Resource Allocation for Two-relay Networks with Mixed Relaying Protocol in Line Topology

Woong Cho
2017 International Journal of Control and Automation  
Relay nodes can be used for extending communication coverage or enhancing system performance by relaying the received signal to another node or providing cooperative diversity gain, respectively. In this paper, we analyze the effect of resource allocation in two-relay networks with mixed relaying protocol. We assume that two relay nodes exist between the source node and destination node, and one relay node adopts decode-andforward (DF) relaying protocol and the other one uses
more » ... amplify-and-forward (AF) relaying protocol. Differential modulation scheme is applied for all cases to bypass channel estimation. First, we compare the performance of proposed system with the systems only using DF protocol and AF protocol. Then, we investigate the performance of the proposed system by considering the location of relay nodes, i.e., co-located and various location scenarios, depending on the existence of direct link. Finally, the effect of both energy and location in the overall performance is analyzed by assuming that two node are co-located. system is investigated depending on existence of direct link. The performance of the system is evaluated using symbol error rate (SER).
doi:10.14257/ijca.2017.10.4.16 fatcat:vimuckqzmrhdbn3xxiumhudfwu