Outage Analysis of Wireless Networks

COOPERATIVE communication

Has attracted a great amount of interest in the past decade. Following certain coordination protocols, a set of nodes can essentially form a distributed multiple-antenna system and transmit signals to the destination in a cooperative manner. Significant performance gains can thereby be achieved by using the available signal processing techniques developed for conventional multiple antenna systems.

                                       
                                                                    Fig: Cooperative Netwok

                                     






In a wireless network of moderate or large size, however, the situation becomes more complicated because there may exist many concurrent transmissions. Since cooperative communication usually involves multiple-node transmissions, it may generate additional spatial interference to other concurrent data transmissions in the network. The aggregate interference power can easily be strong and cause negative impact on the performance of the network. In other words, although each cooperative transmission has the potential to improve the reception quality of its destination, the overall performance taking into account the increased interference level remains unclear






FOR MORE DETAILS
TO COOPERATE OR NOT TO COOPERATE: AN OUTAGE ANALYSIS OF INTERFERENCE-LIMITED WIRELESS NETWORKS