Question: In 3GPP-compliant FDD systems, how is the total transmit power spectral density (Ior) of OCNS managed during downlink physical channel transmission?
Option 1: By dynamically adjusting the transmission power of all downlink physical channels in real-time.
Option 2: By maintaining a constant mean power from one slot to the next, potentially using continuous dummy DCCH data transmission.
Option 3: Through periodic shutdown of non-essential physical channels to compensate for OCNS power fluctuations.
Option 4: By implementing a feedback loop that adjusts Ior based on UE reported signal strength.
Explanation: To ensure consistent transmission conditions, the total transmit power spectral density (Ior) of OCNS must be kept constant. This is achieved by maintaining a constant mean power across slots. Utilizing continuous dummy DCCH data allows for this consistency without needing to constantly calculate and adjust OCNS power, thus simplifying the process while adhering to the requirement for constant Ior.