Analysis of the Effect of Vignetting on MIMO Optical Wireless Systems Using Spatial OFDM

Abstract—The performance of pixelated multiple-input multiple output optical wireless communication systems can be impaired by vignetting, which is the gradual fall-off in illumination at the edges of a received image. This paper investigates the effect of vignetting for a pixelated system using spatial orthogonal frequency division multiplexing (OFDM). Our analysis shows that vignetting causes attenuation and intercarrier interference (ICI) in......

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Hard Reset and Soft Reset for Nokia Lumia 930 Lumia 630

NOKIA has shipped a range of new Lumia Phones including Lumia 930 Lumia 620 If you simply want to return phone to factory status, just go to  Settings -> About, and choose Reset Your Phone.  And if your phone is stuck when using some applications like whatsapp the phone may get hang this time use the soft reset expained below SOFT RESET for Lumia 930,(Lumia 900,Lumia 920 Press and hold the volume keys,......

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HOTSPOT Wi-Fi share with Android Devices from Linux Mint 17 Laptops

This is a quick tip to make your laptop as wi-fi hotspot . some people using ap-hotspot which doesnt work for me , so i found this new method which works pretty fine for me Follow the steps 1.Open Terminal 2. run the command $ sudo synaptic   3 in synaptic search for plasma-nm   4. right click on the plasma-nm and mark for installation  5. Afrer installation finished use Alt + f2   kde-nm-connection-editor 6.......

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Edge Detection Technique by Fuzzy Logic CLA and Canny Edge Detector u sing Fuzzy Image Processing

  Download Full paper at IJRITCC   Edge detection in an image is an major issue in image processing.Many hidden objects can be identified using edge detection which gives major clue in identifying actual truth behind the images. In this paper, double thresholding method of edge detection along with canny edge detector is used to identify the small objects in an images.Here threshold plays a major role which extracts......

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