Evaluation of Multi Dual-Hop and Cooperative Relay Networks using MGF Based Analysis

Comparative performance analysis of cooperative and multi dual‐hop relay networks using MGF approach

“…Figure 4 shows the ASER versus E s /N 0 results for both cooperative diversity network cases ω = 2, when MRC receive diversity technique is applied at the destination. In multi dual-hop network for J = 1 and E s /N 0 = 21 dB, the simulated and analytical values of ASER are 7.381 × 10 −2 and 6.277 × 10 −2 , respectively, and for J = 3, these values are 6.397 × 10 −3 and 3.232 × 10 −3 . However, while comparing it with cooperative network relay node J = 3 for same E s /N 0 , the simulated and analytical values of ASER are 2.5 × 10 −4 and 1.501 × 10 −4 , respectively.…”

“…In order to select the BRs among several relay nodes in both cases, max-min method in (A1) is used. The total SNR in the simulation is obtained by using upper bound approximation in (6). In Table 1, the detailed parameters used in the simulation are summarized.…”

“…In cooperative diversity, the transmitted signal from the source and forwarded signals from the relay nodes are combined at the destination node in such a manner that receive diversity is generated. 6 The maximal ratio combing (MRC), selection combining (SC), and equal gain combining (EGC), and so forth are generally considered as diversity combining techniques to accomplish low bit error rate, high signal-to-noise ratio (SNR), and enhanced signal quality at the receiver end. Soliman 7 addresses potential solutions to the problem of fading with respect to MRC and SC with varying number of relay nodes in the dual-hop relay network.…”

“…However, they just considered a multi dual-hop network without BRs technique over various fading channels. It is noted that all of these studies [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] are based either on cooperative or multi dual-hop relay network with best relay selection (BRs) or without it for analyzing the performance. To the best of our knowledge, no one has comparatively evaluated the performance of both cooperative and multi dual-hop relay networks considering the various receive diversity technique, that is, SC and MRC at destination node with BRs over Weibull fading channel, and this motivates our work.…”