UWB antenna for various applications.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"236 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":"122157646","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}

{"title":"Improvement in active interference cancellation technique using guard carriers in MB-OFDM UWB system","authors":"Ravinder Kumar, Anshul Tyagi","doi":"10.1109/ICSPCOM.2013.6719840","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719840","url":null,"abstract":"In 2002, FCC has allocated a wide band (3.1-10.6 GHz) of spectrum to UWB systems which can be used without licence but there are some narrowband system already operating in the same frequency band. In order to coexist with existing systems, multiband-OFDM systems should have cognitive radio capabilities to detect and avoid interference to primary user (PU). Active interference cancellation technique is very effective technique to mitigate interference to narrowband systems. In this paper improvement in AIC is proposed by utilizing guard carriers. A notch gain of around 8dB over conventional AIC scheme is achieved.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"8 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":"126980779","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}

{"title":"ARQ protocol studies in underwater communication networks","authors":"Priyanka Kwatra","doi":"10.1109/ICSPCOM.2013.6719768","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719768","url":null,"abstract":"In this work, we aim at exploring new Go-back-N protocols for underwater communications. Beyond the literature survey on various ARQ protocols in propagation delay intensive environments, we have studied the degradation in the channel parameters. Then the new variable window go back N protocol has been proposed and implemented specially for underwater communications. Quantification of probability of error has also been done to a small extent and results compared with the practical scenario.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"27 8 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":"128132917","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}

{"title":"Non-intrusive objective speech quality assessment using a combination of MFCC, PLP and LSF features","authors":"R. Dubey, Arun Kumar","doi":"10.1109/ICSPCOM.2013.6719801","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719801","url":null,"abstract":"In non-intrusive speech quality assessment, original clean speech signal is not used as reference but only the received degraded speech is used for the quality estimation. The processing and perception of speech signals by human auditory system are captured in the perceptual linear prediction coefficients (PLP) and Mel frequency cepstral coefficients (MFCC) features. The line spectral frequencies (LSF) features carry intrinsic information of the formant structure of phoneme which is related to the resonance frequencies of the vocal tract of the speaker during articulation. The combination of PLP, MFCC and LSF features along with the subjective mean opinion score (MOS) of the speech utterances are used to train the joint Gaussian Mixture Model (GMM) by Expectation Maximization (EM) algorithm. The parameters of the joint GMM thus obtained and the combination of PLP, MFCC and LSF features are used to estimate the objective mean opinion score (MOS) of the speech utterances. The correlation of the subjective and the estimated objective MOS is obtained as figure of merit for the speech quality assessment algorithm. To show the efficacy of the method, the results in terms of correlation and root mean square error (RMSE) between the subjective and the estimated objective MOS are compared with ITU-T Recommendation P.563, standard for non-intrusive speech quality assessment on ITU-T supplement-23, NOIZEUS-960 and NOIZEUS-2240 databases.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"128 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":"128185958","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}

{"title":"Magneto-optical surface plasmon resonance structures","authors":"J. Pistora, J. Vlček, M. Lesnak","doi":"10.1109/ICSPCOM.2013.6719758","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719758","url":null,"abstract":"We analyzed for different periodicity and golden films thicknesses the reflectance and Kerr magneto-optical parameters of applied periodical dot sandwich structure. The dot thickness has been fixed to 20 nm, the incidence 632.8 nm laser beam with p-polarized light was used. The results show the sharp reflectance extrema as function of incidence angle. This dependance is importantly modified by Au film thickness. The influence of magneto-optical activity of Fe 2D grating has been studied by Kerr effect in longitudinal configuration. Through the extension of the Yeh's formalism to magnetic crystalline media the magneto-optic formulae in layered structures with magnetic ordering were obtained. The reflectivity was calculated by rigorous coupled wave algorithm (RCWA) implemented in own Matlab code. The maximum of rotation achieves to 4 mdeg, the extreme ellipticity value is about 3 mdeg. These results offer new approaches for MO surface plasmon resonance sensing elements.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"63 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":"131961787","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}

{"title":"Effects of topographic corrections on MODIS sensor satellite imagery of mountainous region","authors":"Sartajvir Singh, R. Talwar","doi":"10.1109/ICSPCOM.2013.6719833","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719833","url":null,"abstract":"Geographic Information System (GIS) plays a vital role in collecting or analyzing land-use/cover change information for environmental impacts and infrastructure management. One of the major problem associated with high spatial resolution (56 square meter/pixel) sensors such as AWiFS that is characterized by low temporal resolution (5 days/cycle), limits the application of remote sensing. The medium spatial resolution (250 square meter/pixel) sensors such as MODIS (1-2 days/cycle), have resolved the problem of low temporal resolution up to a great extent by compromising with spatial resolution. It enhanced the capability of remote sensing to deliver data of larger areas on daily basis. To enhance raw satellite imagery, the preprocessing corrections are crucial to make it appropriate for a specific application such as change detection, resource monitoring or classification etc. It comprises geometric corrections, radiometric correction or atmospheric correction for flat surface terrain. But for mountainous region, topographic corrections are also necessary to be performed on satellite imagery before further consideration. The prominence of topographic corrections are very rarely investigated on land cover mountainous region using MODIS imagery. In present paper, necessary preprocessing corrections along with topographic corrections implemented on MODIS sensor satellite imagery of mountainous region. The consequences are validated by realizing preprocessed topographically corrected and without topographically corrected MODIS sensor satellite imageries on supervised Maximum Likelihood Classifier (MLC). Experiments outcomes confirms that topographically corrected MLC classified imagery achieved better results as compare to MLC classified imagery without topographic correction. It is expected that this instigated paper report on different preprocessing phases of satellite imagery delivers an effective guidance to algorithm designers for accurately use the diverse and complex remotely sensed data of flat as well as mountainous or rugged surface.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","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":"133909423","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}

{"title":"Novel compressors in the sub-threshold regime","authors":"Himani Jawa, K. Gupta","doi":"10.1109/ICSPCOM.2013.6719826","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719826","url":null,"abstract":"With the growing scale of integration, design of circuits with power consumption has become the primary motivation for the development in sub-threshold region. The circuits operating in sub threshold results in ultra-low power due to the use of leakage current which is in the order of nano amperes as the operating current. In many high speed applications, compressors are used to perform the partial product addition needed during multiplication. In this paper two architecture for 4:2 and 5:2 compressors in the sub threshold region is proposed. The paper aims at comparing the power consumption, delay and the power-delay product (PDP) of the two architectures in the sub threshold region. All the simulations have been performed using 0.18um CMOS technology parameters.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"46 Suppl 6 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":"133029838","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}

{"title":"Robust language and speaker identification using image processing techniques combined with PCA","authors":"Deepak Joshi, M. D. Upadhayay, S. Joshi","doi":"10.1109/ICSPCOM.2013.6719785","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719785","url":null,"abstract":"Spoken language and speaker identification has been attracting the researchers across the globe for past several decades. Language identification shares certain similarities with speaker identification; however they both differ from each other in certain aspects. Both language identification and speaker identification problems have till now been dealt with feature extraction techniques like MFCC, PLP, LPCC etc. In this paper, a new feature extraction technique is proposed. Radon transform (RT) is proposed to be used for feature extraction after obtaining the spectrogram from the speech sample. PCA has been used to achieve dimension reduction and to reduce the computational complexity. The performance of the proposed method has been compared for existing identification techniques in the field of language and speaker identification.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"2 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":"127633126","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}

{"title":"Selective soft handover calls drop for OVSF based CDMA networks","authors":"V. Balyan, D. Saini, Prateek Dhawan, Dharmesh K. Nama, Ankit Agarwal","doi":"10.1109/ICSPCOM.2013.6719778","DOIUrl":"https://doi.org/10.1109/ICSPCOM.2013.6719778","url":null,"abstract":"The base stations (BSs) are placed closed to each other in urban areas due to heavy data requirement of mobile networks which leads to frequent soft handover of calls due to movement of mobile stations (MSs) which leads to blocking of calls in different base stations (BSs) at same time due to orthogonal nature of orthogonal variable spreading factor (OVSF) codes in WCDMA networks. In this paper, a scheme is proposed which gives preference to a new call over soft handover calls. Soft handover call(s) are dropped to handle a new call(s). The motion of mobile stations (MSs) maybe random in a cell which leads to increase and decrease of received power at MS from BS. The received power of MSs is compared to select the soft handover call to be dropped. Simulations and results shows improvement in terms of code blocking probability.","PeriodicalId":272955,"journal":{"name":"2013 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION (ICSC)","volume":"77 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":"131315016","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}