TY - GEN
T1 - Outage capacity of incremental relaying at low signal-to-noise ratios
AU - Renk, T.
AU - Jäkel, H.
AU - Jondral, F. K.
AU - Gündüz, D.
AU - Goldsmith, A.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
KW - ε-outage capacity
KW - Cooperative communications
KW - Incremental relaying
UR - https://www.scopus.com/pages/publications/77950971176
U2 - 10.1109/VETECF.2009.5378918
DO - 10.1109/VETECF.2009.5378918
M3 - Conference contribution
AN - SCOPUS:77950971176
SN - 9781424425150
T3 - IEEE Vehicular Technology Conference
BT - Proceedings of the 2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall
T2 - 2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall
Y2 - 20 September 2009 through 23 September 2009
ER -