On decoding and equalization of multidimensional trellis-coded OFDM systems
Resource
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Journal
The 57th IEEE Semiannual Vehicular Technology Conference, 2003
Pages
-
Date Issued
2003-04
Date
2003-04
Author(s)
Liu, Pei-Chun
DOI
1090-3038
Abstract
In this paper, we develop an effective method, multicarrier parallel decision feedback decoding (MC-PDFD), to combat the residual ISI (intersymbol interference) effect in OFDM systems employing multi-dimensional trellis-coded modulation (TCM) scheme. The proposed method operates on reduced-state trellises with modified branch metric in order to accommodate OFDM and other multicarrier communications. MC-PDFD combines the tasks of trellis decoding and equalization altogether and removes the residual ISI simultaneously with decoding process. Simulation results show that MC-PDFD works well in different channel conditions with perfect channel information and degrades slightly with non-perfect channel information.
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Type
journal article
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