Joint use of Overlap FDE and STTD for MC-CDMA Downlink Transmission

— Recently, multi-carrier code division multiple access (MC-CDMA) has been attracting much attention for the next generation mobile communications systems. Using frequencydomain equalization based on minimum mean square error criterion (MMSE-FDE), the frequency diversity effect can be obtained and improved bit error rate (BER) performance can be obtained. Antenna diversity is an effective technique to further improve the BER performance. Space-time transmit diversity (STTD) is suitable for the downlink transmission. Recently, overlap FDE that requires no guard interval (GI) insertion are presented. Combining STTD decoding and overlap FDE is not straightforward. In this paper, we propose STTD decoding for the MC-CDMA transmission using overlap FDE and then, its BER performance is evaluated by computer simulation. Keywords-component; Frequency-selective fading channel, overlap FDE, STTD, MC-CDMA.

• Type: Conference
• Year: 2007
• Where: VTC
• Authors: Hiromichi Tomeba, Kazuaki Takeda, Fumiyuki Adachi
• Keywords: BER Performance, Multi-carrier Code Division Multiple Access, Overlap Fde, VTC 2007