In this thesis, a new quasi-synchronous multiple access scheme suitable for FH communication system employing NHZ hopping code is proposed.

The results shown that the MAI performance of NHZ quasi-synchronous system used NHZ sequences outperforms the asynchronous system employing random hopping frequency sequences.

The No-Hit-Zone (NHZ) hopping code is employed by the frequency hopper of NHZ FH communication systems, which have no hits at all within a predefined correlation zone in the vicinity of zero shift.