A pragmatic adaptive transmission scheme with low-rate feedback using two-step partial CQI for multiuser OFDMA systems

被引：2

作者：

Kwon, Joong Hyung ^{[1
]}

Rhee, Duho ^{[1
]}

Whang, Younghoon ^{[1
]}

Kim, Kwang Soon ^{[1
]}

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2007年 / E90B卷 / 02期

关键词：

OFDMA; multiuser AMC; partial CQI;

D O I：

10.1093/ietcom/e90-b.2.405

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we investigate an efficient user selection and sub-band allocation algorithm in which each user transmits two-step partial CQI to reduce the amount of feedback in multi-user downlink OFDMA systems. Simulation results show that we can greatly reduce the feedback rate at the expense of negligible performance degradation compared to the full CQI feedback schemes or that we can greatly improve the performance with slightly reduced feedback rate compared to conventional partial CQI feedback schemes.

引用

页码：405 / 407

页数：3

共 5 条

[1] HAN ZH, 2004, IEEE VEH TECHN C VTC, V1, P511
[2] Transmit power adaptation for multiuser OFDM systems
Jang, JH
Lee, KB
[J]. IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2003, 21 (02) : 171 - 178
[3] Computationally efficient bandwidth allocation and power control for OFDMA
Kivanc, D
Li, GG
Liu, H
[J]. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2003, 2 (06) : 1150 - 1158
[4] Proakis J. G., 2001, DIGITAL COMMUNICATIO
[5] Wong CY, 1999, IEEE J SEL AREA COMM, V17, P1747, DOI 10.1109/49.793310

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