Method of Iterative Single-Channel Blind Separation for Qpsk Signals

Автор(и)

  • Vasily Yuriyovych Semenov Scientific and Production Enterprise «Delta SPE», Kiev, Україна

DOI:

https://doi.org/10.32626/2308-5878.2018-17.108-116

Анотація

A method for single-channel blind separation of two QPSK (quadrature phase shift keying) signals is proposed. The method is based on the iterative maximization of a posteriori probability for mixture's components. The relations for a posteriori probabilities are derived and on its basis the iterative algorithm for the estimation of mixture's components is developed. The algorithm for the estimation of channel parameters (amplitudes, phases, time delays) is also developed. The effectiveness of method is demonstrated for various noise levels and time diversities between channels. The proposed parameters’ estimation procedure provides significant reduction of bit error rate (BER) over the case of unknown parameters.

Посилання

Wu C. Single-Channel Blind Source Separation of Co-Frequency Overlapped GMSK Signals Under Constant-Modulus Constraints / C. Wu, Z. Liu, X. Wang, W. Jiang, X. Ru // IEEE Communications Letters. — March 2016. — Vol. 20. — № 3. — P. 486–489.

Gouldieff V. MISO Estimation of Asynchronously Mixed BPSK Sources / V. Gouldieff, J. Palicot // Proc. IEEE Conf. EUSIPCO. — 2015. — P. 369–373.

Arulampalam M. S. Particle-Filtering-Based Approach to Undetermined Blind Separation / M. S. Arulampalam, S. Maskell, N. Gordon, T. Clapp // Advances in information Sciences and Service Sciences. — 2012. —Vol. 4. — P. 305–313.

Pan B. Blind Separation of Two QPSK Signals Based on Lattice Reduction / B. Pan and S. Tu // 2017 International Conference on Information Science and Con-trol Engineering (ICISCE). — Changsha, 2017. —P. 1437–1440.

Warner E. Single-channel blind signal separation of filtered MPSK signals / E. S. Warner, I. K. Proudler // IEE Proceedings — Radar, Sonar and Navigation. — 2003. — Vol. 150. — № 6. — P. 396–402.

Shilong T. Single-channel blind separation of Two QPSK signals using persurvivor processing / Tu Shilong, Zheng Hui, Gu Na // Pro APCCAS. — 2008. — Macao. — P. 473–476.

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Опубліковано

2018-05-24

Номер

2018: Математичне та комп'ютерне моделювання. Серія: Фізико-математичні науки. Випуск 17

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