Notice of Violation of IEEE Publication Principles: Adaptive modulation for fading channels

Abstract

Notice of Violation of IEEE Publication Principles<br><br>"Adaptive Modulation for Fading Channels,"<br>by Jiayue Tang, Jie Wang,<br>in the Proceedings of the 2000 IEEE Asia-Pacific Conference on Circuits and Systems, 2000, (APCCAS 2000), pp.58-61, December 2000<br><br>After careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.<br><br>This paper contains significant portions of original text from the paper cited below. The original text was copied without attribution (including appropriate references to the original author(s) and/or paper title) and without permission.<br><br>Due to the nature of this violation, reasonable effort should be made to remove all past references to this paper, and future references should be made to the following article:<br><br>"Adaptive Modulation and Scheduling for Fading Channels,"<br>by N.C. Ericsson,<br>in the Proceedings of the 1999 Global Telecommunications Conference, 1999. GLOBECOM '99 vol.5, pp. 2668-2672 <br><br> <br/> In future packet based wireless communication systems, transmission in the downlink will often dominate the traffic load. High bit-rate applications like WWW-browsing, file transfer, and full motion video will impose strong requirements on the system capacity. An obstacle in this context is the time-variability of the channel: for mobile users, frequently occuring fading dips will cause unnecessary, and capacity degrading, retransmissions. To achieve a high throughput also over fading channels, adaptive methods for adjustment of e.g. the modulation alphabet, and the coding complexity, can be used. The idea is to make efficient use of the bits: whenever channel conditions are adequate, transmission of redundant bits should be avoided. We investigate the effect of adaptive modulation in a scenario involving one mobile and one base station.