scholarly journals Multicarrier digital pre-distortion/ equalization techniques for non-linear satellite channels

2012 ◽  
Author(s):  
Roberto Piazza ◽  
Bhavani Shankar ◽  
Daniel R ◽  
Joel Grotz ◽  
Frank Zimmer ◽  
...  
Keyword(s):  
Non Linear ◽  
Satellite Channels

scholarly journals Multiple-input multiple-output symbol rate signal digital predistorter for non-linear multi-carrier satellite channels

2015 ◽  
Vol 9 (16) ◽  
pp. 2053-2059 ◽  
Author(s):  
Efrain Zenteno ◽  
Daniel Rönnow ◽  
M.R. Bhavani Shankar ◽  
Roberto Piazza ◽  
Björn Ottersten
Keyword(s):  
Multiple Input Multiple Output ◽  
Symbol Rate ◽  
Multiple Input ◽  
Non Linear ◽  
Input Multiple Output ◽  
Output Symbol ◽  
Satellite Channels ◽  
Digital Predistorter

scholarly journals Design of Nonequiprobable High-Order Constellations over Non-Linear Satellite Channels

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 123
Author(s):  
Weigang Chen ◽  
Yu Peng ◽  
Changcai Han ◽  
Jinsheng Yang
Keyword(s):  
Communication Systems ◽  
Mapping Method ◽  
Linear Mapping ◽  
High Order ◽  
Bandwidth Efficiency ◽  
Performance Improvements ◽  
Non Linear ◽  
Satellite Channels ◽  
Linear Effects ◽  
Simulation Results

High-order modulations are essential to improve the bandwidth efficiency of communication systems. However, such modulated signals with large envelopes are typically sensitive to the non-linear distortion caused by high power amplifiers (HPAs) in the transponder of satellite channels. In this paper, a new nonequiprobable constellation is designed to combat the non-linear effects of HPAs. We use non-uniformly distributed symbols to construct the appropriate high-order constellation for non-linear satellite channels. The nonequiprobable symbols are generated using the non-linear mapping method, which specifically consists of expansion mapping, symbol decomposition, permutation, and combination. Moreover, the demapping method adapting to the designed nonequiprobable constellation is also discussed. The simulation results show that the proposed scheme has considerable performance improvements compared with the traditional equiprobable constellations over the non-linear satellite channel.

scholarly journals Turbo Equalization of Non-Linear Satellite Channels Using Soft Interference Cancellation

2008 ◽  
Author(s):  
D. Ampeliotis ◽  
A. A. Rontogiannis ◽  
K. Berberidis ◽  
M. Papaleo ◽  
Giovanni E. Corazza
Keyword(s):  
Interference Cancellation ◽  
Turbo Equalization ◽  
Non Linear ◽  
Satellite Channels
Sign in / Sign up

Export Citation Format

Share Document