On Bandwidth Efficient Coded OFDM using Multilevel Turbo Codes and Iterative Multistage Decoding

On Bandwidth Efficient Coded OFDM using Multilevel Turbo Codes and Iterative Multistage Decoding

In this paper, we present some design methods for bandwidth efficient coded OFDM system. Multilevel turbo coded M-QAM scheme is investigated and some novel strategies are proposed to reduce coding complexities. An iterative multistage decoding with feedback between higher levels and lower ones is co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Zhi Zhang, Binghua Qi, Ping Zhang
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Bandwidth
Convolutional codes
Fading
Fast Fourier transforms
Intersymbol interference
Iterative decoding
Modulation coding
OFDM modulation
Quadrature amplitude modulation
Turbo codes
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Beschreibung
Zusammenfassung:In this paper, we present some design methods for bandwidth efficient coded OFDM system. Multilevel turbo coded M-QAM scheme is investigated and some novel strategies are proposed to reduce coding complexities. An iterative multistage decoding with feedback between higher levels and lower ones is considered to be combined with Turbo decoding, which can improve the overall performance greatly. Several simulation results show that these schemes can provide substantial coding gains with high spectral efficiency.
DOI:10.1109/CHINACOM.2006.344713