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EXISTING SYSTEM

PROPOSED SYSTEM

EXISTING CONCEPT:

         Existing literature focuses only on the local beneficial effect of cooperative communications and neglects its possible drawbacks.

        In cooperative communication systems with one source destination pair are investigated using stochastic geometry. Cooperative communication usually involves multiple-node transmissions, it may generate additional spatial interference to other concurrent data transmissions in the network.

PROPOSED CONCEPT:

     Optimal centralized algorithms and suboptimal distributed algorithms have been proposed to achieve excellent performance

     We show that a lower outage probability is achieved by the non-cooperative strategy if and only if the extra interference caused by the cooperation is larger than a threshold determined by the path loss exponent.

TECHNIQUE

       Stochastic geometry technique is used.

TECHNIQUE

      Non-Cooperative Strategy.

     Cooperative Strategy.

TECHNIQUE DEFINITION:

        Stochastic geometry is the study of random spatial patterns. At the heart of the subject lies the study of random point patterns.

TECHNIQUE DEFINITION:

       Cooperation among network nodes provides transmit diversity in cases where wireless transmitters, due to size and power limitation, cannot support multiple antennas.

DRAWBACKS

·         Focuses only on the local beneficial effect of cooperative communications and neglects its possible drawbacks.

·         Assume that the network is interference-free, which is clearly an idealized version of the problem.

ADVANTAGES

·         The success probability of a non-cooperative strategy decreases more slowly than the cooperative one

         The cooperative strategy outperforms the non-cooperative one if the number of interferers is relatively small.