Transmit power allocation for a downlink two-user interference channel

被引：26

作者：

Park, TW ^{[1
]}

Jang, JH ^{[1
]}

Shin, OS ^{[1
]}

Lee, KB ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Elect Engn & Comp Sci, Seoul 151742, South Korea

来源：

IEEE COMMUNICATIONS LETTERS | 2005年 / 9卷 / 01期

关键词：

greedy power allocation; interference channel; transmit power allocation; water-filling;

D O I：

10.1109/LCOMM.2005.01019

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

We develop the optimal transmit power allocation scheme that maximizes the total throughput for a downlink two-user interference channel. The derived optimal scheme allocates the total power to one user in better channel state, as in the greedy scheme, when the degree of. interference between users exceeds a certain threshold. When it is less than the threshold, on the contrary, the transmit power is divided into two users, as in the water-filling scheme. Numerical results a:re presented to verify the optimality of the derived scheme and to show throughput gains over the greedy and water-filling schemes.

引用

页码：13 / 15

页数：3

共 5 条

[1] Rate and power control in a two-user multicarrier channel with no coordination: The optimal scheme versus a suboptimal method [J].

Chung, ST ;

Cioffi, JM .

IEEE TRANSACTIONS ON COMMUNICATIONS, 2003, 51 (11) :1768-1772

[2]

Cover T. M., 2005, ELEM INF THEORY, DOI 10.1002/047174882X

[3] Variable-rate variable-power MQAM for fading channels [J].

Goldsmith, AJ ;

Chua, SG .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1997, 45 (10) :1218-1230

[4] Transmit power adaptation for multiuser OFDM systems [J].

Jang, JH ;

Lee, KB .

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2003, 21 (02) :171-178

[5]

Shin SJ, 2002, IEICE T COMMUN, VE85B, P1914

← 1 →