A Study on Time Variations of Rain Attenuation Characteristics for the Kind of Rain Fronts in Ka Band Satellite Communications

2011 ◽  
Author(s):  
Ryuji Nakajo ◽  
Yasuyuki Maekawa
Keyword(s):  
Satellite Communications ◽  
Rain Attenuation ◽  
Ka Band ◽  
Time Variations ◽  
Attenuation Characteristics

scholarly journals A Systemic Approach to the Compensation of Rain Attenuation in Ka-Band Communication Satellites

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Piero Angeletti ◽  
Marco Lisi
Keyword(s):  
Satellite Communications ◽  
Integrated Approach ◽  
Rain Attenuation ◽  
Systemic Approach ◽  
Band Spectrum ◽  
Effective Solution ◽  
Combined Approach ◽  
Adaptive Compensation ◽  
Ka Band ◽  
Satellite Applications

Rain attenuation at Ka-band is a severe phenomenon that drastically impairs satellite communications at these frequencies. Several adaptive compensation techniques have been elaborated to counteract its effects and most often applied one at a time. The present paper proposes the contemporary exploitation of different techniques in a combined approach. Such an integrated approach is thoroughly analyzed in a simplified scenario and will be shown to achieve a very effective solution, making the Ka-band spectrum fully available for broadband satellite applications and network-centric systems.

Research of Rain Attenuation of Ka-Band Satellite Communication System

2013 ◽  
Vol 433-435 ◽  
pp. 1526-1529
Author(s):  
Li Rong
Keyword(s):  
Communication System ◽  
Satellite Communication ◽  
Meteorological Factors ◽  
Satellite Communications ◽  
Rain Attenuation ◽  
Narrow Beam ◽  
Ka Band ◽  
Satellite Communication System ◽  
Large Bandwidth ◽  
Compensation Methods

Ka-band satellite communication system has some advantages including a large bandwidth, a huge capacity, a narrow beam, a small terminal size, which makes it a trend in future satellite communications. However, the system is now faced with great challenge-meteorological factors, which aroused suspicion among researchers about its realization. In this paper, the feature of rain fade is analyzed and several compensation methods are presented.

A High Efficient and Robust Adaptive Coding and Modulation Algorithm for Ka Band Satellite Communications

2014 ◽  
Vol 568-570 ◽  
pp. 1263-1267 ◽  
Author(s):  
Xiao Tian Zheng ◽  
Ji Lin Li ◽  
Xin Rong Wang
Keyword(s):  
High Speed ◽  
Satellite Communications ◽  
Rain Attenuation ◽  
Ka Band ◽  
Adaptive Coding ◽  
High Efficient ◽  
Link Budget ◽  
High Speed Data ◽  
Robust Adaptive ◽  
Speed Data Transmission

The Ka band for satellite communications is allocated from 27GHz to 40GHz and it is possible to realize the high speed data transmission in this 13GHz bandwidth. However, the attenuation especially the rain attenuation is tremendous for the Ka band. And we need to reserve about 4~8dB link budget to guarantee the typical link reliability 99.9% for the constant coding and modulation (CCM). In this paper, we propose a adaptive coding and modulation (ACM) algorithm that can dynamically change the modulation and code efficiency according to link condition. Based on this algorithm we only need reserve about 1dB to realize the 99.7% reliability. The simulation results show that we can derive more than triple throughout compare to CCM.

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