标题： 正交频分多址双向中继网络中的子载波配对资源分配 显示英文标题

标题： Resource Allocation with Subcarrier Pairing in OFDMA Two-Way Relay Networks

摘要： 本研究考虑了一种基于正交频分多址接入（OFDMA）的多用户双向中继网络，其中多个移动站（MSs）通过多个中继站（RSs）与一个公共基站（BS）进行通信。我们研究了基于子载波配对的中继功率分配、中继选择和子载波指派问题的联合优化。该问题被形式化为混合整数规划问题。通过使用对偶方法，我们提出了一种高效的算法以渐进最优的方式解决该问题。仿真结果表明，所提出的方案相较于传统方法能够显著提升系统性能。 显示英文摘要

摘要： This study considers an orthogonal frequency-division multiple-access (OFDMA)-based multi-user two-way relay network where multiple mobile stations (MSs) communicate with a common base station (BS) via multiple relay stations (RSs). We study the joint optimization problem of subcarrier-pairing based relay-power allocation, relay selection, and subcarrier assignment. The problem is formulated as a mixed integer programming problem. By using the dual method, we propose an efficient algorithm to solve the problem in an asymptotically optimal manner. Simulation results show that the proposed method can improve system performance significantly over the conventional methods.