Iterative Joint Channel Estimation and Signal Detection for OFDM System in Double Selective Channels

作者：Jan, Yih-Haw^*

来源：Wireless Personal Communications, 2018, 99(3): 1279-1294.

DOI：10.1007/s11277-017-5184-1

• OFDM
• Iterative method
• Joint channel estimation and signal detection
• Linear approximation channel model

Intercarrier interference caused by fast time-varying multipath fading channels degrades the system performance of high-mobility orthogonal frequency division multiplexing systems. This study considers the challenging problem of joint channel estimation and signal detection in high mobility environments. The estimation method is based on a pilot-aided linear approximation channel modeling and iterative process. After each iteration, the channel estimates are refined with the fed-back detection signal. The channel is re-estimated iteratively, detected increasingly reliable signals. The proposed method is independent of the Doppler-spectrum, delay-profile shape and the number of paths. Numerical simulation results indicate that the proposed method is highly robust to fast time-varying multipath fading channels.

• 出版日期2018-4
• 单位南开大学