Reduction of Phase Noise Effects for OFDM Signals

• Main Authors: Hsiao-Chen Wang, 汪曉貞
• Other Authors: Szu-Lin Su
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/82756094978471677351

碩士 === 國立成功大學 === 電腦與通信工程研究所 === 96 === We hope that using block pilots can estimate inter-carrier interference caused by phase noise. The effect of phase noise is random process. We need to lower code rate to decrease the effect of phase noise .The theory in one reference will loss bandwidth efficiency in OFDM system by changing the code rate into half to solve the phase noise effect. The theory in the other reference compensates common phase error term (CPE) only and do not care about inter-carrier interference term (ICI term). Our proposed theory can estimate common phase error term and ICI term by using block pilots. Although code rate may be lower the number of interaction may be increased. We will have better performance in OFDM system by solving the problem in inter-carrier interference caused by phase noise.