High Altitude Platform-Based Communication System under LDPC Coding in DVB-S2 Standard

2014 ◽  
Vol 602-605 ◽  
pp. 3687-3692
Author(s):  
Jian Yun Zheng ◽  
Kai Ji ◽  
Yi Sheng Zhu
Keyword(s):  
Statistical Model ◽  
High Altitude ◽  
Communication System ◽  
Communication Channel ◽  
Numerical Results ◽  
Code Length ◽  
High Altitude Platform ◽  
Modulation Methods

The statistical model is used for analyzing the characteristic of the HAP-based communication channel, the structure and algorithm of LDPC encoding and decoding in DVB-S2 are studied, the LDPC BICM system over the HAP-based communication channel are established. Numerical results show the effects of different code length and coderate under different modulation methods.

The Performance of Double-Binary Turbo Codes in the HAP-Based Communication System

2015 ◽  
Vol 713-715 ◽  
pp. 1141-1144
Author(s):  
Jian Yun Zheng ◽  
Li Li ◽  
Yi Sheng Zhu
Keyword(s):  
Communication System ◽  
Turbo Codes ◽  
Fading Channel ◽  
Communication Channel ◽  
Numerical Results ◽  
Small Scale

The small-scale fading model for HAP-based communication channel is analyzed, the structure and algorithm of double-binary Turbo encoding and decoding are studied. Numerical results show the BER performance with different interleaving depth and interleaving length of double-binary Turbo codes using QPSK modulation over Rayleigh fading channel.

A 2 × 20 Gbps hybrid MDM-OFDM–based high-altitude platform-to-satellite FSO transmission system

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Vel Murugan Gomathy ◽  
T. V. Paramasivam Sundararajan ◽  
C. Sengodan Boopathi ◽  
Pandiyan Venkatesh Kumar ◽  
Krishnamoorthy Vinoth Kumar ◽  
...  
Keyword(s):  
High Altitude ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Satellite Communication ◽  
Input Power ◽  
Transmission System ◽  
Communication Link ◽  
Space Optics ◽  
High Altitude Platform ◽  
Mode Division Multiplexing

AbstractIn the present study, the application of free space optics (FSO) transmission system to realize a long-reach high-altitude platform (HAP)-to-satellite communication link has been exploited. High-speed information transmission without interference is accomplished using orthogonal frequency division multiplexing (OFDM). Further, the information capacity of the proposed system is increased by employing mode division multiplexing (MDM). We have investigated the proposed MDM-OFDM-HAP-to-satellite FSO transmission system performance over varying FSO range, diameter of the receiver, pointing errors, and input power. Also, an improved transmission performance of the proposed system using a square root module is reported.

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