Optimal Training Signals Design for MIMO OFDM Systems with Guard Subcarriers

Author

Li, Zi ; Cai, Yueming ; Xu, Youyun

Author_Institution

Inst. of Commun. Eng., PLAUST, Nanjing

Volume

3

fYear

2006

fDate

7-10 May 2006

Firstpage

1541

Lastpage

1544

Abstract

All existing training signals designs for OFDM systems assume no guard subcarriers. In practice, guard subcarriers exist in almost all the OFDM systems. In this paper, we propose a linear programming (LP) method for optimal power distribution design and a certain matrix for optimal phase design in MIMO OFDM systems with guard subcarriers. Based on these methods, the optimal training signals for 802.11a and 802.16 are derived. Simulation results show that a significant performance improvement can be achieved with the proposed training signals

Keywords

MIMO systems; OFDM modulation; WiMax; linear programming; wireless LAN; 802.11a; 802.16; MIMO OFDM systems; guard subcarriers; linear programming method; optimal phase design; optimal power distribution design; optimal training signals design; Channel estimation; Laboratories; Local area networks; MIMO; Mobile communication; OFDM; Power distribution; Receiving antennas; Signal design; Transmitting antennas; MIMO OFDM; guard subcarriers; optimal training;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd

Conference_Location

Melbourne, Vic.

ISSN

1550-2252

Print_ISBN

0-7803-9391-0

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2006.1683094

Filename

1683094