Title :
Joint use of Overlap FDE and STTD for MC-CDMA Downlink Transmission
Author :
Tomeba, Hiromichi ; Takeda, Kazuaki ; Adachi, Fumiyuki
Author_Institution :
Dept. of Electr. & Commun. Eng., Tohoku Univ.
Abstract :
Recently, multi-carrier code division multiple access (MC-CDMA) has been attracting much attention for the next generation mobile communications systems. Using frequency-domain 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 :
code division multiple access; decoding; diversity reception; equalisers; error statistics; least mean squares methods; mobile radio; radio links; BER performance; MC-CDMA downlink transmission; STTD decoding; antenna diversity; bit error rate; frequency diversity effect; frequency-domain equalization; minimum mean square error criterion; multi-carrier code division multiple access; next generation mobile communications systems; overlap FDE; space-time transmit diversity; Bit error rate; Computer simulation; Decoding; Diversity reception; Downlink; Frequency diversity; Mean square error methods; Mobile communication; Multicarrier code division multiple access; Signal generators;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.317
