According to the decoding strategy, the other two "wanted" packets must not be encoded into the new one, that is, both have false assignment while is true.
The first step includes the adaptive selection of the decoding strategy at the secondary receiver which is either treating interference as noise or performing successive interference cancelation or superposition coding.
Under the same time slots, transmission power and processing of the codewords at the relay terminal with the decode and forward strategy, the proposed codes achieve a 1.9-dB1.9-dBover the repetition coding scheme-based QC-LDPC codes in [9] for the position of the relay d=0.4 at a BER of 10−4.
The authors prove that the sum-rate point on the capacity region is a Nash equilibrium when the decoding strategy of the receiver is not known to the transmitters.
Regarding secondary transmission, the decoding strategy and the power allocation is performed by the secondary BS based on the channel gains and on the transmit power of the previous iteration (n−1).
The data rate (hat {R}^{k}_{{u_{[k]}}}) is obtained depending on the decoding strategy applied in the subcarrier and by taking into account the power limitation due to the interference threshold.
At the n-th iteration, a test is done in order to define the decoding strategy used at the secondary receiver.
Using the same time slots, transmission power, and processing of the codewords in the relay terminal with the decode and forward strategy as in [9], the codes proposed here achieve up to 1.9-dB1.9-dBover the QC-LDPC codes depending on the location of the relay with respect to the source and the destination.
In addition, some theoretical analyses of the encoding and the decoding strategies in the MultiRank.ED algorithm are provided.
We propose a resource allocation algorithm for the multiuser system, in which the decoding strategies at the secondary receivers are defined and the power allocation is optimized in order to improve the sum rate of the system with perfect CSI.
If this estimated rate is greater than the exact capacity calculated according to the true decoding strategy and the exact allocated power, the SU is in outage within the corresponding subcarrier and its rate is set to zero.
