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Acoustic Radiation Force Impulse (ARFI) imaging is a type of ultrasound elastography used in medicine, particularly for the monitoring and diagnosis of cancers. Medical professionals observe the tissue elasticity of the ARFI equipment for the diagnosis of the cancer. This paper investigates the role of image processing on the ARFI image for the diagnosis of breast tumour. Initially, in the pre-processing...
Dual band Planar Inverted Antenna (PIFA) for Long Term Evolution (LTE) mobile equipment is presented in this paper. The proposed antenna has been designed using HFSS tool by etching three slots in the form of L - shape in the radiating patch of dimension 20mm × 30mm. The operating frequencies of the antenna ranges from 2.25 to 3.32 GHz and 3.32 to 3.74 GHz that covers LTE bands 7, 22, 38, 40, 41,...
The electrocardiogram (ECG) is an important biomedical signal and widely used to monitor the function of heart. Continuous remote monitoring of ECG signal of the patients has become necessary nowadays. Since ECG sensors produces large amount of data continuously, it is difficult to store and transmit ECG records. Hence VLSI based data compression techniques are used for low power wireless transmission...
Prediction of Dengue presents great challenge as the clinical symptoms overlaps with other conventional fever. Dengue viral infection has been reported in more than 100 countries, with total of 2.5 billion people. Testing of prognosis, the stages of dengue such as DF, Dengue Hemorrhagic Fever (DHF) and Dengue Shock Syndrome (DSS) under conventional methods needs frequent blood test information. The...
The low feedback link adaptation technique based on MIESM (mutual information based exponential SNR mapping) has been extensively used in the literature for 802.16 based systems. The previous work on MIESM uses equal modulation order for all the subcarriers in an OFDM block. We have proposed the concept of unequal modulation for the subcarriers in the single OFDM block, and derived a mathematical...
The combination of multiple antennas and multicarrier code division multiple access (MC-CDMA) is a strong candidate for the downlink of future mobile communications. The study of such systems, in scenarios that model real-life transmissions is an additional step towards an optimised achievement. Channel estimation is employed to improve its performance by characterising the channel. In this paper...
This work describes the strategies to improve the channel quality indicator (CQI) for multi-state channels in 802.16e (wimax) based systems. The method includes the use of Exponential effective SNR mapping (EESM) method as part of the modulation/coding selection process and the problems associated with this technique has been studied. MI-ESM (Mutual Information based Effective SNR mapping) SNR metric...
Multicarrier communication systems with adaptive modulation and coding systems such as ofdm are well suited for high speed and mobility oriented networks like mobile wimax that has to support users in different fading and mobility conditions. The channel estimation and link prediction are worked out at different levels. These estimators and predictors are normally examined using complex emulators...
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