Question: What initializes the pseudo-random sequence generator for reference-signal sequence generation in a UE at the start of each OFDM symbol?
Option 1: Slot number within a radio frame, OFDM symbol number within a slot, and the higher-layer parameter scramblingID or sequenceGenerationConfig.
Option 2: Only the higher-layer parameter scramblingID or sequenceGenerationConfig.
Option 3: Solely the slot number within a radio frame and OFDM symbol number within a slot.
Option 4: A fixed value defined in the UE's hardware configuration.
Explanation: This is correct because, according to the specifications, the pseudo-random sequence generator for generating reference-signal sequences in a User Equipment (UE) is initialized with a combination of parameters at the start of each Orthogonal Frequency Division Multiplexing (OFDM) symbol. These parameters include the slot number within a radio frame (`n_s`), the OFDM symbol number within a slot (`l`), and either the higher-layer parameter `scramblingID` or `sequenceGenerationConfig` (`c`). This combination ensures uniqueness and variability in the generated sequences across different time and frequency resources, which is crucial for efficient wireless communication in 5G New Radio (NR) systems.