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首页> 外文期刊>International Journal of Satellite Communications and Networking >A terabit/second satellite system for European broadband access: a feasibility study
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A terabit/second satellite system for European broadband access: a feasibility study

机译：用于欧洲宽带接入的太比特/秒卫星系统：可行性研究

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摘要

This paper presents a feasibility study for a fixed broadband access High Throughput Satellite terabit/second system by considering appropriate state-of-the-art communication technologies. For the investigated system model, DVB-S2 and DVB-RCS2 are assumed as the air interfaces for the forward and return link, respectively. The performance of DVB-S2 and DVB-RCS2 Adaptive Coding and Modulation is examined along with potential extensions of these standards. For example, the performance of very low rate DVB-RCS turbo codes are investigated and their performance is evaluated. In addition, a performance comparison for M-ary (M＝16, 32, 64) constellations in the presence of a linear and a high power amplifier non-linear channel is carried out. Various frequency reuse schemes and different antenna models are also considered, and their performance is analyzed and evaluated. It is demonstrated that, by using the Q/V (40/50 GHz) bands for the gateways and the Ka (20-30 GHz) band for the user terminals, around 20 gateways and 200 beams are required to provide with the proposed satellite system terabit/second capacity. The obtained performance evaluation results have shown that the forward link is limited by noise rather than interference, whereas the return link is interference limited. Additionally, some further aspects of the system design in relation with the total number of gateways and the payload are discussed.
机译：本文通过考虑适当的最新通信技术，对固定宽带接入高吞吐量卫星兆比特/秒系统进行了可行性研究。对于所研究的系统模型，假定DVB-S2和DVB-RCS2分别作为前向链路和返回链路的空中接口。研究了DVB-S2和DVB-RCS2自适应编码和调制的性能以及这些标准的潜在扩展。例如，研究了极低速率DVB-RCS Turbo码的性能，并评估了它们的性能。此外，在存在线性和高功率放大器非线性信道的情况下，对Mary（M ＝ 16、32、64）星座进行了性能比较。还考虑了各种频率重用方案和不同的天线模型，并对它们的性能进行了分析和评估。事实证明，通过将Q / V（40/50 GHz）频段用于网关，将Ka（20-30 GHz）频段用于用户终端，建议的卫星需要大约20个网关和200个波束系统兆位/秒容量。获得的性能评估结果表明，前向链路受噪声而非干扰的限制，而返回链路受干扰的限制。另外，讨论了与网关总数和有效负载有关的系统设计的其他方面。

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