Question: What characteristic of Zadoff-Chu sequences is utilized for generating random access preambles in E-UTRA to minimize interference?
Option 1: Zero Correlation Zone (ZC-ZCZ)
Option 2: High Peak-to-Average Power Ratio (PAPR)
Option 3: Frequency Hopping Spread Spectrum
Option 4: Orthogonal Frequency Division Multiplexing (OFDM) Symbol Structure
Explanation: The Zero Correlation Zone (ZC-ZCZ) characteristic of Zadoff-Chu sequences is crucial for generating random access preambles in E-UTRA. This feature ensures that the preambles have minimal correlation with each other within a certain zone, reducing interference between simultaneous random access attempts from different User Equipment (UEs), thus improving the overall efficiency and success rate of the random access process in the cellular network.