By Topic

Electronics Letters

Issue 20 • September 27 2012

Filter Results

Displaying Results 1 - 25 of 43
  • In brief

    Publication Year: 2012, Page(s): 1244
    IEEE is not the copyright holder of this material | PDF file iconPDF (90 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interview

    Publication Year: 2012, Page(s): 1244
    IEEE is not the copyright holder of this material | PDF file iconPDF (84 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Lighting the fuse

    Publication Year: 2012, Page(s): 1245
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (241 KB)

    Optical network operators could find it easier to predict the limits of their infrastructure in the future thanks to an experimentally proven model of fibre fuse effect dynamics. Researchers from the Instituto of Telecomunicaçoes and the University of Aveiro in Portugal have shown how the velocity of the fuse zone depends on the optical intensity of the signal, and have identified a 2... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Jetsetting memories

    Publication Year: 2012, Page(s): 1246
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (185 KB)

    Researchers from the Jeju National University in Korea have proposed a method for depositing titanium dioxide (TiO2) films onto flexible polymer substrates. The method, known as electrohydrodynamic printing, has been used in other printed circuit technology, and the group have used the technique's advantages to improve the manufacture of flexible memory devices. Titanium dioxide was the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magneto-electric monopole antenna for terminal multiband applications

    Publication Year: 2012, Page(s):1249 - 1250
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (401 KB)

    Presented is a multiband terminal antenna providing two wide bands for covering seven-band LTE/GSM/UMTS operation. This new antenna comprises an electric monopole with parasitic shorted strip and two back-to-back slot monopoles, which can be seen as magnetic monopoles. The two slot monopoles are excited by the coupling of two microstrip stubs on the back side, and the electric monopole is connecte... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Compact dual-band-notched UWB planar monopole antenna with modified CSRR

    Publication Year: 2012, Page(s):1250 - 1252
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (367 KB)

    To prevent the interference problem due to existing nearby communication systems within the UWB operating frequency, a compact dual-band-notched UWB antenna is presented. A novel modified complementary split-ring resonator (CSRR) is etched inside the inner patch to obtain a band-notched function. The proposed antenna occupies a compact area of 22 × 26 × mm2. The measuremen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dual-mode planar applicator for simultaneous microwave heating and radiometric sensing

    Publication Year: 2012, Page(s):1252 - 1253
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (264 KB)

    Combined heating and radiometric sensing of body tissues is attractive in certain medical applications. Presented for the first time is a novel dual-mode planar applicator, consisting of two concentric annular slots, intended for use in a microwave blood perfusion measurement system. Measurement results are presented to characterise the S-parameters and heating profile of the applicator at the fre... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Bioimpedance spectroscopy tensor probe for anisotropic measurements

    Publication Year: 2012, Page(s):1253 - 1255
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (272 KB)

    The tetrapolar electrode configuration used in bioimpedance suffers from negative sensitivity and is confounded by anisotropic tissue such as blood vessels or muscle and nerve fibres. Proposed is a circular array of electrodes to focus current directly underneath the probe and provide anisotropy information. It is shown that an implementation using 16 miniature electrodes is able to outperform the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optimised waveform design for radar sensor aimed at contactless health monitoring

    Publication Year: 2012, Page(s):1255 - 1257
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (380 KB)

    A 5.8-7.02-GHz radar sensor for remote health monitoring is reported. A proper radar waveform has been investigated aiming at fall detection and tagless localisation in home environments. The solution is based on a hybrid approach, combining continuous wave radar with stepped frequency features. Results show the ability in localising persons and in distinguishing between normal and fall movements,... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Successive approximation pipelined ADC with one clock cycle conversion rate

    Publication Year: 2012, Page(s):1257 - 1258
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (193 KB)

    An N-bit successive approximation pipelined (SAP) analogue-to-digital converter (ADC) with a conversion rate equal to the clock frequency is presented. The ADC implements the successive approximation algorithm using parallelism and pipelining to sample the input and generate an N-bit digital output at each clock cycle. The latency is N clock cycles. The requirement for the res... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Area efficient concurrent error detection and correction for parallel filters

    Publication Year: 2012, Page(s):1258 - 1260
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (88 KB)

    In modern signal processing circuits, it is common to find several filters operating in parallel. Proposed is an area efficient technique to detect and correct single errors occurring in pairs of parallel filters that have either the same input data or the same impulse response. The technique uses a primary implementation comprised of two independent filters and a redundant implementation that sha... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Differential-read 8T SRAM cell with tunable access and pull-down transistors

    Publication Year: 2012, Page(s):1260 - 1261
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (363 KB)

    A novel 8T SRAM cell with high stability and write speed is proposed. The tunable access transistors and pull-down transistors are used to favour the desired operations. During a write operation, the strength of access transistors is enhanced, resulting in improving noise-immunity and write speed. The strength of pull-down transistors is enhanced during the read operation, hence exhibiting a high ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electrohydrodynamic printed TiO2 flexible memory device - fabrication and characterisation

    Publication Year: 2012, Page(s):1261 - 1263
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (289 KB)

    Presented is the resistive memory behaviour of a device of Ag/TiO2/Ag structure, patterned on a polyethersulfone flexible substrate fabricated through the electrohydrodynamic patterning method. The fabricated device showed stable resistive bipolar switching behaviour. Performance of the device was also evaluated in bending state and resistance values of high and low resistance states we... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • PSO-based automatic relevance determination and feature selection system for hyperspectral image classification

    Publication Year: 2012, Page(s):1263 - 1265
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (124 KB)

    Based on the particle swarm optimisation algorithm, an ARD-FS system integrating the automatic relevance determination (ARD) and the feature selection (FS) for a Gaussian process classifier (GPC) is proposed. The ARD-FS system aims to reduce the complexity of the GPC and simultaneously improve the classification accuracy. It is applied to the hyperspectral images and experimental results demonstra... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Sparse deep-learning algorithm for recognition and categorisation

    Publication Year: 2012, Page(s):1265 - 1266
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (156 KB)

    Presented is a deep-learning method for pattern classification and object recognition. The proposed methodology is based on an optimised version of the hierarchical temporal memory (HTM) algorithm and it preserves its basic structure, along with a tree structure of connected nodes. The tree structured scheme is inspired by the human neocortex, which provides great capabilities for recognition and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Encoding shoe sole patterns using multilayer graphs

    Publication Year: 2012, Page(s):1266 - 1268
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (277 KB)

    A graph based encoding method for shoe sole patterns is presented. The graph edit distance is extended recursively to measure the similarity between two multilayer graphs. A pilot system is implemented and the validity of the proposed method is tested with 300 real sole images. The correct retrieval rate is about 93%. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Low-power and small-area scan driver using depletion-mode a-IGZO TFTs for ultra-high-resolution displays

    Publication Year: 2012, Page(s):1268 - 1269
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (303 KB)

    A low-power and small-area scan driver using depletion-mode amorphous-InGaZnO (a-IGZO) thin-film transistors (TFTs) is proposed for 10-inch quadruple extended graphics array (QXGA, 2048 × 1536) panels. The proposed scan driver is realised in a small area using 11 TFTs and improves power consumption by removing short circuit current. Measured results show that the power consumption of the pr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Recognition of blurred faces using local phase pattern

    Publication Year: 2012, Page(s):1269 - 1271
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (82 KB)

    A novel local phase pattern (LPP) descriptor is proposed for blurred face recognition. The descriptor extracts blur invariant features - the local phase pattern information of the Fourier transform computed locally in a window for every image position. In face image analysis, histograms of LPP labels computed within local regions are used as a face descriptor similarly to the widely used local bin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Two-stage EWMA-based H.264 SVC bandwidth adaptation

    Publication Year: 2012, Page(s):1271 - 1272
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (198 KB)

    Proposed is a new scalable video coding (SVC) bandwidth (BW) adaptation method over a WIFI. To cope with the variable channel condition, a new channel prediction model is proposed based on the modified two-stage exponentially weighted moving average (EWMA); also, to provide fine grain BW adaptation of H.264 SVC, the slice group (SG)-based layer switching method is proposed based on the channel pre... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hybrid coding scheme based on repeat-accumulate and polar codes

    Publication Year: 2012, Page(s):1273 - 1274
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (171 KB)

    A hybrid coding scheme using repeat-accumulate (RA) code and polar code as subcodes is presented to improve the performance of block error probability. As the simplest turbo-like code, punctured RA code is introduced to improve the reliability of the hybrid scheme. A low complexity algorithm, belief propagation/successive cancellation hybrid decoding algorithm is proposed. Compared with polar code... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Affine projection algorithm with adaptive error constraint

    Publication Year: 2012, Page(s):1274 - 1276
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (278 KB)

    A new affine projection algorithm (APA) which incorporates an adaptive constraint on the cost function is proposed, which is developed by constraining the cost function to statistics of the channel noise and replacing it as an adaptive constraint parameter. The motivation behind this work is that the use of partial knowledge of a channel in adaptation would be beneficial for improving convergence ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of quasi-orthogonal STBCs with delay optimality

    Publication Year: 2012, Page(s):1276 - 1278
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (154 KB)

    Proposed is a systematic structure for producing quasi-orthogonal space-time block codes (QO-STBCs) to achieve delay optimality for any even number of transmit antennas. These codes are simple extensions of the conventional ABBA code with four transmit antennas, but they are based on a different symbol pairing that uses an independent cyclic-shifting operation for each input sub-vector. When compa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Lossy LAS file compression using uniform space division

    Publication Year: 2012, Page(s):1278 - 1279
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB)

    A new method is introduced for the lossy compression of a LAS file. LAS files store the results from LiDAR scanning, and contain a huge amount of points with associated scalar values. The proposed method consists of four steps: eliminating those points within the oversampled regions, moving the position of the remaining points within the user-specified limits, variable-length coding, and arithmeti... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Memory improved proportionate affine projection sign algorithm

    Publication Year: 2012, Page(s):1279 - 1281
    Cited by:  Papers (13)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (266 KB)

    A new proportionate affine projection sign algorithm is proposed for network echo cancellation. It uses a recursive procedure and takes into account the previously computed proportionate coefficients. It is shown that the proposed algorithm can obtain a lower steady-state misalignment than other affine projection sign algorithms for different echo paths, impulsive interferences and step sizes. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reed-Solomon code-based sparse channel estimation for OFDM systems

    Publication Year: 2012, Page(s):1281 - 1282
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (128 KB)

    A novel efficient algorithm for the estimation of sparse channel impulse response (CIR) is addressed for OFDM systems. The innovation of this algorithm comes from the fact that it equivalently sees the CIR estimation problem as a decoding one. To do so, it exploits first the channel sparsity through the modelling of the sparse CIR as a Bernoulli-Gaussian process. Then, using the relationship betwe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

Electronics Letters is internationally renowned for its rapid communication of new developments and emerging topics across the broad and interdisciplinary field of modern electronics and electrical engineering.

Full Aims & Scope

Meet Our Editors

Editors-in-Chief

Professor Chris Toumazou
Director of the Biomedical Institute
Imperial College, London, UK

Professor Ian White
Head of Photonics Research
University of Cambridge, UK