A M-ary biorthogonal code SS multicarrier CDMA transmission scheme

Author

Xu, Xin ; Bai, Binfeng ; Cai, Yueming ; Qiao, Xiaoqiang ; Zhu, Rui

Author_Institution

Inst. of Commun. Eng., PLAUST, Nanjing, China

Volume

1

fYear

2003

fDate

14-17 Dec. 2003

Firstpage

667

Abstract

In this paper a M-ary biorthogonal code spread-spectrum (SS) multicarrier code division multiple access (CDMA) transmission scheme is proposed. This scheme uses quadrature BPSK modulation and biorthogonal SS code to take data; channel estimation eliminates the ambiguities of amplitude and phase generated by channel fading, and avoids the identification problem of the single/dual SS code. In comparison with conventional multicarrier CDMA system, this scheme highly increases the data rate of up to 2 log/sub 2/ M times. Meanwhile, simulations are performed with the improved subspace tracking and least squares (LS) channel estimation algorithm in the case of different combining schemes, and show good system performance.

Keywords

channel estimation; code division multiple access; fading channels; least squares approximations; quadrature phase shift keying; spread spectrum communication; M-ary biorthogonal code; channel estimation; channel fading; code division multiple access transmission scheme; least squares approximations; quadrature BPSK modulation; spread-spectrum multicarrier CDMA transmission scheme; Amplitude modulation; Binary phase shift keying; Channel estimation; Fading; Least squares approximation; Modulation coding; Multiaccess communication; Multicarrier code division multiple access; Phase modulation; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on

Conference_Location

Nanjing

Print_ISBN

0-7803-7702-8

Type

conf

DOI

10.1109/ICNNSP.2003.1279363

Filename

1279363