Hybrid ARQ Scheme with Intercarrier Interference Mitigation for OFDM Systems

—Based on the principle of spread spectrum systems, this paper presents a hybrid automatic-repeat-request (HARQ) scheme with the mitigation of intercarrier interference (ICI) by orthogonally encoding transmitted signals on subcarriers for orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme not only increases the signal-to-noise ratio (SNR) but also reduces the ICI. Simulations demonstrates that it outperforms the conventional Chase Combining HARQ in terms of uncoded bit error rate (BER) with nearly no complexity increase.

• Type: Conference
• Year: 2008
• Where: WIMOB
• Authors: Rong-Terng Juang, Kun-Yi Lin, Pangan Ting, Hsin-Piao Lin, Ding-Bing Lin
• Keywords: Bit Error Rate, Mobile Computing, Orthogonal Frequency Division Multiplexing, Spread Spectrum Systems, WIMOB 2008