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Then, the per-subcarrier resource allocation is implemented from the subcarrier 1 to N. Finally, the subcarrier assignment, relay selection indicator variables are calculated and the minimum power consumption is achieved.
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In this section, we compare the proposed weighted fair opportunistic scheduling with the Round Robin (RR), MaxSNR, PF, and MAOPF schemes implemented with subcarrier by subcarrier allocation.
The Project was implemented from May 2011 to October 20133.
The different channel gains can be determined from the subcarrier allocation step as follows: (17).
We solve this OP by (i) simplifying the QoS constraints from medium access control-layer to physical-layer based on a cross-layer approximation; and (ii) using the Lagrangian duality based technique to solve the simplified OP, and iterative water-filling is implemented to find the optimal power and subcarrier allocation.
Whereas in [10, 11] the authors propose to implement a per-subcarrier decision-feedback equalizer (DFE).
Here, following the main idea of [13], we implement ML by optimal subcarrier grouping.
Such performance improvements of "Adaptive" are achieved because the subcarrier-wise rate adaptation is implemented with the method proposed in this paper.
In the receiving side, the reference sequence retrieved from the predefined subcarrier and the signal retrieved from each of the remaining subcarriers are correlated with the delayed version of the other ones to recover the corresponding bit sub-sequence pair.
The utility function of each subcarrier is designed based on the profit of the user who achieves the subcarrier and from the system optimization point of view.
The subcarrier indices from the 85th to 87th are assumed to be the interference tones.
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