Transmitter Preprocessing Assisted MIMO SDMA Systems over Frequency-Selective Channels

  • Shriram Swaminathan
  • Suraj Krishnan
  • Prabagarane Nagaradjane
Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 192)


This paper investigates the performance of multi-user transmitter preprocessing (MUTP) based on singular value decomposition (SVD) technique for multiple input multiple output (MIMO) aided space division multiple access (SDMA) system over correlated and uncorrelated frequency-selective channels with two power allocation regimes, namely ‘water-filling’ and equal power for downlink (DL) communications. Specifically, we study the effects of delay spread distribution of vehicular channel model pertaining to Long Term Evolution (LTE). In multi-user MIMO downlink (DL) communications, users conflict multi-user interference (MUI) as well as multi-stream interference (MSI) which can severely degrade the achievable performance. It is demonstrated with the aid of simulation results that MUTP can yield better achievable bit error rate (BER) by mitigating MUI and MSI and can also obviate the need for employing complex multiuser detectors (MUDs) at the mobile stations (MSs). Further, our simulation study shows that invoking the ‘water-filling’ based power allocation regime results in better achievable capacity.


Multiple input multiple output (MIMO) preprocessing post processing multi-user transmitter preprocessing (MUTP) singular value decomposition (SVD) multi-user interference (MUI) multi-stream interference (MSI) 


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  1. 1.
    Foschini, G.J.: Layered space-time architecture for wireless communication in a fading environment when using multiple antennas. Bell Lab.Tech. J. 1(2), 41–59 (1996)CrossRefGoogle Scholar
  2. 2.
    Verdu, S.: Multi-user Detection. Cambridge University Press, Cambridge (1998)zbMATHGoogle Scholar
  3. 3.
    Vojcic, B., Jang, W.: Transmitter preprocessing in synchronous multi-user communications. IEEE Trans. Commun. 46, 1346–1355 (1998)CrossRefGoogle Scholar
  4. 4.
    Fischer, H.R., Windpassinger, C., Lampe, A., Huber, J.: MIMO precoding for decentralized receivers. In: Proc. IEEE ISIT 2002, p. 496 (2002)Google Scholar
  5. 5.
    Shamai, S., Zaidel, B.M.: Enhancing the cellular downlink capacity via co-processing at the transmitting end. In: IEEE VTS 53rd Vehicular Technology Conference, Spring, Rhodes, Greece, pp. 1745–1749, 6–9 (2001)Google Scholar
  6. 6.
    Spencer, Q.H., Swindlehurst, A.L., Haardt, M.: Zero-forcing methods for downlink spatial multiplexing in multi-user MIMO channels. IEEE Trans. on Signal Processing 52, 461–471 (2004)MathSciNetCrossRefGoogle Scholar
  7. 7.
    Kusume, K., Joham, M., Utschick, W., Bauch, G.: Efficient Tomlinson-Harashima Precoding for spatial multiplexing on flat MIMO channel. In: Proc. IEEE ICC 2005, vol. 3, pp. 2021–2025 (2005)Google Scholar
  8. 8.
    Joham, M., Utschick, W., Nossek, J.A.: Linear transmit processing in MIMO communications systems. IEEE Trans. Signal Process. 53(8), 2700–2712 (2005)MathSciNetCrossRefGoogle Scholar
  9. 9.
    Yang, L.-L.: A Zero-Forcing Multi-user Transmitter Preprocessing Scheme for Downlink Communications. IEEE Trans. Commun. 56(6) (2008)Google Scholar
  10. 10.
    Liu, W., Yang, L.L., Hanzo, L.: SVD Assisted Joint Transmitter and Receiver Design for the Downlink of MIMO Systems. In: IEEE Vehicular Technology Conference, Spring (2008)Google Scholar
  11. 11.
    3GPP (TR 36.803), Evolved universal terrestrial radio access (E-UTRA); user equipment (UE) radio transmission and reception (Release 8). Technical Specification, Sophia Antipolis, France (2007)Google Scholar
  12. 12.
    Telatar, I.E.: Capacity of multi-antenna Gaussian channels. European Transactions on Telecommunications 10, 585–595 (1999)CrossRefGoogle Scholar
  13. 13.
    Vucetic, B., Yuan, J.: Space-Time Coding. Wiley, Chichester (2003)CrossRefGoogle Scholar
  14. 14.
    Morelli, M., Sanguinetti, L.: A novel prefiltering technique for downlink transmissions in TDD MC-CDMA systems. IEEE Transactions on Wireless Communications 4, 2064–2069 (2005)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Shriram Swaminathan
    • 1
  • Suraj Krishnan
    • 1
  • Prabagarane Nagaradjane
    • 1
  1. 1.Department of Electronics and CommunicationSSN InstitutionsChennaiIndia

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