Practical Demonstration of Limited Feedback Beamforming for mmWave Systems

被引：0
|
作者：
Berraki, Djamal E. [1 ]
Barratt, Thomas H. [1 ]
Beach, Mark A. [1 ]
Armour, Simon M. D. [1 ]
Nix, Andrew R. [1 ]
机构：
[1] Univ Bristol, Commun Syst & Networks, Merchants Ventures Bldg,Woodland Rd, Bristol BS8 1TJ, Avon, England
来源：
2015 IEEE 81ST VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING) | 2015年
关键词：
compressive sensing; sparse signals; codebook; beamforming; mmWave; 60; GHz; channel estimation; multipath;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper presents a practical demonstration of the benefits of limited feedback beamforming for mmWave applications. Different beamforming strategies are presented, analysed and compared. Compressive sensing (CS) is investigated to accurately estimate the sparse Power Angular Profile (PAP) of the mmWave channel. This information is then used to estimate the antenna array weights required to steer the beam to maximise received SNR. This scheme is particularly attractive for outdoor mmWave networks where large antenna arrays are necessary to mitigate high observed pathloss. Codebook based beamforming strategies are also analysed. Using a practical mmWave antenna away, measurements are reported for a controlled multipath channel that compare the performance of the proposed beamforming strategies. In terms of received SNR CS based beamforming was shown to outperform more traditional codebook based solutions by to 5dB.
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页数：5
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