In this paper, the symbol transmission rate is set to be sr = 250,000 symbol/s.
Moreover, it is observed that the outage probability values for both the fixed-gain and variable-gain AF-FD systems are higher than 5×10−1, even for the high SNR values, e.g., ({P_{S}}/sigma _{D}^{2} = 30) dB, when Ω LI is set to Ω SR =Ω RD =1.
In other words, if the maximum search range is set to SR/8, it will most likely cover about 97% of all motion vectors.
The distance between ST and SR is set to be half of the distance between ST and PR.
The number of hops per region (SR) is set to 4. It should be remarked that the routing device selected, a MicaZ, is operating all the time, that is, retransmitting messages and that each node is powered by two lithium AA batteries with a capacity of 3000 mA/h each (Energizer-L91).
The distances between the STs and the PR are fixed to be 300 m, and the distances between the STs and their corresponding SRs are set to be 200 m.
The parameters r of MCL and (r, b) of R-MCL are set to the same values as SR-MCL.
Finally, this value for SR-NSAF was set to 0.32 and for MSR-NSAF, the step-size was set to 0.4.
The parameters (r, b, t, β, p) of SR-MCL were set to default values (2.0, 0.5, 30, 1.25, 0.6), respectively, in all experiments unless otherwise noted.
The value of parameter Q for the SR strategy has been set to 50% (e.g. half the private resources) for every scenario considered.
Otherwise, the powers ({widehat P_{S1_{(i)}}}) and ({widehat P_{text {SR}_{i}}}) should be set to zero, and the secondary transmission is not available.
