Introduction to OFDM – orthogonal Frequency division multiplexing
In modulations, information is mapped on to changes in frequency, phase or amplitude (or a combination of them) of a carrier signal. Multiplexing deals with allocation/accommodation of users in a given...
View ArticleIntroduction to OFDM – orthogonal Frequency division multiplexing – part 2
Article moved to new pages The article has been consolidated into these following pages. Please refer these links. If you are looking for Matlab code refer this ebook : Simulation of Digital...
View ArticleIntroduction to OFDM – orthogonal Frequency division multiplexing – part 3
In the previous article, the architecture of an OFDM transmitter was described using sinusoidal components. Generally, an OFDM signal can be represented as s(t) = symbols mapped to chosen constellation...
View ArticleIntroduction to OFDM – orthogonal Frequency division multiplexing – part 4 –...
Consider a non-ideal channel h(t)≠δ(t), that causes delay dispersion. Delay dispersion manifests itself as Inter Symbol Interference (ISI)on each subcarrier channel due to pulse overlapping. It will...
View ArticleSimulation of OFDM system in Matlab – BER Vs Eb/N0 for OFDM in AWGN channel
To simulate an OFDM system, following design parameters are essential. Lets consider the OFDM system parameters as defined in IEEE 802.11[1] specifications Given parameters in the spec: N=64; %FFT size...
View ArticleBreaking the Bandwidth Barrier – Li-Fi turns LED bulbs into High Speed...
Researchers, working on Ultra-Parallel Visible Light Communications (UP-VLC) project, have demonstrated 3.5Gpbs free space data transmission via three separate micro-LEDs that emit red, blue and green...
View ArticleOFDM and Cyclic Prefix – a handson demonstration using Matlab
This tutorial is a part of the website http://www.gaussianwaves.com and created under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. You must credit the author in your...
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