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題名 | 應用於下世代行動通信陣列天線波束合成之適應性演算法技術研究=Research on Adaptive Beamforming Algorithms of Antenna Array for Next Generation Mobile Communication System |
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作 者 | 黃旭章; | 書刊名 | 新新科技年刊 |
卷期 | 11 2015.01[民104.01] |
頁次 | 頁108-118 |
分類號 | 448.813 |
關鍵詞 | 陣列天線; 適應性波束合成; 適應性演算法; 正規化最小均方演算法; 遞迴式最小平方演算法; 可變步階參數正規化最小均方; Antenna array; Adaptive beamforming; Adaptive algorithm; Normalized least mean square (NLMS) algorithm; Recursive least square algorithm; Variable step-size; NLMS; |
語文 | 中文(Chinese) |
中文摘要 | 下世代通信系統(5G)將朝向較高傳輸速率發展,對於下世代行動通信系統而言,高頻段毫米波是一個非常具吸引力及發展性的技術,由於它可提供超過GHz以上之可用頻寬來達到每秒兆位元的數據傳輸速率。但毫米波通信使用較高的載波頻率,因自由空間傳輸損耗與訊號衰減較大,導致傳輸距離受限。因此,此應用需要高增益指向性天線及可控制陣列天線波束之適應性波束合成技術,以補償高傳播損耗。在陣列天線中,適應性波束合成架構是基於使用適應性訊號處理演算法來產生空間指向性波束。其主要目的為將主波束對準期望訊號的到達方向,使高增益波束始終保持對準期望訊號,同時將零陷對準干擾訊號的到達方向,以達到抑制干擾訊號及提升系統抗干擾能力之目的。在此情況下,系統能提供一個最大訊號雜訊干擾比效果的波束場型。 |
英文摘要 | Next generation obile communication (5G) will tend to as the development of higher data rates. For next generation mobile communication, high frequency millimeter wave (mmWave) is a very attractive and promising technology because it can provide more than 1 GHz high-bandwidth available to support gigabit-per-second (Gbps) data rates. However, theemployment of the higher carrier frequency in the mmWave communication makes free-space transmission loss and signal attenuation very high. Consequently, it would result in restricted transmission distance. Therefore, this application necessitates high-gain directional antenna and adaptive beamforming technology of steerable antenna array beams to compensate for the high propagation loss. Adaptive beamforming technology is based on using adaptive signal processing algorithms to produce spatial and directional beam in antenna array. The primary purpose is that the main beam aims at the coming direction of desired signal and always maintains desired signal at the maximum gain. Simultaneously, null points to the coming direction of interference signal. Hence, the source of interference signal will be restrained and the anti-noise ability of the system is remarkably developed. At this state, the system can produce a beam pattern of maximum signal-to-interference-plus-noise ratio (SINR). |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。