Multiuser bit loading for multicarrier systems

被引：22
|
作者：
Lee, Jungwon
Sonalkar, Ranjan V.
Cioffi, John M.
机构：
[1] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
[2] Mitre Corp, Eatontown, NJ 07724 USA
[3] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2006年 / 54卷 / 07期
关键词：
bit loading; discrete multitone (DMT); dynamic spectrum management; orthogonal frequency-division multiplexing (OFDM); power allocation;
D O I：
10.1109/TCOMM.2006.877955
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：
A multiuser bit-loading problem is investigated in multicarrier communication systems. Assuming knowledge of all the channel gains, we propose a multiuser bit-loading algorithm that attempts to minimize the total power to transmit a target rate-sum of all users. It is shown that this algorithm is optimal when the interference among users is nonexistent or strong. The simulation results show that the proposed algorithm finds a near-optimal solution for very-high-speed digital subscriber line systems.
引用
收藏
页码：1170 / 1174
页数：5
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