A novel resource allocation algorithm for multiuser downlink MIMO-OFDMA

被引：1

作者：

Sun Qiaoyun ^{[1
]}

Tian Hui ^{[1
]}

Dong Kun ^{[1
]}

Wang Shengdong ^{[1
]}

Zhang Ping ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Minist Educ, Key Lab Universal Wireless Commun, Wireless Technol Innovat Inst, Beijing, Peoples R China

来源：

WCNC 2008: IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-7 | 2008年

关键词：

MIMO-OFDMA; dynamic resource allocation; eigen beamforming;

D O I：

10.1109/WCNC.2008.328

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, dynamic resource allocation problems for multi-user downlink MIMO-OFDMA are investigated. With the goal of minimizing the total transmit power under condition that QoS of different users can be guaranteed, a novel dynamic resource allocation algorithm is proposed. First of all, a new subcarrier allocation policy is given based on the perfect CSI. And then a spatial subchannels grouping mechanism is proposed for bit allocation. In order to utilize the spatial resource efficiently, the proposed algorithm exploits all non-zero spatial subchannels to transmit data. The proposed scheme reduces the computational complexity significantly at little expense of the system performance. Numerical simulations show that the proposed algorithm is a good tradeoff between system performance and computational complexity.

引用

页码：1844 / 1848

页数：5

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