On the Performance of Cooperative Diversity in Infrastructure-Based Networks with Two Relays
In this paper, the performance of four cooperative relaying schemes, which are classified by requiring a quantity of feedback information, is evaluated in the high SNR region and is compared with that of MIMO relaying schemes with two antennas. For amplify-and-forward (AF) relay, all schemes except the second hop selection scheme provide the second order diversity gain in high SNR region. For decode-and-forward (DF) relay, despite using more channel information, the coherent BF scheme does not offer the second order diversity. A system level simulation is evaluated to analyze the effects of user distribution in terms of the average capacity. For AF relay, the capacity of the cooperative relaying model is higher than that of the MIMO relaying model as about 0.2 bps/Hz. For DF relay, the MIMO relaying model provides capacity gain about larger than 0.3 bps/Hz for the coherent beamforming and the Alamouti-based scheme since the effect of array gain at relay for these schemes is more dominant factor to increase the capacity compared with the effect of reducing path loss.
KeywordsOutage Probability Cooperative Diversity Relay Channel System Level Simulation Array Gain
- 1.Yanikomeroglu, H.: Fixed and mobile relaying technologies for cellular networks. In: Second Workshop on Applications and Services in Wireless Networks (ASWN 2002), Paris, France, July 3-5, pp. 75–81 (2002)Google Scholar
- 3.Nicholas Laneman, J., Tse, D.N.C., Wornell, G.W.: Energy-efficient antenna sharing and relaying for wireless networks. In: Proc. of IEEE Wireless Commun. and Networking Conf., Chicago, IL, vol. 1, pp. 7–12 (March 2000)Google Scholar
- 6.Anghel, P.A., Kaveh, M.: On the performance of distributed space-time coding systems with one and two non-regenerative relays. IEEE Transactions on Wireless Communications (2005) (to appear)Google Scholar
- 7.Anghel, P.A., Leus, G., Kaveh, M.: Multi-user space-time coding in cooperative networks. In: Proc. of the International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2003), Hong Kong, April 6-10, vol. 4, pp. 73–6 (2003)Google Scholar
- 9.3GPP2 C.R1002-0 Version 1.0, “1xEV-DV Evaluation Methodology, Revision 0,” December 10 (2004)Google Scholar