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An Efficient Discrete Bit Allocation Algorithm for Multi-user Channels  

Choi, Min-Ho (전북대학교 대학원 전자공학과)
Song, Sang-Seob (전북대학교 공과대학 전자정보 공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.9A, 2004 , pp. 998-1004 More about this Journal
Abstract
In this paper we propose a discrete bit-loading algorithm that maximizes the transmit bit rate using the channel information. to optimize the performance of the very high-speed digital subscriber line(VDSL) system under the constraint of a maximum transmit power for each user. When the power level of crosstalk is high, the power allocation of a user changes the crosstalk experienced by the other users in the same binder. In this case, the performance of DSL modems can be improved by jointly considering the bit and power allocation of all users Simulation results shows that the proposed method improves the performance compared With that of iterative water-filling method.
Keywords
Bit loading; Water-filling; DMT;
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1 Wei Yu, Wonjong Rhee, Stephen Boyd, John Cioffi, 'Iterative Water-filling for Vector Multiple Access Channels,' IEEE International Symposium on Information Theory, (lSIT), 2001
2 Roger A. Horn, Charles R. Johnson, Matrix Analysis, Cambridge University Press, 1999
3 J. M. Cioffi, 'A multicarrier primer,' ANSI TlE1.4 Committee Contribution, Nov. 1991
4 Wei Yu, G. Ginis, J. M. Cioffi, 'Distributed multiuser power control for digital subscriber lines,' Selected Areas in Communications, IEEE Journal, vol. 20, Issue: 5, pp. 1105 1115, Jun. 2002   DOI   ScienceOn
5 G. Munz, S. Pfletschinger, J. Speidel, 'An efficient waterfilling algorithm for multiple access OFDM,' Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE, vol. 1, 17-21, pp. 681 685, Nov. 2002   DOI
6 T. M. Cover and J. A. Thomas, Elements of information theory, Wiley, 1991
7 R. G. Gallager, Information theory and reliable communications. New York, Wiley, 1968
8 G. D. Forney Jr. and M. V. Eyuboglu, 'Combined Equalization and Coding Usin~ Precoding," IEEE Communications Magazine, 29, Dec. 1991
9 C. Y. Wong, R. S. Cheng, K. B. Letaief, and R. D. Murch, 'Multiuser OFDM with adaptive subcarrier,' bit, and power allocation, IEEE JSAC, vol. 17, no. 10, pp. 1747-1758, Oct. 1999
10 T. Starr, J. M. Cioffi, and P. J. Silverman, UruJerstanding Digital Subscriber Line Technology, Upper Saddle River, NJ: Prentice Hall, 1999
11 R. S. Cheng and S. Verdu, 'Gaussian multiaccess channels with lSI: Capacity region and multiuser water-filing,' IEEE Trans. Inform. Theory, vol. 39, no. 3, pp. 773-785, May 1993   DOI   ScienceOn
12 ANSI Std. T1.417-2001, 'Spectrum Management for Loop Transmission Systems,' Jan. 2001
13 S.N Diggavi, 'Multiuser DMT: A multiple access modualtion scheme,' in Globecomm 1996