Joanne Gomes

Learn More
Systemic lupus erythematosus (SLE) affects predominantly women at reproductive age but may present at any age. Age at disease onset has a modulating effect on presentation and course of disease, but controversies persist regarding its impact on long-term outcome. Our aims were to characterize clinical features, co-morbidities and cumulative damage in(More)
This paper analyses the performance of Hermite orthogonal pulses with Time-Hopping modulation techniques such as TH-PPM TH-BPSK and TH-PSM for Ultra wideband (UWB) communication using UWB S-V Channel-I. It compares the Bit Error Rate (BER) results of modulation techniques obtained with Gaussian pulse, with that of Hermite pulses and proves that Hermite(More)
This paper introduces a novel binary, long double error correcting, systematic code (8 2 5) that can detect and correct errors up to two bits in the received vector using simple concept of syndrome decoding. The motivation behind the construction of this code is the idea to achieve 100% error correction on the receiver side and to use the encoder/decoder(More)
This paper is concerned with error performance analysis of multidimensional orthogonal modulation technique using Hermite pulses over UWB S-V channel model. Multidimensional modulation technique uses N number of orthogonal shapes to transmit N information bits simultaneously in one bit interval. This improves the data transmission rate and hence is useful(More)
The paper presents Ultra-Wideband system model as a point to point wireless-USB link in the home network for high speed transmission of gray scale video. Objective of High speed video data transmission is achieved by using multidimensional Hermite pulse shape modulation (2d–5d) at the transmitter. The proposed UWB system is cost effective as it uses(More)
Accommodating many users in a small area is a major issue in the communication system. Frequency spectrum sharing and time sharing are used in the conventional systems. Hence, they have limitation on the capacity of the system. With the advent of spread spectrum, many users can be accommodated within the fixed bandwidth by making use of certain coding(More)
Using Ultra wideband technique for short distance wireless communication in home networking requires cost effective technical solutions with high quality. The objective of this paper is to provide a low cost, short distance (< 10m), point to point, high speed wireless link using a single user UWB system with 2-dimensional hermite based pulse shape(More)
In the previous correspondence we introduced a binary double error correcting long code (8 2 5), for 100% data correction. This paper evaluates the BER performance of UWB system using (8 2 5) code over UWB (SV) channel for image transmission. The simulation results presented here uses BPSK, as well as 2dimensional Hermite pulse modulation. Image to be(More)
In multiuser environments, multi access interference (MAI) is occurred in UWB System.To overcome above problems Multiuser Detection Schemes (MUD) are used in wireless UWB System. Channel coding is another technique to reduce the multiuser access interference (MAI). One such code is LPDC codes for robust image transmission . Proposed system employs channel(More)