Subcarrier allocation for multi-user OFDM system

被引：13
|
作者：
Otani, Y [1 ]
Ohno, S [1 ]
Teo, KAD [1 ]
Hinamoto, T [1 ]
机构：
[1] Hiroshima Univ, Dept Artificial Complex Syst Engn, Higashihiroshima 7398527, Japan
来源：
2005 ASIA-PACIFIC CONFERENCE ON COMMUNICATIONS (APCC), VOLS 1& 2 | 2005年
关键词：
OFDMA; Bit-rate maximization; fair resource allocation; CHANNEL ESTIMATION;
D O I：
10.1109/APCC.2005.1554229
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Orthogonal Frequency Division Multiple Access (OFDMA) allows multiple users to make use of the same bandwidth as the single-user OFDM for data transmission and is a promising candidate to be used for future cellular systems. A key issue at hand is the rate-adaptive resource allocation problem. In this paper, we propose two subcarrier allocation schemes with low complexities based on the magnitude of the channel frequency responses. The proposed methods ensure a fair resource allocation in terms of the number of subcarriers with affordable bit-rates. Monte-Carlo simulations show that our proposed methods achieve a higher overall bit-rate for all users compared to previously derived subcarrier allocation schemes.
引用
收藏
页码：1073 / 1077
页数：5
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