An Improved MIMO PCC OFDM System with Reduced Sensitivity to Imperfect CSI

Author

Li, Xia ; Armstrong, Jean

Author_Institution

Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Melbourne, VIC, Australia

fYear

2010

fDate

18-21 April 2010

Firstpage

1

Lastpage

6

Abstract

In this paper we propose an improved multiple-input multiple-output (MIMO) polynomial cancellation coding (PCC) orthogonal frequency division multiplexing (OFDM) system. In this improved system, PCC OFDM symbols are transmitted from different antennae with different time offsets. At the receiver these symbols are demodulated using each of those time offsets. Time offsets substantially reduce the power of the interfering signal relative to the wanted signal at the PCC OFDM demodulation stage. The improved system has significantly reduced sensitivity to imperfect channel state information (CSI) and also retains the insensitivity of normal PCC OFDM to frequency offsets. Results are presented for the improved system with (2, 2) MIMO in flat Rayleigh fading channels. It shows that the improved system has a lower bit error rate (BER).

Keywords

Bit error rate; Channel estimation; Intersymbol interference; MIMO; OFDM; Polynomials; Receiving antennas; Robustness; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2010 IEEE

Conference_Location

Sydney, Australia

ISSN

1525-3511

Print_ISBN

978-1-4244-6396-1

Type

conf

DOI

10.1109/WCNC.2010.5506418

Filename

5506418