Fairness based resource allocation for multiuser MISO-OFDMA systems with beamforming

doi:10.1016/S1005-8885(08)60175-2

Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (1): 38-43.doi: 10.1016/S1005-8885(08)60175-2

• Wireless • Previous Articles Next Articles

Fairness based resource allocation for multiuser MISO-OFDMA systems with beamforming

SUN Kai, WANG Ying, CHEN Zi-xiong, ZHANG Ping

Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:1900-01-01 Revised:1900-01-01 Online:2009-02-26
Contact: SUN Kai

Abstract

Abstract:

Resource allocation problem in multiuser multiple input single output-orthogonal frequency division multiple access (MISO-OFDMA) systems with downlink beamforming for frequency selective fading channels is studied. The article aims at maximizing system throughput with the constraints of total power and bit error rate (BER) while supporting fairness among users. The downlink proportional fairness (PF) scheduling problem is reformulated as a maximization of the sum of logarithmic user data rate. From necessary conditions on optimality obtained analytically by Karush-Kuhn-Tucker (KKT) condition, an efficient user selection and resource allocation algorithm is proposed. The computer simulations reveal that the proposed algorithm achieves tradeoff between system throughput and fairness among users.

Key words:

space-division multiple access (SDMA);multiuser diversity;proportional fairness;resource allocation

SUN Kai, WANG Ying, CHEN Zi-xiong, ZHANG Ping. Fairness based resource allocation for multiuser MISO-OFDMA systems with beamforming[J]. Acta Metallurgica Sinica(English letters), 2009, 16(1): 38-43.

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Fairness based resource allocation for multiuser MISO-OFDMA systems with beamforming

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