Hardware implementation of Zero-force Pre- coded MIMO OFDM system to reduce BER

ABSTRACT: Achieving high data rates in wireless transmission is in demand and has become a competitive factor in current fast moving world. Generally Multiple-Input-Multiple-Output systems are used to achieve high data rates. In MIMO every user may experience inter-user-interference because data of two or more users is transmitted from transmitter over a same channel. To mitigate this inter-user-interference a zero-force pre-coding is used at the transmitter, where data is coded and transmitted through channel (MIMO), so that data received at receiver has less Bit Error Rate (BER). Various efforts are made to simulate zero-force pre-coding algorithm for performance, in this work zero-force pre-coding technique with OFDM transmitter and receiver is implemented in HDL and this Zero-force precoded MIMO-OFDM system is simulated using Xilinx 13.4 and MATLAB R2013. BER is calculated for different values of SNR and this BER is compared with MIMO OFDM channel without pre-coding. More over this zero-force pre-coded MIMO OFDM system is synthesized for synthesis report

Clinico-microbiological study of dermatophytosis in a tertiary-care hospital in North Karnataka

Context: The dermatophytoses constitute a group of superficial fungal infections of keratinized tissues, namely, the epidermis, hair, and nails. The distribution and frequency of dermatophytosis and their etiologic agents vary according to the geographic region studied, the socio-economic level of the population, the time of study, the climatic variations, the presence of domestic animals, and age. Aims: The present study was undertaken to assess the clinical profile of dermatophytic infections and to identify the causative fungal species in the various clinical presentations. Settings and Design: This was a hospital-based observational study. Materials and Methods: One hundred and fifty clinically suspected cases of dermatophytosis attending the outpatient department of a tertiary care hospital were included in the study. History was taken, general physical and cutaneous examination was done and details of skin lesions noted. Direct microscopy in 10% KOH (40% KOH for nail) and fungal culture on SDA with 0.05% chloramphenicol and 0.5% cycloheximide was done in every case. Statistical Analysis Used: Statistical analysis was done using SPSS 17.0 software. Chi-square test and contingency coefficient test were used as significant tests for analysis. Results: Out of 150 patients studied, majority belonged to the age group of 21–30 years (22.7%). Male-to-female ratio was 1.63:1. Tinea corporis (24.7%) was the most common clinical type observed. The overall positivity by culture was 40% and by direct microscopy was 59.3%. Trichophyton mentagrophytes was the predominant species isolated (48.3%). Conclusions: The present study reveals the changing trend in the prevalence of dermatophyte species in this part of Karnataka

Orofacial rehabilitation of patients with post-cancer treatment-An overview and report of three cases

According to World Health Organisation statistics, individuals of the Indian subcontinent have the highest prevalence of orofacial cancer. Surgery, radiation, chemotherapy or combination therapies are commonly administered treatment modalities for treatment of oral cancer. Surgical resection can be mutilating, disfiguring and may deeply affect self-image of patients. Orofacial defects have unique limitations and challenges. A coordinated effort from the surgeon, oral physician and the maxillofacial prosthodontist to treat such patients is the need of the hour. This article presents an overview of the orofacial rehabilitation of postcancer treatments along with case reports

Orofacial rehabilitation of patients with post-cancer treatment-An overview and report of three cases

According to World Health Organisation statistics, individuals of the Indian subcontinent have the highest prevalence of orofacial cancer. Surgery, radiation, chemotherapy or combination therapies are commonly administered treatment modalities for treatment of oral cancer. Surgical resection can be mutilating, disfiguring and may deeply affect self-image of patients. Orofacial defects have unique limitations and challenges. A coordinated effort from the surgeon, oral physician and the maxillofacial prosthodontist to treat such patients is the need of the hour. This article presents an overview of the orofacial rehabilitation of postcancer treatments along with case reports