Advanced CI/OFDM System Robust to the Phase Noise

다국어 초록 (Multilingual Abstract)

High PAPR (peak-to-aver age power r atio) and ICI (inter car r ier inter ference) ar e ser ious problems in the OFDM (or thogonal frequency division multiplexing) system. Recently, CI/OFDM (car r ier inter ferometry coded OFDM) system has been proposed for reducing the PAPR and it shows good PAPR r eduction per formance. However , the CI/OFDM system is very sensitive to the ICI (inter car r ier inter ference) problem since the phase offset mismatch happens due to the frequency offset and phase noise. In this paper , we propose an ACI/OFDM (advanced-CI/OFDM) to simultaneously handle the PAPR and ICI problems for the over all BER per formance improvement. This method basically incr eases the mar gin of phase offset in CI codes. Even though it shows a little bit higher PAPR than conventional CI/OFDM, but it impr oves the total BER per formance. From the simulation r esults, we can show the per formance compar ison between the conventional OFDM, CI/OFDM and ACI/OFDM.

목차 (Table of Contents)

• Abstract
• Ⅰ. INTRODUCTION
• Ⅱ. PAPR AND PHASE NOISE PROBLEMS
• Ⅲ. CI/OFDM SYSTEM AND ANALYSIS
• Ⅳ. PROPOSED ACI/OFDM SYSTEM
• Ⅴ. SIMULATION RESULTS AND DISCUSSION
• Ⅵ. CONCLUSION
• REFERENCES