论文部分内容阅读
以长期演进(LTE)上行链路单载波频分多址(SC-FDMA)传输方案为基础,提出了一种基于用户协作的小区间干扰抑制传输方案。该方案采用译码转发中继工作方式,位于相邻小区边缘的两用户互为中继相互协作,在3个时隙内完成用户终端到基站的信息传输。仿真研究表明:该方案能够有效抑制小区间用户共信道干扰,同时充分利用用户协作所提供的空间分集增益提高小区边缘用户链路传输可靠性。此外,该方案所采用的块空时分组编码(B-STBC)能够很好地保持用户终端发射信号的低峰均比特性。
Based on Long Term Evolution (LTE) uplink single-carrier frequency division multiple access (SC-FDMA) transmission scheme, an inter-cell interference suppression transmission scheme based on user cooperation is proposed. The scheme adopts transcoding relay mode of operation, and two users at the edge of a neighboring cell mutually cooperate with each other to complete the information transmission from the user terminal to the base station in three time slots. The simulation results show that this scheme can effectively suppress co-channel interference among cells and make full use of the spatial diversity gain provided by user cooperation to improve the reliability of the link transmission on the edge of a cell. In addition, the B-STBC used in this scheme can well maintain the low peak-to-average ratio of signals transmitted by user terminals.