Distributed STBC with relay subset selection for single carrier relay-assisted transmissions

This paper investigates the coding gain achieved between the best relay and the relay subset selection in a two-hop wireless network with relay-assisted transmission. Both best relay and relay subset selection achieves the maximum diversity, but the later becomes a better alternative in certain scenarios. First in low mobility scenarios, when the channel fading remains static for longer duration and this could result in an unfair usage of the same (best) relay terminal for an extended period of time. Second, when there is a power constraint which limits the maximum transmit power at the relay terminals. We have presented a simple technique for calculating the pairwise error probability (PEP) upper bound for distributed time-reversal space-time block code (D-TR-STBC) with best relay and relay subset selection, which offers an easy way of quantifying the coding gain achieved. Results from the numerical simulation of error probabilities are given to corroborate our analysis.

[1]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[2]  Elza Erkip,et al.  User cooperation diversity. Part I. System description , 2003, IEEE Trans. Commun..

[3]  Yindi Jing,et al.  Using Orthogonal and Quasi-Orthogonal Designs in Wireless Relay Networks , 2007, IEEE Transactions on Information Theory.

[4]  Gregory W. Wornell,et al.  Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks , 2003, IEEE Trans. Inf. Theory.

[5]  Arogyaswami Paulraj,et al.  MIMO antenna subset selection with space-time coding , 2002, IEEE Trans. Signal Process..

[6]  Matthew C. Valenti,et al.  Practical relay networks: a generalization of hybrid-ARQ , 2005 .

[7]  Aggelos Bletsas,et al.  A simple Cooperative diversity method based on network path selection , 2005, IEEE Journal on Selected Areas in Communications.

[8]  Robert W. Heath,et al.  Opportunistic Relay Selection with Limited Feedback , 2007, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring.

[9]  Erik G. Larsson,et al.  Cooperative transmit diversity based on superposition modulation , 2005, IEEE Communications Letters.

[10]  Raviraj S. Adve,et al.  Improving amplify-and-forward relay networks: optimal power allocation versus selection , 2006, IEEE Transactions on Wireless Communications.

[11]  Tharmalingam Ratnarajah,et al.  Distributed STBC for single carrier relay-assisted transmissions over frequency-selective channels , 2008, 2008 IEEE International Symposium on Information Theory.

[12]  Helmut Bölcskei,et al.  Fading relay channels: performance limits and space-time signal design , 2004, IEEE Journal on Selected Areas in Communications.

[13]  Arogyaswami Paulraj,et al.  A transmit diversity scheme for channels with intersymbol interference , 2000, 2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record.

[14]  Georgios B. Giannakis,et al.  Single-carrier space-time block-coded transmissions over frequency-selective fading channels , 2003, IEEE Trans. Inf. Theory.

[15]  Halim Yanikomeroglu,et al.  Relayer selection strategies in cellular networks with peer-to-peer relaying , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).