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3GPP Third Generation Partnership Project
AAS Adaptive Antenna System
ACK Acknowledgement (in ARQ...
Sunday, 18 March 2012
Thursday, 8 March 2012
Constellation diagram interpretation
Tag
Modulation
The constellation diagram provides graphical representation of the complex envelope of each possible symbol state.
The X-axis of the diagram is called in-phase component and the y-axis represents the quadrature component.
The distance between signals on constellation diagram relates to how different the modulation waveforms are and how well the receiver can differentiate between all possible symbols when random noise is present.
...
Tuesday, 6 March 2012
Digital Modulation techniques
Tag
Modulation
What Is The Modulation?
Modulation is the process of encoding information from a message source in a manner suitable for transmission.
It is generally involves translating a baseband message signal (called the source) to a bandpass signal at frequencies that are very high when compared to the base band frequency.
The bandpass signal is called the modulated signal, and the baseband message signal is called the...
Monday, 5 March 2012
Long Term Evolution (LTE)introduction
Tag
LTE
Long Term Evolution (LTE) is a 4G wireless broadband technology developed by the Third Generation Partnership Project (3GPP), an industry trade group.
3GPP engineers named the technology "Long Term Evolution" because it represents the next step (4G) in a progression from GSM, a 2G standard, to UMTS, the 3G technologies based upon GSM.
LTE provides significantly...
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