A practical throughput comparison of MIMO-CDMA and MIMO-OFDM

Author

Abe, Tetsushi ; Asai, Takahiro ; Suda, Hirohito

Author_Institution

Wireless Labs., NTT DoCoMo. Inc., Kanagawa, Japan

Volume

2

fYear

2004

fDate

26-29 Sept. 2004

Firstpage

1431

Abstract

This paper describes a realistic capacity comparison of MIMO-CDMA and MIMO-OFDM schemes, by taking account of several practical factors, such as actual modulation and channel coding, channel estimation error, spectrum loss due to band-pass filtering, and power loss due to pilot and control signal insertion. In the comparison, we employ the system parameters discussed in the 3^rd generation partnership project (3GPP). We also introduce a pilot and control cancellation scheme for practical consideration in MIMO-CDMA. Computer simulation results clarify that MIMO-OFDM achieves higher capacity in the high SNR region by about 1.2 bps/Hz, 2.5 bps/Hz, and 5.0 bps/Hz for average SNR values of 15 dB, 20 dB, and 30 dB, respectively. The effectiveness of the pilot and control cancellation scheme is also confirmed by a computer simulation.

Keywords

3G mobile communication; MIMO systems; OFDM modulation; band-pass filters; channel capacity; channel coding; channel estimation; code division multiple access; 3GPP; MIMO-CDMA; MIMO-OFDM; band-pass filtering; channel capacity; channel coding; channel estimation error; control cancellation scheme; control signal insertion power loss; high SNR region; pilot cancellation scheme; pilot signal insertion power loss; spectrum loss; system throughput; Channel estimation; Computer simulation; Error correction; Laboratories; MIMO; Multiaccess communication; OFDM; Silicon carbide; Throughput; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th

ISSN

1090-3038

Print_ISBN

0-7803-8521-7

Type

conf

DOI

10.1109/VETECF.2004.1400260

Filename

1400260