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Capacity analysis and Power Control mechanism in CDMA system

The limitation to the development of wireless personal communication is due to limited electromagnetic spectrum, limitation in the technology required for storing electrical energy within a very small size, and a few other factors. With frequency limitation being the dominant one, mobile radio communication is therefore possible only within a relatively narrow frequency band. Since the spectrum is a finite natural resource, one of the most important targets of radio system design is to maximize its efficiency. This means maximum information has to flow through a communication system/channel for a given amount of RF spectrum within a given area.

The project deals with the Power control of CDMA system which increases spectral efficiency of RF channel. In this report a power control techniques for CDMA system, TPC is presented. Power control is one of the most important system requirements for effective functioning of CDMA systems. In the absence of power control scheme, problems such as the near-far effect will start to dominate and consequently the capacity of the CDMA system suffers. Therefore, when an effective power control mechanism in CDMA systems is applied, it allows the users to share resources of the system equally among themselves, and thereby leading to increased capacity.


  •     Jitendra Raj Thapa
  •     Lalit Raj Bhatta
 

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