@INPROCEEDINGS {625,
author={J. Pereira and H. A. Silva},
doi={},
booktitle={IEEE International Symp. on Personal, Indoor and Mobile Radio Commun  - PIMRC},
title={Soft Orthogonal Phase shift Keying (SOPK) Modulation with OVSF-MAC for UMTS},
year={2002},
month={September},
volume={4/5},
pages={1572-1576} 
}