Efficient subcarrier and bit allocation algorithm for OFDMA system with adaptive modulation

被引：0
|
作者：
Kim, HS [1 ]
Kwak, JS [1 ]
Choi, JM [1 ]
Lee, JH [1 ]
机构：
[1] Seoul Natl Univ, Sch Elect Engn, Seoul 151742, South Korea
来源：
VTC2004-SPRING: 2004 IEEE 59TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS | 2004年
关键词：
adaptive subcarrier allocation; transmit power; complexity;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper investigates the adaptive subcarrier and bit allocation algorithm for OFDMA systems. To minimize overall transmit power, we propose a novel adaptive subcarrier and bit allocation algorithm based on channel state information Moreover, the block-wise method is considered based on channel variation for adaptive subcarrier and bit allocation. It is shown that a near optimal solution is obtained by the proposed algorithm which has low complexity compared to that of other conventional algorithms. Also, it is shown that the block-wise method significantly reduces the complexity and the feedback or side information though slight transmit power increase.
引用
收藏
页码：1816 / 1820
页数：5
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