Exact(19)
This discrepancy can cause extra interference to the primary devices.
In addition, interference cancellation is implemented at the femtocells as an extra interference mitigation measure.
However, this adjustment of power will generate extra interference to other SUs.
The results show that by increasing performance of the FUs, the MU suffers extra interference which limits its performance.
The so-called secrecy capacity can be improved using friendly jammers that introduce extra interference to the eavesdroppers.
Comparing (35) with (23), nonperfect antenna alignment will degrade system performance because it generates extra interference terms and decreases the power of desired received signal.
Similar(41)
As observed from previous simulations, channel estimation is severely degraded by the extra data interference.
This result is unexpected since the estimation errors is affected by the extra data interference.
A more attractive problem formulation which always guarantees feasibility is based on SINR balancing with extra PU interference leakage constraints.
Step 2. Using the detected data symbols from Step 1, we mitigate the extra data interference from (35).
To further enhance the performance of channel estimation while preserving computational complexity, we provide a low-complexity DF scheme to cancel the extra data interference to channel estimation.
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