Table 3 Additional system parameters with BC channel
From: Channel direction information probing for multi-antenna cognitive radio system
m∈{X,Y} | PT X or Y under BC channel |
|---|---|
λ p,m | the channel gain from the ST to the PR m |
λ u,m | the channel gain from the PT to the PR m |
μ m | the angle position of the PR m |
ρ m | the target SINR at the PR m |
y bc | the received signal at the ST |
P f,m | the received signal power at the ST for the PR m |
P t,i,m | the transmit power to the PR m under the ith type of |
probing signal | |
P f,i,m | the received power at the ST for the PR m under the ith |
type of probing signal | |
I i,m | the interference at the PR m led by the ST under the ith |
type probing signal | |
Ξ i,m | the hidden feedback information to the ST for the PR m |
under the ith type of probing signal | |
g m | the probing gain via the PR m |
r m | the ratio for the CDIsp with the PR m as in (17) |