Method of adaptive spatial coding of signals for non-stationary frequency-selective channels of wireless communication

Authors

  • Liudmyla Pohrebniak Military institute of telecommunications and informatization, Kyiv,, Ukraine
  • Mykola Naumenko Military institute of telecommunications and informatization, Kyiv,, Ukraine

DOI:

https://doi.org/10.20535/2411-1031.2017.5.2.136991

Keywords:

Non-stationary, frequency-selectivity, MIMO, OFDM, spatial coding methods, mobile communication network, broadband access network.

Abstract

General using of orthogonal-frequency multiplexing (OFDM) and multi-element antenna systems (MIMO) in wireless non-stationary frequency selective channels of mobile networks and broadband networks were considered. Methods of spatial block encoding (space-time (STBC), spatial-frequency (SFBC), spatial-frequency with high resistance to non-stationary (WHSTBC-CC) and spatial-frequency with increased resistance to frequency selectivity ( )) were analyzed and conditions for their efficient use were determined. It was shown that methods of spatial block coding are effective only for certain diapason of the values of statistical parameters of non-stationary and frequency selectivity (normalized Doppler frequency shift and mean square delay of signal propagation). The contradiction of the time influence and frequency selectivity on structural-parametric optimization of the technology MIMO-OFDM complicates objectively the development of the universal high-performance spatial encoding method for a wide class of non-stationary frequency-selective channels. The advanced method of adaptive spatial signal coding was proposed in order to increase the speed of the information transfer and quality of users service (reducing the probability of the information transmission error). The essence of the improvement is to integrate the channel noise protection of the channel (signal to noise ratio), normalize the value of the Doppler frequency shift, time and frequency correlation coefficients when determining the optimal situational application of SFBC, STBC, WHSTBC-CC, , that ensure the proper use of non-stationary frequency-selective channels with non-invariant parameters in time. The obtained scientific results can be used for modernization of existing and designing perspective wireless networks.

Author Biographies

Liudmyla Pohrebniak, Military institute of telecommunications and informatization, Kyiv,

postgraduate student

Mykola Naumenko, Military institute of telecommunications and informatization, Kyiv,

doctor of technical sciences, professor,
professor at the transport networks
academic department

References

L. Hanzo, Jos. Akhtman, and Li Wang, MIMO-OFDM for LTE,WiFi, and WiMAX : coherent versus non-coherent and cooperativeturbo-transceivers. United Kingdom: IEEE, 2011.

Y.A. Hepko, V.F. Oleinyk, and Y.D. Chaika, The modern wireless networks: status and perspectives of development, Kyiv, Ukraine: “ЕКМО”, 2009.

M.G. Bakulin, V.B. Kreindelin, А.М. Shola, and А.P. Shumov, Technology OFDM. Moskow, Russia: Hot Line-Telecom, 2016.

S.A. Nizamaldeen, and T.M. Al-Qaradaghi, “A comparison between STBC-OFDM and SFBC-OFDM”, International Journal of Arts and Sciences, vol. 6, no. 5, рр. 157-166, 2014.

H.G. Yeh, ”Architectures for MIMO-OFDM system in frequency selective mobile fading channels”, IEEE Transactions on circuits and systems, vol. 62, no. 12, pp. 1189-1193, 2015.

doi: 10.1109/TCSII.2015.2498300.

A. Al-Dweik, S. Muhaidat, and F. Kalbat, ”Robust MIMO-OFDM system for frequency selective mobile wireless channels”, IEEE transaction on Vehicular Technology, vol. 64, iss. 5, pp. 1-11, 2014.

doi: 10.1109/TVT.2014.2340736.

H. Yeh, Y.K. Chang, and B. Hassibi, ”A scheme for canceling intercarrier interference through conjugate transmission for multicarrier communication systems”, IEEE Trans. Wireless Commun., vol. 6, no. 1, pp. 3-7, 2007.

М.I. Naumenko, and L.M. Pohrebniak, “Advanced method of space-time block coding frequency selective time-varying channels of systems of a military radio communication”, Collection of research papers VITI, no. 1, pp. 81-86, 2017.

N. Lee, and J. Kang, “Adaptive switching between space-time and space-frequency block coded OFDM Systems”, in Proc. IEEE Military Communications Conference, San Diego, pp. 7-13, 2008.

doi: 10.1109/MILCOM.2008.4753221.

A. Omri, R. Hamila, A. Hazmi, R. Bouallegue, and A. Al-Dweik, “Enhanced Alamouti decoding scheme for DVB-T2 systems in SFN channels”, in Proc. IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, Toronto, pp. 2046-2050, 2011.

doi: 10.1109/PIMRC.2011.6139779.

A. Youssefi, N. Bounouader, Z. Guennoun, and J. El. “Adaptive Switching between Space-Time and Space-Frequency Block Coded OFDM Systems in Rayleigh Fading Channel”, International Journal of Communications, Network and System Sciences, no. 6., pp. 316 – 323, 2013.

doi: 10.4236/ijcns.2013.66034.

В. Skliar, Digital communication. Theoretical bases and practical application. Мoskow, Russia: Publishing house “Vyliams”, 2003.

Published

2017-12-31

How to Cite

Pohrebniak, L., & Naumenko, M. (2017). Method of adaptive spatial coding of signals for non-stationary frequency-selective channels of wireless communication. Collection "Information Technology and Security", 5(2), 153–165. https://doi.org/10.20535/2411-1031.2017.5.2.136991

Issue

Section

ELECTRONIC COMMUNICATION SYSTEMS AND NETWORKS