title: Adaptive phase rolling for opportunistic beamforming in OFDMA systems with a small number of users.
abstract: The performance of opportunistic beamforming might be degraded if the number of users is small. This paper proposes an adaptive opportunistic beamforming technique for orthogonal frequency division multiple access systems, which can produce good results even with a small number of users. This paper also proposes a modified proportional fairness scheduling algorithm, which can further improve the performance of the proposed opportunistic beamforming technique.
authors.affiliation: Department of Information and Communication Engineering, Dongguk University, 30 Pildong-ro 1 Gil, Jung-gu, Seoul 100-715, Republic of Korea.
authors.forename: Minjoong
authors.initials: M
authors.lastname: Rim
mesh_terms: D003142:Communication; D008962:Models, Theoretical; D059015:Wireless Technology