一種基于特征值分布的波束賦形方案
A Beamforming Scheme Based on Eigenvalue Distribution
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摘要: 該文分析了在不同角度擴(kuò)展和DOA情況下的特征值分布，研究了在不同角度擴(kuò)展環(huán)境下不同波束賦形算法的性能。在此基礎(chǔ)上，提出了一種基于特征值分布的波束賦形方案。該方案根據(jù)信道的特征值分布自適應(yīng)地采用不同波束賦形算法。仿真表明，該方案與PPPW(Per-Path Per-Weight)波束賦形算法性能相近，同時(shí)大大降低計(jì)算復(fù)雜度。
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關(guān)鍵詞:
- 智能天線; 特征值分布; 角度擴(kuò)展; DOA
Abstract: This paper firstly analyzes the eigenvalue distribution in environment with different angle spread and DOA. Secondly, the performance of different beamforming algorithms are investigated first in diverse environment. Then a beamforming scheme based on eigenvalue distribution is proposed, which can adaptively utilize different beamforming algorithm according to the eigenvalue distribution. Simulation results show that the proposed method possesses almost the same performance as the Per-Path Per-Weight(PPPW) beamforming method, furthermore the complexity is reduced greatly. -
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