Resource allocation for OFDMA systems with multi-cell joint transmission

Li, Jingya, 1986 (author): Chalmers tekniska högskola,Chalmers University of Technology

Chen, Xin, 1980 (author): Beijing University of Posts and Telecommunications (BUPT)

Svensson, Tommy, 1970 (author): Chalmers tekniska högskola,Chalmers University of Technology

Eriksson, Thomas, 1964 (author): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

ISBN 9781467309714
2012
2012
English.
In: 2012 IEEE 13th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2012. Cesme, 17-20 June 2012. - 9781467309714 ; , s. 179-183

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Abstract Subject headings

This paper considers the downlink resource allocation of a coordinated multi-cell cluster in OFDMA systems with universal frequency reuse. Multi-cell joint transmission is considered via zero-forcing precoding. Furthermore, joint optimization of the user selection and power allocation across multiple subchannels and multiple cells is studied. The objective is to maximize the weighted sum rate under per-base-station power constraints. Based on general duality theory, two iterative resource allocation algorithms are proposed and compared with the optimal solution, which requires an exhaustive search of all possible combinations of users over all subchannels. Simulation results show that the two proposed algorithms achieve a performance very close to the optimal, with much lower computational complexity. In addition, we show that joint user set selection across multiple subchannels significantly improves the system performance in terms of the weighted sum rate.

TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)

By the author/editor: Li, Jingya, 1986; Chen, Xin, 1980; Botella Mascarel ...; Svensson, Tommy, ...; Eriksson, Thomas ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Telecommunicatio ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Signal Processin ...

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