Threshold-based hybrid relay selection and power allocation scheme

Xin Song, MingLei Zhang, WenMIn Liu, ShengBao Wang

Abstract


AbstractTo minimize total transmit power in a system while guaranteeing the outage probability at the same time in a cooperative system, we propose and analyse two threshold-based hybrid relay selection and power allocation schemes for a three-node cooperative relaying system. They are designated as: the hybrid amplify-direct-forward relaying (HADF) and incremental hybrid decode-direct-forward relaying (IHDDF) schemes. In the HADF scheme, a specific outage probability threshold is derived to determine that the system chooses to optimize power allocation of its source and relay in amplify-and-forward (AF) mode or optimize the power of its source in direct-transmit (DT) mode without a relay. In IHDDF, according to the outage probability threshold, the system chooses to optimize its power in turn with incremental decode-and-forward opportunistic relaying (IDFO) mode or DT mode. Closed-form expressions of the total transmit power of the proposed HADF and IHDDF schemes are derived. The proposed schemes have low computational complexity and system cost. Theoretical analysis and simulation results show that the HADF scheme outperforms the AF and DT schemes, and the total transmission power of the IHDDF scheme is reduced significantly compared with the IDFO and DT schemes. Compared with the HADF scheme, the IHDDF scheme has a better total transmit power in special channel condition.

Keywordspower allocation, three-node cooperative relaying system, amplify-and-forward, incremental decode-and-forward opportunistic relaying.


Keywords


communication;

Full Text:

PDF

References


I. Ku, C. X. Wang and J. Thompson, “Spectral, energy and economic efficiency of relay-aided cellular networks,” IET Commun. vol. 7, pp. 1476–1486, 2013.

ChengXiang Wang, Xuemin Hong, Xiaohu Ge and Xiang Cheng, Cooperative MIMO channel models: A survey, IEEE Commun. Mag. vol. 48, pp. 80–87, 2010.

A. Sendonaris, E. Erkip and B. Aazhang, User cooperation diversity, part I: System description, IEEE Trans. Commun. vol. 51, pp. 1927–1938, 2003.

A. Sendonaris, E. Erkip and B. Aazhang, User cooperation diversity, part II: Implementation aspects and performance analysis, IEEE Trans. Commun. vol. 51, pp. 1938–1948, 2003.

A. Sendonaris, E. Erkip and B. Aazhang, User cooperation diversity-Part I: System description, IEEE Trans. Commun. vol. 51, pp. 1927–1938, 2003.

J. N. Laneman, D. N. C. Tse and G. W. Wornell, Cooperative diversity in wireless networks: Efficient protocols and outage behavior, IEEE Trans. Inform. Theory . vol. 50, pp. 3062–3080, 2004.

Kamel Tourki, Yang Hong-Chuan, Mohamed-Slim Alouini.

Accurate outage analysis of incremental decode-and-forward opportunistic relaying. IEEE Transactions on Wireless Commun. vol. 10, pp. 1021–1025, 2011.

J. N. Laneman and G. W. Wornell, Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks, IEEE Trans. Inform. Theory. vol. 49, pp. 2415–2425, 2003.

M. Janani, A. Hedayat, T. Hunter and A. Nosratinia, Coded cooperation in wireless communications: Space-time transmission and iterative decoding, IEEE Trans. Signal Processing. vol. 52, pp. 362–371, 2004.

G. Kramer, M. Gastpar and P. Gupta, Cooperative strategies and capacity theorems for relay networks, IEEE Trans. Inform. Theory. vol. 51, pp. 3037–3063, 2005.

A. H. Bastami and A. Olfat, Optimal SNR-based selection relaying scheme in multi-relay cooperative networks with distributed space-time coding, IET Commun. vol. 4, pp. 619–630, 2010.

A. Host-Madsen and J. Zhang, Capacity bounds and power allocation for wireless relay channels, IEEE Trans. Inform. Theory. vol. 51, pp. 2020–2040, 2005.

F. A. Onat, Threshold selection for SNR-based selective digital relaying in cooperative wireless networks, IEEE Trans. Wireless Commun. vol. 7, pp. 4226–4237, 2008.

A. Reznik, S. R. Kulkarni and S. Verdú, Degraded Gaussian multirelay channel: Capacity and optimal power allocation, IEEE Trans. Inform. Theory. vol. 50, pp. 3037–3046, 2004.

M. O. Hasna and M.-S. Alouini, Optimal power allocation for relayed transmissions over Rayleigh-fading channels, IEEE Trans. Wireless Commun. Vol.3, pp. 1999–2004, 2004.

M. Dohler, A. Gkelias and H. Aghvami, Resource allocation for FDMA-based regenerative multihop links, IEEE Trans. Wireless Commun. vol. 3, pp. 1989–1993, 2004.

I. Maric and R. D. Yates, Bandwidth and Power Allocation for Cooperative Strategies in Gaussian Relay Networks, IEEE Transactions on Information Theory. vol. 51, pp. 1880–1889, 2010.

X. Cai, Y. Yao and G. B. Giannakis, Achievable rates in low-power relay links over fading channels, IEEE Trans. Commun. vol. 53, pp. 184–194, 2005.

Y. Li, S. Tong and T. Li, Hybrid Fuzzy Adaptive Output Feedback Control Design for MIMO Time-Varying Delays Uncertain Nonlinear Systems, IEEE Transactions on Fuzzy Systems. vol. PP, pp. 1, 2015.

Y. Li, S. Tong and T. Li, Composite Adaptive Fuzzy Output Feedback Control Design for Uncertain Nonlinear Strict-Feedback Systems With Input Saturation, IEEE Transactions on Cybernetics. vol. 45, pp. 2299–2308, 2015.




DOI: http://dx.doi.org/10.22385/jctecs.v8i0.126