ID 原文 译文
47256 推导干扰信号频偏与时延估计的修正的克拉美罗界（MCRB, modified Cramer-Rao bound），为算法性能评价提供理论依据。 Modified Cramer-Rao bound (MCRB) of interference frequency offset and time delay was derived,which provided theoretical basis for performance of the proposed algorithm.
47257 仿真结果表明，8PSK 调制方式下频偏估计算法与已有算法性能相当，但复杂度降低了23。 Simulation results show that the algorithmhas similar performance with existing algorithms, but its complexity is reduced by two-thirds.
47258 在大规模 MIMO（multiple input multiple output）系统的信道估计过程中，不可避免地需要在不同小区中复用同样的导频序列，由此而产生导频污染问题， Pilot contamination is appeared in massive MIMO (multiple input multiple output) system when using thesame pilot sequences at different cells to get the channel state information.
47259 且当基站天线趋向于无穷多时，它成为了系统性能提升的瓶颈。 It becomes a bottleneck problem of massiveMIMO when the number of antenna goes infinite.
47260 为了抑制导频污染，提出一种联合时移和小区空间划分的导频序列分配（TS-CSPA, time shifted-cell sectorizationpilot assignment）方法， In order to dealt with pilot contamination, a new TS-CSPA jointscheme was proposed.
47261 该方法通过从时域和空间域 2 个角度降低导频复用程度来抑制导频污染。 This scheme can mitigate pilot contamination by reduce the reuse of pilot sequence through thetime domain and space domain.
47262 推导了系统使用该方案时的等效信干比和用户可达速率。 And the closed-form expression for the achieved rates and signal to interference plusnoise ratio(SINR) to verify the advantages of the proposed scheme were given.
47263 仿真结果表明所提出的方法能有效地抑制大规模 MIMO 系统的导频污染，相比于其他几种抑制方法能够在系统性能上获得一定程度的提升。 Numerical results show that significantperformance gains to mitigate pilot contamination problem compared to other methods.
47264 针对 LTE-A 上行蜂窝链路与终端直通链路间的同频干扰问题，提出一种联合资源分配方案来最大化 D2D链路总能效。 To cope with the co-channel interference between cellular links and device-to-device (D2D) links concurrentlytransmitting with the long term evolution-advanced (LTE-A) uplink spectrum, a joint resource allocation scheme wasproposed to maximize the global energy efficiency of D2D links.
47265 上述问题可分解为功率控制和信道分配 2 个子问题。 The above problem can be decomposed into the powercontrol subproblem and the channel assignment subproblem.