Question: For a Base Station (BS) declared to support only Carrier Aggregation (CA) operation, how should the power of each carrier be set in relation to the rated total output power (Prated,t)?
Option 1: Each carrier's power is set independently to achieve maximum capacity, without regard to Prated,t.
Option 2: The power spectral density of each carrier is set uniquely based on its bandwidth, ensuring the sum equals Prated,t.
Option 3: The power spectral density of each carrier is set to the same level so that the sum of the carrier powers equals the rated total output power (Prated,t).
Option 4: Carriers are prioritized, with primary carriers set to maximum power and secondary carriers adjusted to not exceed Prated,t.
Explanation: In Carrier Aggregation (CA) operation for a Base Station (BS), to efficiently manage power across multiple carriers while adhering to the declared rated total output power (Prated,t), the standard approach is to maintain uniform power spectral density across all carriers. This ensures that the aggregate power does not exceed the rated limit, optimizing resource utilization without compromising compliance. Thus, setting the power spectral density of each carrier to the same level, so their sum equals Prated,t, is the correct methodology for CA operation.