Optimizing Power Allocation and Matching of Cooperative Diversity Systems

— In this paper, we study how to appropriately match users for two-user cooperative diversity systems that deploy optimal power allocation for an amplify and forward or a regenerate and forward CD scheme. Optimized power allocation strategies, which minimize the total energy consumption for the cooperating pair, are proposed for both CD schemes. A novel matching algorithm with less computational complexity than, but with performance very close to the state-of-the-art optimal maximal weighted matching algorithm is developed. Numerical results show that, with optimal power allocation, the proposed matching algorithm can acheive 9 ∼ 10 dB cooperative diversity gain, which is equivalent to prolonging the cell phone battery recharge time by 10 times.

• Type: Conference
• Year: 2007
• Where: ICC
• Authors: Veluppillai Mahinthan, Lin Cai, Jon W. Mark, Xuemin Shen
• Keywords: Communications, ICC 2007, Matching Algorithm, Optimal Power Allocation, Power Allocation Strategies