Assuming that the same waveform (including training and/or preamble sequences) is employed at the three transmitters, we then distinguish two different cases with respect to synchronization: All users are perfectly synchronized in time and frequency.
All users are perfectly synchronized in time and frequency.
In order to selectively jam the PRBs assigned to, for example, the RACH channel, an attacker should be perfectly synchronized in time and frequency with the LTE signal.
Nodes are assumed to be synchronized in time and frequency and equipped with 4×4 MIMO transceivers with interference rejection combining (IRC) capability [31].
The exploitation of diversity could only be possible if all the sectors of different BSs are strongly synchronized in time and frequency.
We consider two users, user equipment (UE) 1 and UE 2. The first user occupies three RBs and is assumed to be perfectly synchronized in time and frequency domains with its serving base station.
The central region (FC1, Cz) of the model's brain and the parieto-occipital brain region (P8, PO2, PO10) of the imitator were synchronized in the beta frequency band (see Figure 2B; with CS = +6.4, p<0.05).
These pairs of regions appear to have been synchronized in the theta frequency band (blue colored squares) during nearly the entire experiment for nearly all noise conditions (see Figure S2).
Both baseband hardware and RF front-ends of the transmit nodes are synchronized in time and in frequency by means of two mechanisms: Transmit nodes implement a hardware trigger attached to the real-time buffers and to the DACs and ADCs.
