Average spectral efficiency of opportunistic QRD-based cyclic prefixed single-carrier cooperative diversity systems with power allocation

Kyeong Jin Kim; Theodoros A. Tsiftsis; George K. Karagiannidis

doi:10.1109/GLOCOM.2010.5683874

Average spectral efficiency of opportunistic QRD-based cyclic prefixed single-carrier cooperative diversity systems with power allocation

Kyeong Jin Kim, Theodoros A. Tsiftsis, George K. Karagiannidis

Department of Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Due to higher peak-to-average power ratio and higher power backing-off in OFDM relaying systems, a cyclic prefixed single-carrier cooperative diversity system is considered in this paper. Under the transmission power constraint, the joint optimal power allocation to the source and relay node is investigated. For a two-hop decode-and-forward relaying protocol, the optimal power allocation is first obtained in the considered system, and then the opportunistic destination terminal selection is applied to improve the achievable average spectral efficiency (ASE). Based on the proposed QR decomposition (QRD)-based receiver in the destination terminal, closed-form expressions for the maximum achievable ASE are derived. Simulation results verify the derived closed-form analytical expressions.

Original language	English
Title of host publication	2010 IEEE Global Telecommunications Conference, GLOBECOM 2010
DOIs	https://doi.org/10.1109/GLOCOM.2010.5683874
Publication status	Published - 2010
Event	53rd IEEE Global Communications Conference, GLOBECOM 2010 - Miami, FL, United States Duration: Dec 6 2010 → Dec 10 2010

Publication series

Name	GLOBECOM - IEEE Global Telecommunications Conference

Other

Other	53rd IEEE Global Communications Conference, GLOBECOM 2010
Country	United States
City	Miami, FL
Period	12/6/10 → 12/10/10

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/GLOCOM.2010.5683874

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Kim, K. J., Tsiftsis, T. A., & Karagiannidis, G. K. (2010). Average spectral efficiency of opportunistic QRD-based cyclic prefixed single-carrier cooperative diversity systems with power allocation. In 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010 [5683874] (GLOBECOM - IEEE Global Telecommunications Conference). https://doi.org/10.1109/GLOCOM.2010.5683874

Average spectral efficiency of opportunistic QRD-based cyclic prefixed single-carrier cooperative diversity systems with power allocation. / Kim, Kyeong Jin; Tsiftsis, Theodoros A.; Karagiannidis, George K.

2010 IEEE Global Telecommunications Conference, GLOBECOM 2010. 2010. 5683874 (GLOBECOM - IEEE Global Telecommunications Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kim, KJ, Tsiftsis, TA & Karagiannidis, GK 2010, Average spectral efficiency of opportunistic QRD-based cyclic prefixed single-carrier cooperative diversity systems with power allocation. in 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010., 5683874, GLOBECOM - IEEE Global Telecommunications Conference, 53rd IEEE Global Communications Conference, GLOBECOM 2010, Miami, FL, United States, 12/6/10. https://doi.org/10.1109/GLOCOM.2010.5683874

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AB - Due to higher peak-to-average power ratio and higher power backing-off in OFDM relaying systems, a cyclic prefixed single-carrier cooperative diversity system is considered in this paper. Under the transmission power constraint, the joint optimal power allocation to the source and relay node is investigated. For a two-hop decode-and-forward relaying protocol, the optimal power allocation is first obtained in the considered system, and then the opportunistic destination terminal selection is applied to improve the achievable average spectral efficiency (ASE). Based on the proposed QR decomposition (QRD)-based receiver in the destination terminal, closed-form expressions for the maximum achievable ASE are derived. Simulation results verify the derived closed-form analytical expressions.

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