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Journal articles
Exploiting Signal Space Diversity in OFDM With Grouped Subcarriers: Going Beyond Subcarrier Index Modulation
Abstract : We propose a unified approach for orthogonal
frequency-division multiplexing (OFDM) with grouped subcarriers
which encompasses previous schemes such as subcarrier-index
modulation (SIM) and grouped linear constellation-precoding
(GLCP) as particular cases. To exploit signal space diversity
(SSD), we treat the n subcarriers within a group as 2n real
resources. An interleaving at the real component level is used to
break the correlation between adjacent subcarriers. An error
performance analysis then reveals that a 2n-dimensional real
signal constellation (codebook) should be designed according
to the SSD criterion and the multiplicity-to-product distance
ratio criterion. Under certain constraints, the maximum diversity
gain of 2n can be achieved by proper design. We design new
codebooks based on real lattices and show both through computer
simulations and analysis that a superior error performance can
be achieved.
https://hal-cnam.archives-ouvertes.fr/hal-02470216
Contributor : Didier Le Ruyet <>
Submitted on : Friday, February 7, 2020 - 10:19:57 AM
Last modification on : Wednesday, February 26, 2020 - 6:15:13 PM
Contributor : Didier Le Ruyet <>
Submitted on : Friday, February 7, 2020 - 10:19:57 AM
Last modification on : Wednesday, February 26, 2020 - 6:15:13 PM
