Downlink Resource Allocation for Next Generation Wireless Networks with Inter-Cell Interference

作者：Yu Yiwei^*; Dutkiewicz Eryk; Huang Xiaojing; Mueck Markus

来源：IEEE Transactions on Wireless Communications, 2013, 12(4): 1783-1793.

DOI：10.1109/TWC.2013.030413.120760

• Next generation wireless networks
• OFDMA
• interference management
• resource allocation

This paper presents a novel downlink resource allocation scheme for OFDMA-based next generation wireless networks subject to inter-cell interference (ICI). The scheme consists of radio resource and power allocations, which are implemented separately. Low-complexity heuristic algorithms are first proposed to achieve the radio resource allocation, where graph-based framework and fine physical resource block (PRB) assignment are performed to mitigate major ICI and hence improve the network performance. Given the solution of radio resource allocation, a novel distributed power allocation is then performed to optimize the performance of cell-edge users under the condition that desirable performance for cell-center users must be maintained. The power optimization is formulated as an iterative barrier-constrained water-filling problem and solved by using the Lagrange method. Simulation results indicate that our proposed scheme can achieve significantly balanced performance improvement between cell-edge and cell-center users in multi-cell networks compared with other schemes, and therefore realize the goal of future wireless networks in terms of providing high performance to anyone from anywhere.

• 出版日期2013-4
• 单位CSIRO