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Comparison of beamforming and diversity approaches for the coverage extension of W-CDMA macro cells

机译:W-CDMA宏观细胞覆盖扩展的波束形成和多样性方法的比较

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Antenna arrays are typically considered as capacity boosters in cellular networks. This paper studies the uplink coverage of different antenna array configurations in the wideband code-division multiple access system (W-CDMA). The paper describes the simulation parameters and discusses the simulation results. The simulations assume a macro cellular propagation environment with relatively narrow angular spread. The results show that antenna arrays at the BS provide a feasible way to improve the uplink coverage of the W-CDMA system. The diversity approach is best suitable for the low mobility environments whereas beamforming is well suited for environments having time and multipath diversity. The worst case environments from the beamforming point of view are those lacking both time and multipath diversity. It can be seen from the results that as the number of antennas increases the beamforming approach becomes more attractive than diversity methods.
机译:天线阵列通常被认为是蜂窝网络中的容量助推器。本文研究了宽带码分多址系统(W-CDMA)中不同天线阵列配置的上行链路覆盖。本文介绍了仿真参数并讨论了仿真结果。仿真假设具有相对窄的角度扩展的宏蜂窝传播环境。结果表明,BS处的天线阵列提供了改善W-CDMA系统的上行链路覆盖的可行方法。多样性方法最适合低移动环境,而波束成形非常适合具有时间和多径多样的环境。来自波束形成的最糟糕的情况是缺乏时间和多径多样性的案例环境。从结果可以看出,随着天线的数量增加,波束形成方法比分集方法变得更具吸引力。

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