Pilot Assisted Channel Estimation for MC-CDMA Signal Transmission Using Overlap FDE
Recently, multi-carrier code division multiple access (MC-CDMA) has been attracting much attention as a broadband wireless access technique for the next generation mobile communications systems. Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can take advantage of the channel frequency-selectivity and improve the average bit error rate (BER) performance due to frequencydiversity gain. However, conventional MC-CDMA requires the insertion of guard interval (GI) and this reduces the transmission efficiency. Overlap FDE technique has been proposed that requires no GI insertion. Recently, we showed that MC-CDMA using overlap FDE can provide almost the same BER performance as the conventional MC-CDMA downlink using the GI insertion. However, our previous work assumed the ideal channel estimation. In this paper, we propose a pilot assisted channel estimation technique suitable for MC-CDMA downlink using overlap FDE and evaluate the BER performance by computer simulation.
component Frequency-selective fading channel overlap FDE Channel estimation MC-CDMA
Hiromichi TOMEBA Kazuki TAKEDA Kazuaki TAKEDA Fumiyuki ADACHI
Dept.of Electrical and Communication Engineering,Graduate School of Engineering,Tohoku University 6-6-05 Aza-Aoba,Aramaki,Aoba-ku,Sendai,980-8579 Japan
国际会议
广州
英文
2008-11-19（万方平台首次上网日期，不代表论文的发表时间）