How power control is performed in the uplink scenario?
Depending on the goal of the power control mechanism, the uplink power-control algorithm can be based on signal-to-noise ratio (SNR), signal-to-interference plus noise ratio (SINR), or Internet of things (IoT). The goal of an SNR-based algorithm is to maintain the desired received signal strength in the BS.
What is transmit power of antenna?
In radio transmission, transmitter power output (TPO) is the actual amount of power (in watts) of radio frequency (RF) energy that a transmitter produces at its output. The radio antenna’s design “focuses” the signal toward the horizon, creating gain and increasing the ERP.
Does power control used in LTE DL Pdsch?
Downlink Rate Control (Power Control) In case of 4G LTE Downlink , rather than varying power in the Downlink, full power is distributed uniformly over the whole bandwidth. The same Power Spectral Density (PSD) is used on all DL channels. For example, PDSCH, PHICH, PDCCH etc.
Why is power control needed in case of LTE?
In wireless communications, one of the main challenge is to adapt the transmitting signal to overcome the variations of the wireless channel. In order to overcome the variations and channel response between the transmitter (BS) and the receiver (user). …
What does transmit power mean?
Defining Transmit Power. The transmit power of an access point radio is proportional to its effective range. The higher the transmit power, the farther a signal can travel, and the more obstructions it can effectively penetrate.
How does power control work in LTE uplink?
It cannot transmit more than its maximum UE power which is commonly 23 dBm for most LTE UEs in the Uplink. The objective of the eNOdeB is that UE should transmit only enough power in the uplink in a range which is the minimum required amount. Neither more, nor less than that.
Which is the highest rate of uplink transmission?
Together with rate control, this implies that the highest data rate is achieved for a given transmit power or, in other words, for a given interference to other cells, the highest link utilization is achieved.
What’s the maximum power a UE can transmit?
P CMAX_H = higher end of the maximum power UE is allowed to transmit. in this case UE would be permitted to define its maximum output power using a value between 23 and 21 dBm. (Note: If you have specific questions on P_CMAX_L and P_CMAX_H .
What does uplink and downlink mean on a cell phone?
Uplink (also referred to as upload) and downlink (also referred to as download) describe the two-way interaction between your phone and other cellular devices, and a cell tower. Uplink refers to the signal leaving your device and returning to the cell tower, while downlink refers to the signal coming to your device from the cell tower.