2009/08/06 by Tobias Renk, Renk, Tobias, Holger Jaekel +7
Computer Science · Engineering · #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Full-Duplex Wireless Communications #Information Theory (cs.IT) #Wireless Communication Security Techniques
paper · doi:10.48550/arxiv.0908.0856
openalex publication_date 2009/08/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present the ε-outage capacity of incremental relaying at low signal-to-noise ratios (SNR) in a wireless cooperative network with slow Rayleigh fading channels. The relay performs decode-and-forward and repetition coding is employed in the network, which is optimal in the low SNR regime. We derive an expression on the optimal relay location that maximizes the ε-outage capacity. It is shown that this location is independent of the outage probability and SNR but only depends on the channel conditions represented by a path-loss factor. We compare our results to the ε-outage capacity of the cut-set bound and demonstrate that the ratio between the ε-outage capacity of incremental relaying and the cut-set bound lies within 1/√(2) and 1. Furthermore, we derive lower bounds on the ε-outage capacity for the case of K relays.