Articles published in IJEER

Cyclostationary Detection Using DVB-T Signal in a Cognitive Radio System

Due to fixed available spectrum and increase in wireless applications it is necessary to use a technology which can detect the unused spectrum so that spectrum efficiency can be improved. The device which is used known as cognitive radio (CR). Cognitive radio is an intelligent device which can easily sense the available channel in an available spectrum, for spectrum sensing it basically uses three techniques Energy Detection, Matched Filter Detection and Cyclostationary Detection. In this paper spectrum detection is done by using Cyclostationary detection which provide better results at low SNR in comparison to other techniques, DVB-T signal is used for finding Cyclostationary spectrum and detection of primary signal at different SNR values.

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E-Waste Causes and Management Using BASEL Convention

E-waste" is a popular, informal name for electronic products nearing the end of their "useful life. “Electronic waste" may be defined as discarded computers, office electronic equipment, entertainment device electronics, mobile phones, television sets, and refrigerators. "E-wastes are considered dangerous; ascertain components of some electronic products contain materials that are hazardous, depending on their condition and density. This includes used electronics which are destined for reuse, resale, salvage, recycling, or disposal. Others are re-usable (working and repairable electronics) and secondary scrap (copper, steel, plastic, etc.) to be "commodities", and reserve the term "waste" for residue or material which is dumped by the buyer rather than recycled, including residue from reuse and recycling operations. Many of these products can be reused, refurbished, or recycled in an environmentally sound manner so that they are less harmful to the ecosystem. This paper highlights the hazards of e-wastes, the need for its appropriate management and options that can be implemented.

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