Coded modulation in pre-transformed OFDM systems

Yan Wu, Yuan Li, S. Sun

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


In this paper, we study the coded modulation schemes for pre-transformed (PT) Orthogonal Frequency Division Multiplexing (OFDM) systems, in short PT-OFDM systems. For quasi-static fading channels, we show that the signal to noise ratio (SNR) for different elements in a PT block is constant due to the spreading property of the PT matrix. Based on this observation, we propose trellis coded modulation (TCM) as the better coded modulation scheme for PT-OFDM system compared to bit interleaved coded modulation (BICM). This is further verified by a the BER comparison of coded PT-OFDM systems using different coded modulation schemes through computer simulations.
Original languageEnglish
Title of host publication2005 IEEE 62nd vehicular technology conference, VTC-2005-Fall
Place of PublicationNew York
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Print)0-7803-9152-7
Publication statusPublished - 2005
Externally publishedYes
Event62nd Vehicular Technology Conference (VTC 2005-Fall) - Dallas, TX, United States
Duration: 25 Sep 200528 Sep 2005
Conference number: 62


Conference62nd Vehicular Technology Conference (VTC 2005-Fall)
Abbreviated titleVTC 2005-Fall
CountryUnited States
CityDallas, TX

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