Orthogonal variable spreading factor codes with zero-correlation zone for TS-UWB

@article{Wu2005OrthogonalVS,
  title={Orthogonal variable spreading factor codes with zero-correlation zone for TS-UWB},
  author={Di Wu and Predrag Spasojevic and Ivan Seskar},
  journal={IEEE Wireless Communications and Networking Conference, 2005},
  year={2005},
  volume={2},
  pages={807-812 Vol. 2}
}
We propose an algorithm for the construction of ternary orthogonal variable-spreading-factor (OVSF) codes with zero-correlation zone (ZCZ); this is of particular interest for ternary sequence based UWB (TS-UWB) systems. The conventional approach is to design OVSF codes based on Walsh codes and, in this case, the orthogonality of the corresponding OVSF codes is easily lost when synchronism is lacking or in a multipath scenario. 2D OVSF codes possess ideal correlation properties which… CONTINUE READING