Question: In a TDD (Time Division Duplexing) system with a chip rate of 1.28 Mcps, what is the maximum allowed occupied channel bandwidth for User Equipment (UE)?
Option 1: Less than 1.6 MHz
Option 2: Up to 3.84 MHz
Option 3: Greater than 5 MHz
Option 4: Exactly 2.5 MHz
Explanation: In TDD systems, especially with a specified chip rate like 1.28 Mcps, the occupied channel bandwidth is crucial for efficient spectrum usage and minimizing interference. The correct answer, "Less than 1.6 MHz", reflects the standard's requirement to ensure that the system operates within defined spectral limits, optimizing performance and coexistence with other wireless systems. This constraint is typical in telecommunications standards to balance between data throughput and spectral efficiency.