Hazar Yueksel, G. Cherubini, R. Cideciyan, A. Burg, T. Toifl
{"title":"Design considerations on sliding-block viterbi detectors for high-speed data transmission","authors":"Hazar Yueksel, G. Cherubini, R. Cideciyan, A. Burg, T. Toifl","doi":"10.1109/ICSPCS.2016.7843366","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843366","url":null,"abstract":"We investigate the impact of synchronization and survivor path memory lengths on latency and the error rate of a sliding-block receiver that implements the Viterbi algorithm for high-speed data transmission over dispersive channels. All of the previous work on Viterbi detection has assumed that the synchronization length equals the survivor path memory length. However, we demonstrate that both of these lengths differ significantly from each other in an optimized parallelized high-speed Viterbi detector design which minimizes latency and implementation complexity while achieving the error-rate performance of a Viterbi detector with very long synchronization and survivor path memory lengths. Uncoded four-level pulse-amplitude-modulation (4-PAM) and four-dimensional 5-PAM trellis-coded modulation transmission systems are considered. For these two systems, sliding-block receivers that include a reduced-state Viterbi detector with two sub states and an eight-state Viterbi detector with embedded decision feedback, respectively, are assumed. We conduct a simulation study to provide insights into the various tradeoffs that can be achieved in terms of implementation complexity, latency, and error-rate performance.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125023590","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}
Abdelhamid Ladaycia, Anissa Zergaïnoh-Mokraoui, K. Abed-Meraim, A. Belouchrani
{"title":"What semi-blind channel estimation brings in terms of throughput gain ?","authors":"Abdelhamid Ladaycia, Anissa Zergaïnoh-Mokraoui, K. Abed-Meraim, A. Belouchrani","doi":"10.1109/ICSPCS.2016.7843301","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843301","url":null,"abstract":"In most wireless communication systems, channel estimation is required for equalization and symbol detection. It is currently achieved via dedicated pilot symbols consuming a significant part of the throughput and global resources especially for future systems. This paper shows that semi-blind identification techniques reduces significantly this overhead. By using the Cramer Rao Bound tool, we compare the estimation error variance of the pilot based and semi-blind based techniques for a SIMO-OFDM system. The comparisons illustrate that, depending on the context, the semi-blind approach can lead up to 90% reduction of the pilot sequence size without affecting the channel estimation quality.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123707019","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":"Monostatic ISAR signal processing: A new perspective","authors":"A. Cantoni","doi":"10.1109/ICSPCS.2016.7843298","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843298","url":null,"abstract":"Inverse Synthetic Aperture Radar (ISAR) derives its name from the fact that a synthetic aperture is formed by exploiting the movement of the target with respect to radar rather than by the movement of the radar platform radar. In ISAR applications, the target motion is usually not known and the target is also considered non-cooperative. An objective of the signal processing in ISAR is to obtain 2D or even 3D “image” of the target which represents the spatial distribution of various facets on the target that reflect electromagnetic waves when the target is illuminated by the radar.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122091563","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}
J. Roth, M. Tummala, J. McEachen, James W. Scrofani, R. DeGabriele
{"title":"Maximum likelihood geolocation in LTE cellular networks using the timing advance parameter","authors":"J. Roth, M. Tummala, J. McEachen, James W. Scrofani, R. DeGabriele","doi":"10.1109/ICSPCS.2016.7843379","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843379","url":null,"abstract":"Wireless geo location is an increasingly relevant area of research as cellular technology becomes ever more ubiquitous. In this work we consider the timing advance parameter in Long Term Evolution cellular networks to this end. We also evaluate a previously introduced method of position estimation augmentation called Cellular Synchronization Assisted Refinement (CeSAR). We first develop the concept of geometric dilution of precision and the Cramer-Rao Lower Bound (CRLB) to motivate an intuition for positioning accuracy. We then derive an exact maximum likelihood estimator (MLE) for TA-specific position estimation. While the exact MLE proves to be computationally difficult, it is shown to be equivalent to the MLE in the general case of Gaussian noise. This equivalency is then used to propose an approximate MLE (AMLE). Through simulation, the AMLE is shown to meet the CRLB. Real-world data that includes urban, suburban, line-of-sight, and non-line-of-sight channels are also presented and used to build a realistic model of the TA-specific channel. This model is then used to evaluate the performance of the AMLE and CeSAR in non-line-of-sight and line-of-sight conditions. Our results suggest that the proposed method may be appropriate for meeting the Federal Communication Commission's E-911 requirements.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"15 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113963856","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":"Comparative analysis of geometrical properties of sampling schemes on the sphere","authors":"U. Elahi, Z. Khalid, R. Kennedy","doi":"10.1109/ICSPCS.2016.7843316","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843316","url":null,"abstract":"In this work, we carry out the comparative analysis of the geometrical properties of the sampling schemes on the sphere. Among the sampling schemes devised on the sphere, we focus on equiangular sampling, Gauss-Legendre (GL) quadrature based sampling, optimal-dimensionality sampling, sampling points of extremal systems and spherical design as these schemes support the accurate representation of the band-limited signals. We analyse sampling efficiency, minimum geodesic distance, mesh norm, mesh ratio and Riesz s-energy for these sampling schemes. Since these sampling schemes require different number of samples for the accurate representation of a band-limited signal and therefore have different sampling efficiency, we formulate these geometrical properties to take into account the sampling efficiency for a meaningful comparison. We illustrate that the optimal dimensionality, extremal system and spherical design sampling schemes exhibit desirable geometrical properties. Among these schemes, extremal system sampling scheme has superior geometrical properties. However, the accuracy of the representation of a band-limited signal degrades with the increase in band-limit for extremal system sampling scheme, due to which we propose to use extremal point sampling scheme for small band-limits. We also propose to use optimal dimensional sampling scheme for moderate to large band-limits as it exhibits desirable geometrical properties and has the capability to accurately represent the band-limited signal.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132581562","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":"Outage probability of multiple relay networks over κ-μ shadowed fading","authors":"Alekhya Kodide, T. Chu, H. Zepernick","doi":"10.1109/ICSPCS.2016.7843312","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843312","url":null,"abstract":"In this paper, we study the outage probability of an opportunistic multiple relay communication system over κ-μ shadowed fading channels for both amplify-and-forward and decode-and-forward relaying protocols. We first provide an exact analysis of the impact of κ-μ shadowed fading on the outage probability of the system. To simplify the obtained analytical expression of the outage probability, we further approximate the κ-μ, shadowed fading channel by a Nakagami-m fading model. In order to illustrate the suitability of the approximation, numerical results are provided revealing that the exact outage probability using κ-μ, shadowed fading and the results obtained by approximating the fading by the Nakagami-m fading model match well as long as the parameters of the shadowed fading translate to integer values of the fading severity parameter m. Further, Monte-Carlo simulations have been conducted to validate the derived analytical expressions of the outage probability. Finally, the effect of network parameters such as the average transmit power at the source and the relay, the impact of the number of relays, the influence of the transmission distances and the fading parameters on the outage probability of the considered system is also illustrated through numerical examples.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131397976","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}
Emma M. Kidman, Matthew J. A. D'Souza, Surya P. N. Singh
{"title":"A wearable device with inertial motion tracking and vibro-tactile feedback for aesthetic sport athletes Diving Coach Monitor","authors":"Emma M. Kidman, Matthew J. A. D'Souza, Surya P. N. Singh","doi":"10.1109/ICSPCS.2016.7843371","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843371","url":null,"abstract":"Research into the kinematic training of elite divers shows a demand for diver training using biomechanical feedback. With suitable inertial data and tactile feedback, divers and their coaches could better understand their dives and failure modes. This would help improve technique and reduce fatigue during both training and competition, resulting in higher quality dives. We developed the Diving Coach Monitor (DCM) that can wire-lessly stream inertial data to an assistant as well as vibrotactially signal an athlete during a dive. The DCM is comprised of a wearable sensor module, worn by a diver and a smartphone application for the diver's coach. The diver's coach uses the smartphone application to signal the wearable sensor module, throughout the training session. The wearable sensor module receives the control commands and acts accordingly with one of the following actions: vibrate (to signal the diver); commence inertial data sampling; stop inertial data sampling and transmit data back to the smartphone application. While the DCM is water-proof, we trialled the DCM in a “dry-land” environment, as divers often train with trampoline spotting rigs and (occasionally) a safety harness. We also conducted multiple trial sessions with circus and gymnastic aerial apparatus and athletes. Our tests showed accurate measurement and low latency compared to video motion analysis.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133749750","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}
Aidan E. W. George, Christine Pickersgill, B. Schwerin, Stephen So
{"title":"A comparison of estimation methods in the discrete cosine transform modulation domain for speech enhancement","authors":"Aidan E. W. George, Christine Pickersgill, B. Schwerin, Stephen So","doi":"10.1109/ICSPCS.2016.7843347","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843347","url":null,"abstract":"In this paper, we present a new speech enhancement method that processes noise-corrupted speech in the discrete cosine transform (DCT) modulation domain. In contrast to the Fourier transform, the DCT produces a real-valued signal. Therefore, modulation-based processing in the DCT domain may allow both acoustic Fourier magnitude and phase information to be jointly estimated. Based on segmental SNR and the results of blind subjective listening tests on speech corrupted with various coloured noises, the application of the subspace method in the DCT modulation domain processing was found to outperform all other methods evaluated, including the LogMMSE method.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115492381","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":"Artificial bandwidth extension to improve automatic emotion recognition from narrow-band coded speech","authors":"A. Albahri, C. S. Rodriguez, M. Lech","doi":"10.1109/ICSPCS.2016.7843305","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843305","url":null,"abstract":"Narrow-band speech coding techniques were previously found to reduce the accuracy of automatic Speech Emotion Recognition (SER), as well as speech and speaker recognition rates. Artificial Bandwidth Extension (ABE) based on spectral folding and spectral envelope estimation has been applied to compressed narrowband speech to test if an improvement in SER can be achieved. The modelling and classification of speech was performed with a benchmark approach based on the GMM classifier and a set of speech acoustic parameters including MFCCs, TEO and glottal parameters. The tests used the Berlin Emotional Speech data base. In general, ABE led to an improvement of SER accuracy; however the amount of improvement varied between different features, genders, and speech compression rates. In all cases, SER accuracy with ABE was at least 10% lower than for uncompressed speech.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125758158","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}
Xiaojie Wang, Benedikt Leible, Wenhao Wang, D. Rorich, S. Brink
{"title":"Joint IQ imbalance compensation and channel estimation in coherent optical OFDM systems","authors":"Xiaojie Wang, Benedikt Leible, Wenhao Wang, D. Rorich, S. Brink","doi":"10.1109/ICSPCS.2016.7843310","DOIUrl":"https://doi.org/10.1109/ICSPCS.2016.7843310","url":null,"abstract":"Coherent optical orthogonal frequency division multiplexing (CO-OFDM) is considered to be promising technique for meeting the ever increasing demand of data rate. It exhibits many advantages of coherent detection and OFDM, making the optical transmission over fiber extremely robust against distortions such as chromatic dispersion and polarisation mode dispersion. However, CO-OFDM is sensitive to IQ imbalance, in particular, when a homodyne (or direct down-conversion) receiver is used. In this paper, we study the impact of transmitter and receiver side IQ imbalance on coherent optical transmission over a single-mode fiber. Moreover, we investigate different methods, particularly in the frequency domain, to jointly compensate the IQ imbalance and to equalize the optical fiber channel, taking the effect of chromatic dispersion into account. The proposed minimum mean square error (MMSE) compensation algorithm shows superior performance, compared to conventional method. Furthermore, an optimum design of training sequence is derived and expressed in a closed-form, which provides significant performance gains even without applying IQ imbalance compensation.","PeriodicalId":315765,"journal":{"name":"2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129236454","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}