Abstract
In this paper, a photonic based pre-coding for multiple input multiple output (MIMO) satellite communication is realized without digital signal processing (DSP) structure. It should be noted that when the microwave signal transmits through the wireless channel, the distortion is inevitable. Usually, the zero force (ZF) algorithm is considered to mitigate the distortion that introduced by the atmosphere and it is always realized through DSP. Here, we present an all-optical pre-coding structure that may perform the same function of DSP to realize ZF algorithm. The simulation result shows that, the eye diagram shows a clear “eye” and the bit error rate (BER) is about 2.13503E-7, the system capacity is about 0.4276 after using the proposed photonic pre-coding structure. In addition, the influence of the non-ideal parameters on the photonic pre-coding structure is also investigated. The performance of the system is sensitive to the variation of the desired parameters.
Highlights
Satellite communication plays an important role in fulfilling generation 5G communication systems [1]
In order to investigate the photonic based Multiple input multiple output (MIMO) satellite communication system with higher frequency bands such as Ka band under condition of clear environment, we set a MIMO communication link according to the scenario and the parameters values that illustrated in Ref. [19]
The simulated 2 × 2 MIMO satellite system is previously verified in Ref. [24]
Summary
Satellite communication plays an important role in fulfilling generation 5G communication systems [1]. Multiple input multiple output (MIMO) technology, as the key technology of 5G, its exploitation in satellite is a significant technical breakthrough in modern satellite communications due to the advantages of high data rates with low cost of extra spectrum and transmission power [2], [3]. In order to support the generation high speed satellite mobile communication system, the satellite MIMO system working in the higher frequency bands are significantly needed. Microwave photonics satellite payload was proposed [4]–[7]. It generates, transmits, and processes microwave signals in optical domain to overcome the bottleneck problems in electrical techniques. The key techniques in microwave photonics satellite payload have been achieved [8]–[11]
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