Abstract
In the emerging 60 GHz millimeter-wave communications, the beam-forming technique has been widely recommended to efficiently compensate the significant path-loss in such bands. Unfortunately, the complexity of beam searching procedure, which is used to find the optimal beam-pair from a prescribed codebook, may generally tend to be unaffordable with the increasing of antenna elements. By formulating the beam-searching as a numerical optimization problem and properly exploring the beam characteristics generated by different array element numbers, the article proposed a fast beam searching algorithm. Compared with the existing schemes in current standards, our algorithm can significantly reduce the preamble transmissions accompanying energy consumption during beam searching process. Numerical simulation results further validate the superiority of the presented algorithm.
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Abbreviations
- BF:
-
Beam-forming
- BRP:
-
Beam refinement procedure
- CSI:
-
Channel state information
- EBW:
-
Efficient beam width
- GRS:
-
Global refinement search
- ISS:
-
Initiator sector sweep
- ISWR-P:
-
Improved SWR-P
- ISWR-R:
-
Improved SWR-R
- LOS:
-
Line-of-sight
- mmWave:
-
Millimeter-wave
- NLOS:
-
Non-line-of-sight
- PHY:
-
Physical layer
- RS:
-
Refinement search
- RSS:
-
Responder sector sweep
- SLS:
-
Sector level sweep
- SNR:
-
Signal-to-noise ratio
- SWR:
-
Step-wisely refinement
- SWR-P:
-
SWR with powell method
- SWR-R:
-
SWR with rosenbrock method
- TG:
-
Task group
- WPAN:
-
Wireless personal area networks
- WLAN:
-
Wireless local area networks
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Acknowledgments
This work was supported by NSFC (61171104), the Fundamental Research Funds for the Central Universities (G470712).
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Zou, WX., Du, GL., Li, B. et al. Step-Wisely Refinement Based Beam Searching Scheme for 60 GHz Communications. Wireless Pers Commun 71, 2993–3010 (2013). https://doi.org/10.1007/s11277-012-0985-8
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DOI: https://doi.org/10.1007/s11277-012-0985-8