Abstract
The second paragraph in Sect. 5 should read as follows: The fixation of interferer set does not impact the rationality of our analysis. Outage performance is shown in Fig. 2 with transmission power varying from 0 to 40 dB, to verify the effectiveness of analytic bounds. Lower and upper bounds of outage are separately displayed for c = 4 and c = 1/4 cases, representing dedicated relay station and user cooperation scenarios, respectively. For the 2TS and 3TS 2-hop schemes, we plot exact bounds as well as asymptotic lines, and they are shown to converge well from medium SINR regime, i.e., about PS = 15 dB for the large c case, and 20 dB for the small c case, in which the relay power is relatively low, and the asymptotic regime starts at a high point of power as a result. Diversity gain obtained from MRC in 3TS scheme is also revealed since the outage bounds decline with a greater slope. Only the asymptotic solutions are provided for the 3TS MRC scheme.
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