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首页> 外文会议>2013 3rd International Conference on Consumer Electronics, Communications and Networks >Quasi-equal-phase beam compositing algorithm in multi-beam satellite systems
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Quasi-equal-phase beam compositing algorithm in multi-beam satellite systems

机译：多波束卫星系统中的准等相波束合成算法

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摘要

In multi-beam satellite systems, users suffer from 3dB power attenuation in beam-edge area. Joint transceiving can be used to improve this situation. It requires signals of several beams (downlink) or several users (uplink) to be equal-phase, which needs channel estimation and seems to be complex. The purpose of this paper is to reduce complexity of joint transceiving by compositing quasi-equal-phase beams. Firstly, radiation pattern of original component beams are discussed and calculated. Then a modified Least Mean Square (LMS) algorithm is presented to composite quasi-equal-phase beams from component beams calculated above. Lastly a numerical calculation is presented to show that quasi-equal-phase beams are composited with phase error smaller than 0.32 radian.
机译：在多波束卫星系统中，用户在波束边缘区域会遭受3dB的功率衰减。联合收发可以用来改善这种情况。它要求几个波束（下行链路）或几个用户（上行链路）的信号是同相的，这需要进行信道估计并且看起来很复杂。本文的目的是通过合成准等相位光束来降低联合收发的复杂性。首先，讨论并计算了原始分量光束的辐射方向图。然后，提出了一种改进的最小均方（LMS）算法，用于从以上计算的分量光束合成准等相位光束。最后进行了数值计算，结果表明合成出的准等相位光束的相位误差小于0.32弧度。

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