Geintra

This paper presents three novel methods to efficiently
generate and correlate sequence pairs with three zero correlation
zones in the sum of their aperiodic correlation functions. These sequences
have achieved great importance in communications systems
when the maximum transmission delay is less than the length
of these zones, because the multiple access interference (MAI) and
the intersymbol interference (ISI) can be removed. The proposed
algorithms are based on the properties of complementary sets of
sequences (CSS) and they offer an efficient hardware implementation
of the corresponding generators and correlators that reduces
the total number of operations to be performed in comparison with
straightforward implementations. That makes possible real-time
operation as well as the use of very long sequences.