Abstract
Within a new paradigm, where wireless user co-operation is viewed as a form of (opportunistic) multipath, we exploit the unique capabilities of direct-sequence spread spectrum transmissions in handling multipath to design a novel spectrally efficient protocol for wireless cooperative networks. We show how and why our proposed system achieves diversity without increasing bandwidth. After analyzing its performance, we deduce that user capacity can be significantly improved with respect to existing third generation cellular systems in the uplink.
| Original language | English (US) |
|---|---|
| Article number | 1687751 |
| Pages (from-to) | 2321-2327 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 5 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2006 |
Bibliographical note
Funding Information:Manuscript received January 19, 2004; revised July 26, 2004, February 22, 2005, and October 16, 2005; accepted October 31, 2005. The editor coordinating the review of this letter and approving it for publication was Prof. K. B. Lee. This work was prepared through collaborative participation in the Communications and Networks Consortium sponsored by the U. S. Army Research Laboratory under the Collaborative Technology Alliance Program, Cooperative Agreement DAAD19-01-2-0011. The U. S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation thereon.
Keywords
- CDMA
- Cooperative diversity
- Diversity
- Fading