Sentence examples for common pilot channel from inspiring English sources
Therefore, the geometry factor can be provided by UE-side measurement of the downlink common pilot channel [14].
where P Tx_SU is the initial SU transmit power, P Tx_C is the predetermined transmitted power of the common pilot channel, P Rx_C is the measured power of the common pilot channel at the SU receiver, L A is the additional gain, loss, and tolerances, S R is the required SINR, and P Rx_SU_I is the interfering power.
Having received the access granted message, the UE tries to catch the common pilot signal which comes from the eNB though a forward link common pilot channel (F-CPCH).
For example in UMTS, RSS values correspond to the common pilot channel (CPICH) received signal code power (RSCP) [19], meanwhile in LTE/LTE-A, the equivalent measurement is the reference signal received power (RSRP) [20].
In cellular networks, an MS measures received signal code power on a common pilot channel (CPICH) in Universal Mobile Telecommunications System UMTS and RSSSS on a broadcast control channel (BCCH) in GSM systems to determine the received signal level.
Legacy HSDPA terminals are equipped with one receive antenna and they can estimate channels of two different BS antennas from primary common pilot channels (P-CPICHs) and define the beamforming feedback that is then sent to the BS through a dedicated feedback channel.
Although this approach is highly suboptimal, it is very simple to implement, and its performance can be encouraging especially in UMTS cellular networks [28] where, due to downlink omnidirectional strong common pilot channels, the overall leakage power appears to be almost white noise.
Here, dedicated pilots allow per-cluster beamforming since channel estimation is performed per-cluster, whereas for common pilots channel estimation across the whole band is allowed.
Note that this concept based on coarse synchronization also enables to estimate user channels based on common pilot-based channel estimation techniques.
Finally, note that if the CFOs are kept small, the signal degradation from ICI is limited, and thus common pilot-based channel estimation techniques can still be used to obtain channel estimates of sufficient quality.
