Performance evolution of trellis coding in Multiple Input Multiple Output communication systems—A review

In recent years, it has been realized that the Multiple Input Multiple Output (MIMO) communication system is inevitable in accelerating the evolution of high data rate applications. Also the latest research in Information and Communication Technology has told that considerable gains in capacity of wireless communication are feasible in MIMO systems. MIMO with Space Time Trellis Code (STTC) offers both diversity gain and coding gain. This paper discusses the evolutional variants of Space Time Trellis Code developed over a decade. The performance of New Trellis code for STTC, STTC for 4-PSK, Space Frequency Trellis code (SFTC), Space Time Bit Trellis Code, and Silver STTC have been studied and discussed. STTC with Trellis Coded Modulation creates a bandwidth efficient system with coding gain.     

Ionic liquid mediated green synthesis of Ag-Au/Y2O3 nanoparticles using leaves extracts of Justicia adhatoda: Structural characterization and its biological applications

In the present work, a facile synthesis was applied for the silver-gold decorated yttrium oxide nanoparticles with the use of Justicia adhatoda (leaves extract) and [BMIM] PF₆ (Ionic liquid) as a capping/stabilizing agent. The XRD analysis showed that Ag-Au/Y₂O₃ nanoparticles have a face-center cubic structure and crystallite size of 30 nm. The Y-O stretching bands were observed in the FT-IR spectrum at 464 to 495 cm^?1. The band gap of the silver-gold decorated Y₂O₃ nanoparticles was estimated as 5.75 eV from the UV-DRS spectrum. In the SEM and TEM images, the morphology of silver-gold/Y₂O₃ nanoparticles shows a nanoflake-like structure. The presence of silver, gold, yttrium and oxygen of elements has been confirmed by the EDX spectrum. The antibacterial activity of the nanoparticles was evaluated for the Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative) bacteria. The anticancer activity was also studied by the human cervical cancer cell line. The silver-gold decorated yttrium oxide nanoparticles revealed an exceptional microbicidal and antitumor activity when compared with yttrium oxide, silver decorated yttrium oxide and gold decorated yttrium oxide.     

High performing Zn-embedded Ni9S8 nanosphere electrodes for Pseudo-supercapacitors

Journal of Materials Science: Materials in Electronics - Highly electroactive Zn-embedded Ni9S8 nanosphere and its ZnS/NixS6-based nanocomposites were prepared by a simple hydrothermal route. The...     

Factors influencing primary productivity in Panshet and Ujjani Reservoirs, India

Nitrogen and phosphorus concentrations and their ratios are important factors influencing the primary productivity of a reservoir. Based on analyses of Panshet and Ujjani Reservoirs in Maharashtra, India, it was observed that, in addition to their nitrogen and phosphorus concentrations and ratios and other chemical constituents, physiographical factors such as geography, catchment land use, water basin morphology, bathymetry and changing water levels or flushing rates also influenced the productivity of these two reservoirs.     

Performance Evaluation of Interference Mitigation Scheme with D2D Users in Wireless Networks

Wireless Personal Communications - The increasing data traffic paved the way for new efficient spectrum utilisation technologies. The existing communication techniques could not cope with the...