As a result, the destination gives higher weight to the signal forwarded by the relay.
Each relay aids the signal forwarding of only one TX RX pair.
Judiciously designed signal forwarding at the relay and an accurate detection at the destination can greatly enhance the system performance.
Wireless network coding (NC), which mixes the data from different sessions before signal forwarding to increase per-transmission information content, has been a promising approach [8,9].
More specially, we pay attention to the design of the optimal multicast signal forwarding matrix at the multi-antenna cognitive relay.
We focus at the design of the optimal signal forwarding matrix at the cognitive relay in both centralized relay mode (CRM) and distributed relay mode (DRM).
The signal forwarded by ST at the time instant m can be represented by {tilde{x}}_c(m)=sqrt{beta^{hboxleft {tilde{x}}_{c1}left m-1right)+{x}_s(m)right), (8 where β′ is the amplification gain of ST in the FD transmission mode.
Under the DRP, the signal forwarded by the i th relay to the destination is given by y ~ r i = 1 L h r i d ∗ | h r i d | 2 x r i, i = 1, 2, …, L (4).
Feed-forward implies that neurons in continuous layers send their output (signals) forward and only forward connections exist [23].
Besides AF relay scheme, a detect-and-relay (DR) scheme has been proposed [66], where only the relay SUs that detect the present of the PU signals forward the received signals to the SU transmitter.
The willingness of teachers, and their leaders, to place empathy at the top of the priority list for students signals forward movement in the way students are educated in America.
