Resource allocation algorithm in LTE uplink SC-FDMA system for time-varying channel with imperfect channel state information

被引：0

作者：

XU Quan-sheng ^{[1
]}

LI Xi ^{[1
]}

JI Hong ^{[1
]}

YAO Li-ping ^{[1
]}

机构：

[1] Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications

来源：

The Journal of China Universities of Posts and Telecommunications | 2013年 / 02期

基金：

中国国家自然科学基金;

关键词：

SC-FDMA; resource allocation; imperfect channel state information; discrete stochastic optimization; time-varying channel;

D O I：

暂无

中图分类号：

TN929.531 [频分多址（FDMA）移动通信];

学科分类号：

080402 ; 080904 ; 0810 ; 081001 ;

摘要：

In long term evolution (LTE) uplink single carrier frequency division multiple access (SC-FDMA) system, the restriction that multiple resource blocks (RBs) allocated to a user should be adjacent, makes the resource allocation problem hard to solve. Moreover, with the practical constraint that perfect channel state information (CSI) cannot be obtained in time-varying channel, the resource allocation problem will become more difficult. In this paper, an efficient resource allocation algorithm is proposed in LTE uplink SC-FDMA system with imperfect CSI assumption. Firstly, the resource allocation problem is formulated as a mixed integer programming problem. Then an efficient algorithm based on discrete stochastic optimization is proposed to solve the problem. Finally, simulation results show that the proposed algorithm has desirable system performance.

引用

页码：7 / 11

页数：5