Question: What is a key characteristic of the transmission scheme defined for the Physical Shared Sidelink Channel (PSSCH) in terms of antenna usage?
Option 1: The PSSCH uses a minimum of four antenna ports for all transmissions.
Option 2: The PSSCH transmission utilizes a single antenna port exclusively.
Option 3: The PSSCH transmission is performed with up to two antenna ports, specifically antenna ports 1000-1001.
Option 4: The number of antenna ports used by the PSSCH varies based on the type of data being transmitted.
Explanation: This correct answer highlights a specific technical detail about the PSSCH transmission scheme, emphasizing its limitation to utilizing up to two defined antenna ports (1000-1001). This is crucial for understanding the physical layer procedures in 5G New Radio (NR) sidelink communications, where efficient use of antennas directly impacts network performance and capacity. The incorrect options (1, 2, and 4) introduce plausible but erroneous scenarios, testing the respondent's nuanced understanding of NR physical layer specifications.