A new time synchronization algorithm for multi-carrier CDMA signals

Author

Lee, Hyunkyu ; Choi, Ginkyu ; Lee, Changwoo

Author_Institution

Telecommun. R&D Center, Samsung Electron. Ltd., Kyungki-Do, South Korea

fYear

1999

fDate

1999

Firstpage

118

Lastpage

120

Abstract

This paper discusses the effects of a time synchronization error on multi-carrier CDMA signals. The time synchronization consists of FFT symbol time recovery and sampling clock recovery. In general, symbol time recovery is carried out before sampling clock adjustments. The problem for the time synchronization errors is the sample rob/stuff phenomenon due to symbol time offset. Thus a more efficient synchronization algorithm is required. This paper introduces a new time synchronization algorithm for multi-carrier CDMA signals, which consists of symbol time recovery and sampling clock adjustment using the pilot symbols. Our algorithm is performed, and validated by computer simulation under both AWGN and multipath fading channel. We demonstrate that the proposed algorithm can obtain two time synchronization errors simultaneously

Keywords

AWGN channels; OFDM modulation; code division multiple access; fading channels; fast Fourier transforms; land mobile radio; multipath channels; synchronisation; AWGN channel; FFT symbol time recovery; multi-carrier CDMA signals; multipath fading channel; pilot symbol; sample rob/stuff phenomenon; sampling clock adjustment; sampling clock recovery; symbol time offset; time synchronization algorithm; AWGN; Business communication; Clocks; Computer simulation; Fading; Frequency synchronization; Multiaccess communication; OFDM; Research and development; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on

Conference_Location

Annapolis, MD

Print_ISBN

0-7803-5599-7

Type

conf

DOI

10.1109/SPAWC.1999.783033

Filename

783033