中国邮电高校学报(英文) ›› 2011, Vol. 18 ›› Issue (4): 45-51.doi: 10.1016/S1005-8885(10)60082-9

• Wireless • 上一篇    下一篇

Joint relay selection and power allocation algorithm in two-way relay networks with proportional fair constraint

丁逸1,刘元安2,谢刚2,邓潘亮李行政2   

  1. 1. 北京邮电大学电子工程学院
    2. 北京邮电大学
  • 收稿日期:2011-01-20 修回日期:2011-03-30 出版日期:2011-08-31 发布日期:2011-08-24
  • 通讯作者: 丁逸 E-mail:dingyi2348@hotmail.com
  • 基金资助:

    This work was supported by the Sino-Swedish IMT-Advanced Cooperation Project (2008DFA11780), the Canada-China Scientific and Technological Cooperation (2010DFA11320), the National Natural Science Foundation of China (60802033, 60873190), the Hi-Tech Research and Development Program of China (2008AA01Z211), the Fundamental Research Funds for the Central Universities (2009RC0308, G470209), and the Important National Science and Technology Specific Projects (2010ZX03007-003-04, 2010ZX03005-001-03).

Joint relay selection and power allocation algorithm in two-way relay networks with proportional fair constraint

  • Received:2011-01-20 Revised:2011-03-30 Online:2011-08-31 Published:2011-08-24
  • Contact: Yi DING E-mail:dingyi2348@hotmail.com
  • Supported by:

    This work was supported by the Sino-Swedish IMT-Advanced Cooperation Project (2008DFA11780), the Canada-China Scientific and Technological Cooperation (2010DFA11320), the National Natural Science Foundation of China (60802033, 60873190), the Hi-Tech Research and Development Program of China (2008AA01Z211), the Fundamental Research Funds for the Central Universities (2009RC0308, G470209), and the Important National Science and Technology Specific Projects (2010ZX03007-003-04, 2010ZX03005-001-03).

摘要:

In this paper, we consider the joint relay selection and power allocation problem for two-way relay systems with multiple relay nodes. Traditionally, relay selection schemes are primarily focused on selecting one relay node to maximize the transmission sum rate or minimize the outage probability. If so, it is possible to cause certain relay nodes overloaded. In addition, the joint relay selection and power allocation problem is a mixed integer program problem and prohibitive in terms of complexity. Therefore, we propose a novel low complexity joint relay selection and power allocation algorithm with proportional fair scheduling to get the load-balancing among potential relays. Simulation results turn out that, compared with round-robin schemes and max sum rate schemes, the proposed algorithm can achieve the tradeoff between system transmission sum rate and load-balancing.

关键词:

relay selection, power allocation, two-way relay network, amplify-and-forward relay, proportional fair scheduling

Abstract:

In this paper, we consider the joint relay selection and power allocation problem for two-way relay systems with multiple relay nodes. Traditionally, relay selection schemes are primarily focused on selecting one relay node to maximize the transmission sum rate or minimize the outage probability. If so, it is possible to cause certain relay nodes overloaded. In addition, the joint relay selection and power allocation problem is a mixed integer program problem and prohibitive in terms of complexity. Therefore, we propose a novel low complexity joint relay selection and power allocation algorithm with proportional fair scheduling to get the load-balancing among potential relays. Simulation results turn out that, compared with round-robin schemes and max sum rate schemes, the proposed algorithm can achieve the tradeoff between system transmission sum rate and load-balancing.

Key words:

relay selection, power allocation, two-way relay network, amplify-and-forward relay, proportional fair scheduling