Abstract
In this paper, practical cooperative diversity schemes are proposed and investigated. The outage probability is used to evaluate four constant-power decode-and-forward cooperative schemes: Pre-Select One Relay, Best-Select Relay, Simple Relay, and ST-Coded Relay. Two new methods for improving these approaches, called simple distributed power allocation and m-Group ST-Coded Relay, are proposed. It is shown that the performance of Simple Relay and ST-Coded Relay is improved significantly by employing the proposed power allocation without an increase in implementation complexity. Similarly, m-Group ST-Coded Relay gains in lower complexity with only a slight degradation in performance. Performance of the various schemes in a network is evaluated through the link-failure probability.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1489-1493 |
| Number of pages | 5 |
| Journal | IEEE Vehicular Technology Conference |
| Volume | 61 |
| Issue number | 3 |
| State | Published - 2005 |
| Event | 2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future - Stockholm, Sweden Duration: May 30 2005 → Jun 1 2005 |
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
Keywords
- Cooperative diversity
- Decode-and-forward
- Link-failure probability
- Outage probability
- Relay networks