In this paper, we investigate the effect of spreading sequences on the peak-to-average power ratio (PAPR) in order to improve the power amplifier efficiency of multicarrier direct-sequence code-division multiple access systems. Baseband shaping has been identified to have a key role in reducing PAPR by spreading and we have found that chaos-based spreading sequences give good results as compared with Gold and i.i.d. sequences behaving differently depending on the number of subcarriers. © 2006 IEEE.
|Original language||English (US)|
|Title of host publication||Proceedings - IEEE International Symposium on Circuits and Systems|
|Number of pages||4|
|State||Published - Dec 1 2006|