Abstract
A multiuser OFDM system using rate-adaptive codes is described and proposed for the wireless downlink. The code rate is adaptively modified according to the number of active users. The system offers enhanced error protection at partial load. As a result, the bit error rate is reduced and less transmit power is required, reducing the interference level at other cells.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
E. Lawrey, “Multiuser OFDM,” in Proceedings ISSPA’99, pp. 761–764.
Z. Wang and G. B. Giannakis, “Wireless Multicarrier Communications,” IEEE Signal Processing Magazine, pp. 29–48, May 2000.
C. Wong, R. Cheng, K. Letaief and R. Murch, “Multiuser OFDM with adaptive subcarrier, bit and power allocation,” IEEE JSAC, vol. 17, no. 10, pp. 1747–1758, October 1999.
W. Rhee and J. Cioffi, “Increase in capacity of multiuser OFDM system using dynamic subchannel allocation,” in Proc. VTC-Spring, 2000, pp. 1085–1089.
V. Lau, “Performance of variable rate bit interleaved coding for high bandwidth efficiency,” in Proc. VTC 2000, pp 2054–2058.
C. Ibars and Y. Bar-Ness, “Comparing the performance of coded multiuser OFDM and coded MCCDMA over fading channels,” in Proc. Globecom 2001.
R. Wesel and J. Cioffi, “Fundamentals of coding for broadcast OFDM,” in Proc. Asilomar Conf., 1995, pp. 2–6.
R. Knopp and P. Humblet, “On coding for block fading channels,” IEEE Trans. on Information Theory, vol. 46, no. 1, pp. 189–205, January 2000.
S. Benedetto and E. Biglieri, “Principles of Digital Transmission with Wireless Applications,” Kluwer Academic Publishers, 1999.
P. Frenger, P. Orten, T. Ottosson and A. Svensson, “Multi-rate convolutional codes,” Tech. Rep. R021/1998, Chalmers University of Technology, 1998.
R. C. Singleton, “Maximum distance g-nary codes,” IEEE Trans. on Information Theory, vol. IT-10, pp. 116–118, 1964.
J. Hagenauer, “Rate-compatible punctured convolutional codes (RCPC codes) and their applications,” IEEE Trans. on Communications, vol. 36 no. 4, pp. 389–400, April 1988.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Springer Science+Business Media New York
About this chapter
Cite this chapter
Ibars, C., Bar-Ness, Y. (2002). Rate-Adaptive Coded Multiuser OFDM for Downlink Wireless Systems. In: Fazel, K., Kaiser, S. (eds) Multi-Carrier Spread-Spectrum & Related Topics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-3569-7_21
Download citation
DOI: https://doi.org/10.1007/978-1-4757-3569-7_21
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4419-4945-5
Online ISBN: 978-1-4757-3569-7
eBook Packages: Springer Book Archive