Journal
IEEE COMMUNICATIONS LETTERS
Volume 12, Issue 12, Pages 871-873Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2008.081197
Keywords
Orthogonal frequency division multiplexing (OFDM); signal constellation; minimum Euclidean distance
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Funding
- Korea government (MEST) [R01-2008-000-12283-0]
- National Research Foundation of Korea [R01-2008-000-12283-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this letter, a novel orthogonal frequency division multiplexing (OFDM) is introduced. Here, a three-dimensional (3-D) signal mapper and two-dimensional (2-D) inverse discrete Fourier transform are used to allocate 3-D signals to OFDM subchannels and to modulate the signals, respectively. The minimum Euclidean distance of the 3-D mapper is much farther than that of the 2-D mapper if both mappers consisting of the same number of signal points are normalized to have the same average power. As a result, the proposed OFDM has significantly improved error performance when compared to the conventional one.
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