Energy Minimization in OFDMA Downlink Systems: A Sequential Linear Assignment Algorithm for Resource Allocation

被引：11

作者：

Joung, Jingon ^{[1
]}

Ho, Chin Keong ^{[1
]}

Tan, Peng Hui ^{[1
]}

Sun, Sumei ^{[1
]}

机构：

[1] ASTAR, I2R, Singapore, Singapore

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2012年 / 1卷 / 04期

关键词：

Energy efficiency; OFDMA; frequency resource allocation; linear assignment algorithm; POWER ALLOCATION; MULTIUSER OFDM;

D O I：

10.1109/WCL.2012.042512.120066

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

We propose a sequential linear assignment algorithm (SLAA) for resource allocation of OFDMA systems consisting of M users and N (N > M) resource blocks, with the aim of achieving near optimal energy consumption with polynomial complexity. The proposed SLAA allocates subchannels through a linear assignment algorithm (LAA), sequentially; thus, it requires O(M N-2(N - M)(2)) complexity. From numerical results, the required power from the proposed assignment is observed to be within around 0.4 % of the lower bound of minimum possible power required to achieve the same target rates.

引用

页码：300 / 303

页数：4

共 7 条

[1]

[Anonymous], IET NETWORKS UNPUB

[2]

Burkard RE., 1999, Linear Assignment Problems and Extensions, P75

[3] Rate and power allocation for multiuser OFDM: An effective heuristic verified by branch-and-bound [J].