High speed wireless turbo-coded OFCDM systems

Author

Zhou, Yiqing ; Wang, Jiangzhou

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., China

Volume

1

fYear

2005

fDate

13-16 June 2005

Firstpage

433

Abstract

Orthogonal frequency and code division multiplexing (OFCDM) systems have been introduced for high speed data transmission in future wireless mobile communications. In this paper, a hybrid multicode interference cancellation (MCI) and minimum mean square error (MMSE) detection scheme is presented for the turbo-coded OFCDM systems. Channel estimation based on a code-multiplexed pilot channel is employed. The weights of hybrid detection are derived and an effective method is proposed to estimate the weights in practical applications. By means of computer simulation, the system performance is studied to show how it is affected by parameters such as modulation schemes, the number of stages of the hybrid detection, the power ratio of pilot to data channels, spreading factor, and so on.

Keywords

OFDM modulation; channel estimation; code division multiplexing; data communication; least mean squares methods; mobile radio; turbo codes; CDM; MMSE detection scheme; OFDM; channel estimation; code division multiplexing; high speed data transmission; high speed wireless turbo-code; minimum mean square error; orthogonal frequency division multiplexing; wireless mobile communications; Channel estimation; Code division multiplexing; Data communication; Frequency; Interference cancellation; Mean square error methods; Mobile communication; OFDM; Turbo codes; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Networks, Communications and Mobile Computing, 2005 International Conference on

Print_ISBN

0-7803-9305-8

Type

conf

DOI

10.1109/WIRLES.2005.1549448

Filename

1549448