Synchronization signal optimizations for symbol index detection

An apparatus for wireless communication comprising:

• a processor,
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, from a base station, an extended synchronization signal sequence for a physical broadcast channel in a synchronization subframe;
• receive cell-specific information associated with the base station;
• identify a pseudo-random sequence based at least in part on the cell-specific information;
• and
• descramble the extended synchronization signal sequence based at least in part on the pseudo-random sequence and a length associated with the extended synchronization signal sequence.

A non-transitory computer-readable medium storing code, the code comprising instructions executable by a processor to:

• receive, from a base station, an extended synchronization signal sequence for a physical broadcast channel in a synchronization subframe;
• receive cell-specific information associated with the base station;
• identify a pseudo-random sequence based at least in part on the cell-specific information;
• and
• descramble the extended synchronization signal sequence based at least in part on the pseudo-random sequence and a length associated with the extended synchronization signal sequence.