LTE多天线技术发展趋势

doi:10.3969/j.issn.1000-0801.2014.10.001

Abstract

Abstract:

Multiple antenna technology is considered as one of the few that has the potential to provide relatively large gains in wireless mobile network. The recent progress of using multiple antenna technology in commercial LTE network in China was discussed. By focusing on LTE-FDD network, details of simulation results and measurements from commercial networks were provided to demonstrate the obtainable gains in the real world when compared with theoretical predictions. Based on the current state of art, an outlook at the future trends of the multiple antenna technology with discussions on road maps, challenges and standard progress was given.

Key words: LTE, multiple antenas, coverage enhancement, massive MIMO

Qi Bi,Weiliang Xie,Peng Chen. Progress and Trends of Multiple Antennas Technology in LTE Network[J]. Telecommunications Science, 2014, 30(10): 1-7.

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References 20

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天线数配置	天线形态
2天线	1列，交叉极化：X
	2列，小间距同极化：\|\|
4天线	2列，每列交叉极化，小间距：XX
	2列，每列交叉极化，大间距：X X
	4列，每列同极化，小间距：\|\|\|\|
8天线	4列，每列交叉极化，小间距：XXXX
	8列，每列同极化，小间距：\|\|\|\|\|\|\|\|
	4列，每列交叉极化，大间距：X X X X
	4列，每列交叉极化，2组小间距阵列间大间距排列：XX XX

天线指标名称	天线指标要求^[^{^{⁹ ^]}}	0.5λ	0.6λ	0.8λ	0.9λ
增益/dBi	≥16.5	15.5	16	16.8	17
水平面波束宽度	65°±6°	77°	73.8°	63.3°	63.1°
垂直面波束宽度	≥7_°	6°	6. °	7°	7°
前后比/dB	≥25	28	29	32	34
轴向交叉极化比/dB	≥15	19.9	16.8	32.5	25.2
±60 °交叉极化比/dB	≥10	7	5.4	17.7	14.9
上旁瓣抑制/dB	≥17	19	13.9	20.4	20.7
驻波比	≤1.5	1.45	1.49	1.29	1.29
隔离度/dB	≥28	30	32	43	41
三阶互调/dBm	≤-107	-95	-100	-117	-114

天线编号	阵列间距	频率范围/MHz	增益/dBi	水平面波束宽度	垂直面波束宽度	内置电下倾
1	10λ	2 500～2 690	17	65°	6°	6°
2	0.5λ	2 500～2 690	15.50	95.50°	6.05°	6°
3	0.8λ	2 500～2 690	17.32	64.46°	5.85°	6°

天线编号	小区平均吞吐量/（Mbit·s^-1）		小区边缘吞吐量/（kbit·s^-1）
天线编号	DL	UL	DL	UL
1	16	13	540	423
2	15	12	500	393
3	16	13	551	445

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Progress and Trends of Multiple Antennas Technology in LTE Network

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