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arXiv 1803.07321eess.SPcs.ITmath.IT
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固定和移动卫星通信的高级信号处理技术

Advanced Signal Processing Techniques for Fixed and Mobile Satellite Communications

Pol Henarejos, Ana Pérez-Neira, Nicolò Mazzali, Carlos Mosquera

摘要:

近几十年来,使超快系统得到了广泛的研究。虽然极化从一开始就被部署在卫星通信中,但现在它正被利用来增加卫星链路的吞吐量。更确切地说,将分集技术应用于极化域可以提供可靠、鲁棒和快速的卫星通信。如果传输和接收可以在接近或甚至重叠的频段中同时发生,则还可以更好和更灵活地使用频谱。在本文中,我们研究了新颖的信号处理技术,以提高固定和移动场景中卫星通信的吞吐量。首先,我们调查四维(4D)星座的前向链路。其次,我们专注于移动场景,并介绍了一种自适应算法,它选择最佳的元组的调制阶数,编码速率和MIMO方案,最大限度地提高吞吐量的约束,以最大的分组错误率。最后,我们描述了无线电收发器的操作,其在全双工模式下操作时主动地消除由发射信号造成的自干扰。

英文摘要:

Enabling ultra fast systems has been widely investigated during recent decades. Although polarization has been deployed from the beginning in satellite communications, nowadays it is being exploited to increase the throughput of satellite links. More precisely, the application of diversity techniques to the polarization domain may provide reliable, robust, and fast satellite communications. Better and more flexible spectrum use is also possible if transmission and reception can take place simultaneously in close or even overlapping frequency bands. In this paper we investigate novel signal processing techniques to increase the throughput of satellite communications in fixed and mobile scenarios. First, we investigate four-dimensional (4D) constellations for the forward link. Second, we focus on the mobile scenario and introduce an adaptive algorithm which selects the optimal tuple of modulation order, coding rate, and MIMO scheme that maximizes the throughput constraint to a maximum packet error rate. Finally, we describe the operation of radio transceivers which cancel actively the self-interference posed by the transmit signal when operating in full-duplex mode.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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