Abstract
Despite the very substantial body of research on the performance analysis of cooperative relay systems, most studies focus on either the symbol error ratio (SER) or outage behavior. This paper first analyzes the asymptotic average packet error probability (PEP) of uncoded packet cooperative relay system for DF (Decode-and-Forward) schemes in the high signal-to-noise ratio (SNR) region. In particular, the effect of packet length on optimum power allocation r(opt) is studied. It is found, with a symmetrical links assumption, the optimum power allocation ratio is in the region of 1/2 < r(opt) < (3 - root 3)/2 regardless of modulation scheme; and when packet length becomes large enough, the optimum opt r(opt) value converges to (3 - root 3)/2.
| Original language | English |
|---|---|
| Pages (from-to) | - |
| Number of pages | 5 |
| Journal | 2010 ieee 72nd vehicular technology conference fall |
| Publication status | Published - 2010 |
Keywords
- cooperative relay
- DF
- power allocation
- packet length
- FADING ENVIRONMENT
- WIRELESS NETWORKS
- PROTOCOLS