An echo may be present or absent; the time delay between the primary signal and the echo can also vary.
H0 represents the absence of primary signal, while H1 represents the presence of primary signal.
Let the primary signal be with amplitude A and phase.
Then, the primary signal is decoded and superimposed at the ST, while the primary signal is decoded at the Relay.
"We are built on the place signal, instead of the keyword as the primary signal," says CEO Rob Reed.
This constraint should be applied to any primary signal (i) regardless of the arrival time of the primary signal and (ii) regardless of whether the appearance time of the primary signal is longer than the RDT or not.
Table 1 Hypothesis test Primary signal absent (H0) Primary signal present (H1) H0 is accepted Correct decision Misdetection H0 is rejected False Alarm Correct decision.
As can be seen in Figure 2, the secondary transmitter (ST) cannot sense the primary signal because it is not within the primary signal detection range.
If the SR decodes the primary signal successfully, the primary signal will be removed as an interfering signal, and the secondary signal will be restored.
It decodes the first part treating both the primary signal and the second part as noise, decodes and cancels the primary signal, and then decodes the second part.
"It appears that the primary signal [for hypertrophy] is this decrease in contractility".
