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.

SNR Estimation of OFDM Adaptive System in Gauss Channel

2013 ◽  
Vol 760-762 ◽  
pp. 325-328
Author(s):  
Yan Li Shi ◽  
Lin Ren ◽  
Hai Xia Yu ◽  
Yang Song
Keyword(s):  
High Speed ◽  
Adaptive System ◽  
Utilization Rate ◽  
Spectrum Utilization ◽  
Snr Estimation ◽  
Frequency Selective Fading ◽  
High Efficient ◽  
High Speed Data ◽  
Channel Environment ◽  
Speed Data Transmission

The technology of OFDM is a multi-carrier technology, and it is a kind of high efficient modulation technique, it has the ability of strong anti multi-path propagation and frequency selective fading, and higher frequency spectrum utilization rate, this technology is applicable to high speed data transmission in the multi-path and fading channel environment. This paper introduces the basic principle of OFDM adaptive system, and the SNR estimation of OFDM adaptive system in Gauss channel through the simulation, this is a theoretical foundation to practical application in the future.

Analysis of Inter-Satellite Optical Wireless Communication System

2017 ◽  
Vol 7 (10) ◽  
pp. 10
Author(s):  
Rajbir Singh
Keyword(s):  
Wireless Communication ◽  
Optical Networks ◽  
Data Transmission ◽  
High Speed ◽  
Open Space ◽  
Communication Link ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
High Speed Data ◽  
Speed Data Transmission

Optical networks are bandwidth efficient networks are used for long haul communication providing seamless data transfer. For high speed data transmission in open space between different satellites, Inter-satellite Optical wireless communication (IsOWC) is widely used .In this paper we have evaluated the performance of IsOWC communication link for high speed data transmission .The performance of the system is evaluated on the basis of qualitative parameters such as Q-factor and BER using optisystem simulator.

Experimental demonstration of high-speed data transmission based on Gaussian pulses for IR-UWB radio-over-fiber systems

2017 ◽  
Author(s):  
Elizaveta P. Grakhova ◽  
Albert Kh. Sultanov ◽  
Irina L. Vinogradova ◽  
Ivan K. Meshkov ◽  
Anna V. Andrianova ◽  
...  
Keyword(s):  
Data Transmission ◽  
High Speed ◽  
Radio Over Fiber ◽  
Experimental Demonstration ◽  
High Speed Data ◽  
Uwb Radio ◽  
Speed Data Transmission

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.

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