CQI Prediction for Shadow Fading in LTE-compatible GEO Mobile Satellite Communications System

2012 ◽  
Author(s):  
Yadan Zheng ◽  
Mingke Dong ◽  
Jianjun Wu ◽  
Ye Jin
Keyword(s):  
Satellite Communications ◽  
Shadow Fading ◽  
Mobile Satellite ◽  
Communications System

CQI Prediction for Shadow Fading in LTE-Compatible GEO Mobile Satellite Communications System

2013 ◽  
Vol 756-759 ◽  
pp. 2137-2141 ◽  
Author(s):  
Ya Dan Zheng ◽  
Ming Ke Dong ◽  
Ye Jin ◽  
Jian Jun Wu
Keyword(s):  
Prediction Models ◽  
Moving Average ◽  
Adaptive Modulation ◽  
Satellite Communications ◽  
Satellite System ◽  
Prediction Performance ◽  
Adaptive Modulation And Coding ◽  
Shadow Fading ◽  
Mobile Satellite ◽  
Communications System

CQI(Channel Quality Indicator) is an essential indicator for AMC(Adaptive Modulation and Coding) technique in LTE. Due to the long delay of GEO satellite channel, CQI prediction is necessary to ensure effective AMC in LTE-compatible GEO mobile satellite communications system. The complete procedure and problem encountered when doing AMC in satellite system are introduced and the difficulties of prediction are analyzed. In order to obtain meaningful and feasible CQI prediction results, a complete prediction scheme is proposed. By using approximate CQI data which is smoothed and with only shadow fading influence, various prediction models are compared. Taking both computation complexity and prediction performance into account, two models, ARIMA (Autoregressive Integrated Moving Average) and Kalman filter are chosen to be applied in this scheme. Simulation results show that the prediction performance is very well with the proposed method, which can surely guarantee AMC performance.

An antenna tracking method for land-mobile satellite communications system

1995 ◽  
Vol 78 (9) ◽  
pp. 91-102 ◽  
Author(s):  
Shin-Ichi Yamamoto ◽  
Kenji Tanaka ◽  
Hiromitsu Wakana ◽  
Singo Ohrnori
Keyword(s):  
Satellite Communications ◽  
Tracking Method ◽  
Mobile Satellite ◽  
Communications System
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