An Algorithm of Searching the Best Receiving Point through the Side-Lobe of the Synchronous Communication Satellite

2013 ◽  
Vol 409-410 ◽  
pp. 1657-1660
Author(s):  
Xin Wang ◽  
Zhen Dong Li ◽  
Zheng Zhang ◽  
Lei Hu
Keyword(s):  
Conventional Method ◽  
Communication System ◽  
Satellite Communication ◽  
Side Lobe ◽  
Synchronous Communication ◽  
Satellite Communication System ◽  
Communication Satellite ◽  
Simulation Results ◽  
Transmitting Antenna ◽  
Antenna Model

Determining how to search for the best receiving point of the satellite ground receiving station is the main objective, when it can only be set in the area where the side lobe of the transmitting antenna in the synchronous satellite covers. The scenario of the synchronous satellite communication system was built with the help of the STK software, the method of building the antenna model was introduced. Based on the scenario, by bringing in the GA, the algorithm of how to search the best receiving point rapidly and accurately was given. The comparison of the simulation results shows that the algorithm of this paper gives a better performance on the time costing and calculation speed than the conventional method, so the algorithm given by this paper has some application value.

Forced-Retransmission Based Hybrid HARQ Scheme for GEO Satellite Communications

2013 ◽  
Vol 846-847 ◽  
pp. 651-654
Author(s):  
Ya Dan Zheng ◽  
Jian Bo Li ◽  
Yong Luo ◽  
Ming Ke Dong ◽  
Jian Jun Wu
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
Satellite Communication ◽  
Satellite Communications ◽  
Hybrid Scheme ◽  
Satellite Communication System ◽  
Geo Satellite ◽  
Simulation Results

In this paper, a hybrid HARQ scheme was proposed by combing forced retransmission and traditional HARQ together, after analyzing the characteristics of satellite channel and the problem encountered when utilizing HARQ scheme in GEO satellite communication system. The forced retransmission can make a packet be correctly decoded more quickly and shorten the waiting delay. Meanwhile, to balance the delay and throughput, the proper parameters were given for the proposed hybrid scheme. Simulation results show that the proposed scheme performs well at decreasing the waiting delay, especially when SNR is low. The conclusion can be drawn that the proposed scheme can improve the HARQ performance in GEO satellite communication systems.

K-band SS/TDMA in Japanese satellite communication system

1982 ◽  
Author(s):  
S. OKASAKA ◽  
M. NAKAMURA ◽  
T. TANAKA ◽  
T. TAKEUCHI ◽  
H. KOMAGATA
Keyword(s):  
Communication System ◽  
Satellite Communication ◽  
Satellite Communication System ◽  
K Band

Bi-directional multimedia satellite communication system using ultrasmall user terminals

2001 ◽  
Vol 48 (5-12) ◽  
pp. 401-409
Author(s):  
Kohei Ohata ◽  
Hideki Toshinaga ◽  
Masayoshi Nakayama ◽  
Kiyoshi Kobayashi ◽  
Hiroshi Kazama
Keyword(s):  
Communication System ◽  
Satellite Communication ◽  
Satellite Communication System
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