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Modified Blind Signal Processing Technque used in the Direct Conversion Receiver for Satellite Communications
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- Authors
- Keun Pyo Hong, Joon Gyu Ryu, Ho Kyom Kim
- Issue Date
- 2007-07
- Citation
- International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC) 2007, pp.552-553
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper introduces the modified blind signal processing to regenerate I/Q signals based on Constant Modulus Algorithm for direct conversion receiver and the performance using MATLAB simulations. Also This paper represents the conventional three blind signal processing techniques, Singular Value Decomposition(SVD), Independent Component Analysis(ICA), and Constant Modulus Algorithm(CMA). CMA technique also has phase error, but regenerates the reliable I/Q data. Therefore we suggest modified regeneration algorithm to compensate phase error using phase information of the received signal. It is shown that the constellation performance of suggested regeneration algorithm is similar to conventional QPSK, 8PSK using computer simulation and the regenerated constellation is similar to the transmitted signal constellation without phase distortion.
- KSP Keywords
- Blind signal processing, Computer simulation(MC and MD), Constant Modulus Algorithm(CMA), Constellation performance, Direct conversion receiver, Independent Component analysis, Matlab Simulation, Phase distortion, Phase information, phase error, satellite communication