Efficient adaptive modulation and power allocation algorithm for OFDMA cellular systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)


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
Number of pages5
Publication statusPublished - 2005
Event2005 Wireless Telecommunications Symposium, WTS - Pomona, CA, United States
Duration: 2005 Apr 282005 Apr 30

Publication series

Name2005 Wireless Telecommunications Symposium, WTS


Other2005 Wireless Telecommunications Symposium, WTS
Country/TerritoryUnited States
CityPomona, CA

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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