High-Speed Wireline Communication Systems: Semester Wrap-up. Ian C. Wong, Daifeng Wang, and Prof. Brian L. Evans Dept. of Electrical and Comp. Eng. The University of Texas at Austin http://signal.ece.utexas.edu. http://www.ece.utexas.edu/~bevans/projects/adsl. Outline.
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Ian C. Wong, Daifeng Wang, and
Prof. Brian L. Evans
Dept. of Electrical and Comp. Eng.The University of Texas at Austin
1Figures and text are extensively referenced from [ADSL2] [ADSL2white]
 W. H. Mow, “A new unified construction of perfect root-of-unity sequences,” in Proc. Spread-Spectrum Techniques and Applications, vol. 3, 1996, pp. 955–959.
MIMO is multiple-input multiple-output
* impulse-like autocorrelation and zero crosscorrelation
 W. Chen and U. Mitra, "Frequency domain versus time domain based training sequence optimization," in Proc. IEEE Int. Conf. Comm., pp. 646-650, June 2000.
 C. Tellambura, Y. J. Guo, and S. K. Barton, "Channel estimation using aperiodic binary sequence," IEEE Comm. Letters, vol. 2, pp. 140-142, May 1998.
 C. Fragouli, N. Al-Dhahir, W. Turin, “Training-Based Channel Estimation for Multiple-Antenna Broadband Transmissions," IEEE Trans. on Wireless Comm., vol.2, No.2, pp 384-391, March 2003
 C. Tellambura, M. G. Parker, Y. Guo, S . Shepherd, and S . K. Barton, “Optimal sequences for channel estimation using Discrete Fourier Transform techniques,” IEEE Trunsuctions on Communicutions, vol.47, no.2, pp. 230-238, Feb. 1999
[Yu, Ginis, & Cioffi, 2002]
[Cendrillon, Yu, Moonen, Verlinden, & Bostoen, to appear]
7K ftComparison among methods
TxVectored Transmission Methods
K vector of
channel matrix for tone i
uncorrelated componentsUpstream: Successive Crosstalk Cancellation
crosstalk-freeDownstream: MIMO Precoding
* complex conjugation
1Transport Protocol Specific-Transmission Convergence
1 Physical Media Specific-Transmission Convergence
2 Operations, Administration, and Maintenance
[ADSL2] ITU-T Standard G.992.3, Asymmetric digital subscriber line transceivers 2 (ADSL2), Feb. 2004
[ADSL2white] ADSL2 and ADSL2plus-The new ADSL standards. Online: http://www.dslforum.org/aboutdsl/ADSL2_wp.pdf, Mar. 2003
[Wei87] L.-F.Wei, “Trellis-coded modulation with multidimensional constellations,” IEEE Trans. Inform. Theory, vol. IT-33, pp. 483-501, July 1987.
[IMA99] ATM Forum Specification af.phy-0086.001, Inverse Multiplexing for ATM (IMA), Version 1.1., Mar. 1999