# Author: behindthesciences

## Discontinuous transmission for energy efficiency in 5G

1. Introduction   Energy efficiency is one of the main goals for the next mobile network generation. As we mentioned in previous posts, theeNodeBs are the elements in the

## Introduction to GSM – Part 1

Before attempting to understand how 4G and 5G networks are made up, it is important to have a comprehensive understanding of GSM. GSM is an acronym that stands

## Cyclic Prefix in a 16QAM system

If you want to do a full study of this technique, we would definitely suggest to download and “play” with our Matlab implementation: https://uk.mathworks.com/matlabcentral/fileexchange/55995-cyclic-prefix-in-16qam-system-with-single-path-rayleigh The Cyclic Prefix technique commonly

DSSS is one of the methods widely used in code division multiplexing access (CDMA) systems such as IS-95 standard, or the more recent ones: UMTS and EVDO, all

## 5G: Green Radio Access Network

Nowadays is difficult to imagine our lives without mobile communications. We are replacing the use of desktop computers by mobile phones and tablets that perform the main applications

## BPSK, QPSK and 16QAM DSSS Tx and Rx with multipath channel

In previous posts we saw the properties of DSSS signals and the rake receiver implementation for a 16QAM system. We have upload the following files to Mathworks: http://www.mathworks.com/matlabcentral/fileexchange/55810-direct-sequence-spread-spectrum–dsss–for-bpsk–qpsk-and-16qam-modulations BPSK

## Channel models suitable for studying DSSS

The typical channels that model the multipath behaviour of the wireless link are either a combination of the exponential channel model, or the Rayleigh channel model, together with AWGN

Comments added thanks to William Buller, from Michigan Technological University In this post we are going to review the main characteristics of radar signals and we are going

## Fourier Transform Matlab Tutorial

Following our last post about the FT Theory, now we will practice in Matlab with code exercises and solutions. The first thing you need to do is to

## Fourier Transform Theory

In this post we are going to see the theory behind the Fourier Transform in an understandable way so you can be ready to practice with our next

## Frequency Modulation (FM) Matlab Tutorial.- Part 1

In this post we are going to review some basic concepts about Frequency Modulation (FM) to set the basis for our next post, which will be a Matlab tutorial,

## Frequency Modulation (FM) Matlab Tutorial.- Part 2

In this post we are going to apply what we learnt about the FM signal’s properties in our last post. We will do some exercises in Matlab by

## Periodic Signals Tutorial

In this post, we are going to see a practical study of periodic signals in Matlab. We are going to post the code and the results here so