Constellation Reports Samples For Students

Lab reports on Quadrature amplitude modulation and Demodulation

Introduction
Quadrature amplitude modulated is an electro-magnetic wave signal that employs two Quadrature signal carriers cos 2pfct, sin 2pfct, of which each of the signal carriers are modulated by an independent sequence of information bits. The transmitted signal assumes a wave form of this nature.

the values Amc and Amg are the two sets of amplitude that need to modulated.
QAM can be viewed as a form of combined amplitude digital phase modulation and digital amplitude. The resultant transmitted QAM signal is a cosine wave which is expressed as shown below.
umn(t) = AmgT (t) cos(2pfct + øn); m = ...

(QAM) Laboratory Report

For (XXX)

Objective:
Components required:
A carrier source, data source, phase shifter, multiplier, symbol mapping, noise channel, PCB board, phase scope and oscilloscope.
Theory:
There are two types of modulation technique namely analog and digital. QAM is a technique that uses both analog and digital modulation technique. It is the abbreviation used for Quadrature amplitude modulation.
In analog modulation scheme it passes the two message signals by varying the amplitude of the two carrier waves using amplitude modulation method. In the case of digital modulation technique two digital bit streams are transferred in which ...

Star schema (simple)

“Star” schema is actually the simplest architecture within data warehousing. This architecture is termed as star because of the diagram that looks like a star. In the center of this diagram, there is a “fact” table that links to the “dimension” tables. Star schema is the most common data warehousing schema that is used. Oracle recommends it to be used. Star schema is a widely supported business intelligence tool. This architecture is very useful since you can create some useful queries and in addition it is very easy to do since not many tables need to be joined (Wang 2006). Another advantage ...