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Massive MIMO多小区系统中导频污染减轻方法
Massive多输入多输出 多小区系统 导频污染 小区交叉分类 功率控制
2017/12/27
Massive多输入多输出(multiple-input multiple-output, MIMO)多小区系统时分双工(time division duplex,TDD)模式中,导频训练序列在小区间是复用的,小区间不正交的导频序列会造成严重地导频污染,从而降低信道估计和预编码的准确性,成为系统性能提升的瓶颈。针对此问题,提出基于小区交叉分类正交识别和上行导频功率控制的导频污染减轻方法。对所有小区...
Achieving "Massive MIMO" Spectral Efficiency with a Not-so-Large Number of Antennas
Channel training downlink scheduling frequency reuse inter-cell cooperation large-system analysis
2011/9/15
Abstract: The main focus and contribution of this paper is a novel network-MIMO TDD architecture that achieves spectral efficiencies comparable with "Massive MIMO", with one order of magnitude fewer a...
Abstract: We consider a multicell MIMO uplink channel where each base station (BS) is equipped with a large number of antennas N. Recent work has shown that, as N grows infinitely large, (i) the simpl...