论文部分内容阅读
为了提高基于正交频分复用(OFDM)的放大转发模式下双向中继系统总容量,提出了一种低复杂度的基于信道增益排序子载波配对算法(SP-SCC)和一种联合该子载波配对与功率分配的资源优化策略.该策略首先是在等功率的条件下进行SP-SCC方法的子载波配对;然后在系统总功率的限制下,利用对偶分解获得各子载波间的功率分配;最后将各子载波上的功率分配到各节点上,即获得了各节点上最优功率分配.仿真结果表明,所提的资源分配策略可以提高系统总容量.
In order to improve the total capacity of bidirectional relay system based on Orthogonal Frequency Division Multiplexing (OFDM), a low complexity channel-aligned subcarrier pairing algorithm based on channel gain (SP-SCC) Subcarrier pairing and power allocation resource optimization strategy.This strategy firstly carries out SP-SCC subcarrier pairing under the condition of equal power and then uses the dual decomposition to obtain the power between subcarriers under the limitation of the total system power Finally, the power of each subcarrier is distributed to each node, which obtains the optimal power allocation of each node.The simulation results show that the proposed resource allocation strategy can increase the total capacity of the system.