Differential ISI Cancellation for TDS-OFDM

Dengbao DU  Jintao WANG  Jun WANG  Ke GONG  Zhixing YANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E93-B   No.1   pp.207-210
Publication Date: 2010/01/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.207
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
inter-symbol interference (ISI),  time domain synchronous orthogonal frequency division multiplexing (TDS-OFDM),  Viterbi decoder,  

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Summary: 
A differential inter-symbol interference (ISI) cancellation method for time domain synchronous orthogonal frequency division multiplexing (TDS-OFDM) systems is proposed. The differential output of an OFDM system can greatly reduce the impact of ISI in the frequency domain and it constructs a convolutional structure, thus the Viterbi decoding algorithm can be used to recover the transmitted information from the output signal. Simulation results show the effectiveness of the proposed method.