Efficient adaptive modulation and power allocation algorithm for OFDMA cellular systems

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9 Citations (Scopus)

Abstract

An adaptive transmission scheme using QAM and LDPC code is proposed for an OFDMA cellular system employing FDD. Also, adaptive algorithms for active user selection, subchannel transmission power allocation, and modulation and coding set selection are proposed. The performance of the proposed scheme is obtained from computer simulation and is compared with that of the conventional scheme using mean SNR only. It is shown that the proposed scheme can provide up to 5.1dB gain over the conventional scheme at the expense of only 3 more bits in feedback information.

Original languageEnglish
Title of host publication2005 Wireless Telecommunications Symposium, WTS
Pages169-173
Number of pages5
DOIs
Publication statusPublished - 2005 Dec 1
Event2005 Wireless Telecommunications Symposium, WTS - Pomona, CA, United States
Duration: 2005 Apr 282005 Apr 30

Publication series

Name2005 Wireless Telecommunications Symposium, WTS
Volume2005

Other

Other2005 Wireless Telecommunications Symposium, WTS
CountryUnited States
CityPomona, CA
Period05/4/2805/4/30

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kim, K. S. (2005). Efficient adaptive modulation and power allocation algorithm for OFDMA cellular systems. In 2005 Wireless Telecommunications Symposium, WTS (pp. 169-173). [1524783] (2005 Wireless Telecommunications Symposium, WTS; Vol. 2005). https://doi.org/10.1109/WTS.2005.1524783