id: 05877877
dt: a
an: 05877877
au: Zhong, Ruxiu; Ji, Fei; Chen, Fangjiong; Xiong, Shangkun; Chen, Xiaodong
ti: Distributed subcarrier and power allocation for cellular OFDMA systems.
so: Ponce de Leon F. de Carvalho, Andre (ed.) et al., Distributed computing and
    artificial intelligence. 7th international symposium (DCAI’10).
    Papers based on the presentations at the symposium, Valencia, Spain,
    September 7‒10, 2010. Berlin: Springer (ISBN 978-3-642-14882-8/pbk;
    978-3-642-14883-5/ebook). Advances in Intelligent and Soft Computing
    79, 349-356 (2010).
py: 2010
pu: Berlin: Springer
la: EN
cc: 
ut: distributed resource allocation; OFDMA; cellular system
ci: 
li: doi:10.1007/978-3-642-14883-5_45
ab: Summary: Dynamic resource allocation according to user’s link quality is
    cirical in OFDMA system to improve network capacity. In this paper we
    consider joint subcarrier and power allocation of the downlink
    communication of multi-cell OFDMA system. The allocation problem is
    formulated with the goal of minimizing the transmitted power subject to
    individual rate constraint of the users. We propose a suboptimal
    distributed algorithm which consists of two stages. In the first stage
    each cell ignore the inter-cell interference and perform single-cell
    resource allocation. In the second stage the cells iteratively exchange
    the allocation result and update resource allocation until users’
    rate requirements are met. The proposed algorithm is evaluated with
    computer simulations and compared with existing centralized algorithm.
    It is shown that the proposed algorithm obtain satisfactory tradeoff
    between quality of solution and complexity.
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