ID 原文 译文
57728 为了提升移动边缘计算( MEC) 网络中的任务卸载效用，提出了一种基于任务卸载增益最大化的时延和能耗均衡优化算法. In order to enhance the task offloading utility in mobile-edge computing ( MEC) networks，adelay and energy tradeoff optimization algorithm was proposed for maximizing the users’task offloadinggains.
57729 通过分析通信资源和计算资源对时延和能耗这 2 种性能指标的制约关系，将原问题分解为联合发射功率子信道分配子问题和 MEC 计算频率分配子问题. The original optimization problem was decomposed into two sub-problems，i. e. ，the joint transmitpower and sub-channel allocation sub-problem and the MEC computing frequency allocation sub-problem，upon the analysis of the restriction of communication and computation resources to the delay and energyconsumption performances.
57730 通过 Karush-Kuhn-Tucker 条件，导出了最优的 MEC 计算频率闭式解. The optimal MEC computing frequency was directly derived in the closed formby the Karush-Kuhn-Tucker condition.
57731 此外，提出了一种基于二分法的发射功率分配算法和基于匈牙利二部图匹配的子信道分配算法. In addition，an efficient bisection method based transmit power allocation algorithm and a bipartite graph matching based sub-channel allocation algorithm were proposed，respectively.
57732 仿真结果表明，提出的算法相比传统算法可以显著提升用户的任务卸载效用. Numerical simulation results showed that，the proposed algorithm could improve the task offloading utility remarkably when compared with some traditional algorithms.
57733 提出了一种基于新型非正交多址接入技术———图样分割多址接入( PDMA) 技术的可见光通信系统. A visible light communications ( VLC) system based on non-orthogonal multiple access tech- nology － pattern division multiple access ( PDMA) ，is proposed.
57734 PDMA技术可同时优化多用户可见光通信系统的发送端和接收端，实现非正交传输. PDMA technology can simultaneously optimizes the transmitter and receiver of a multi-user VLC system to achieve non-orthogonal transmission.
57735 在发送端，在相同的时域和频域资源内，为实现资源复用，需要将多个用户信号的功率域、空域、编码域进行单个或多个联合编码. To achieve the resources reuse at the transmitter under the conditions of frequency domain at the same time，it is necessary to use the joint coding of power，space and channel coding of the multiusers.
57736 接收端进行多用户检测时，采用消息传递算法优化可见光通信系统的整体性能. The multiuser detection at the receiver is，based on message passing algorithm，to optimize the performances of VLC.
57737 相比于正交频分复用多址接入技术，PDMA 技术在支持用户数量方面能够提供 150% 的过载增益. PDMA can support 150% overload gain of the number of users compared with orthogonal fre- quency division multiplexing access.