Power Controlled Coded-Sequence Self-Encoded Spread Spectrum Communications

Authors

Poomathi Duraisamy, University of Nebraska-LincolnFollow
Liang Chi, University of Nebraska at OmahaFollow
Won Mee Jang, University of Nebraska-LincolnFollow
Lim Nguyen, University of Nebraska-LincolnFollow

Date of this Version

2011

Citation

2011 45th Annual Conference on Information Sciences and Systems (CISS), doi: 10.1109/CISS.2011.5766112

Comments

Copyright IEEE 2011. Used by permission.

Abstract

In this paper, we propose to apply power control to coded-sequence self-encoded spread spectrum (CS-SESS) communications in dynamic fading channels. We determine the statistical characteristics of the power enhancement in the transmitter due to power control and show that the proposed approach improves the power efficiency in mobile cellular systems.

In addition, we propose to mitigate self interference in CSSESS by exploiting the information that the transmitter obtains, through feedback training sequences, about the de-spreading code in the receiver. The results show that the mitigation is significant even with only selective training chips from the de-spreading sequence. Similar improvement can be achieved with feed-forward training sequences to the receiver about the spreading code in the transmitter.