Efficient Real-Time Correlator for LS Sequences

Author

Perez, M.C. ; Urena, J. ; Hernandez, A. ; Jimenez, A. ; Marnane, W.P. ; Alvarez, F.

Author_Institution

Univ. of Alcala, Alcala de Henares

fYear

2007

fDate

4-7 June 2007

Firstpage

1663

Lastpage

1668

Abstract

The cross-correlation function and the side-lobes of the auto-correlation function of LS codes are zero in a certain vicinity of the zero shift. Therefore, the effects of the Inter-Symbol- Interference and Multiple-Access-Interference that appears in CDMA and multi-sensor systems are mitigated. Conventionally, the detection of these sequences has been achieved by means of straight-forward matched-filter correlators. In this paper, a new correlator which significantly reduces the total number of operations to be performed is proposed, allowing real-time operation.

Keywords

code division multiple access; codes; correlation methods; sensor fusion; CDMA; auto-correlation function; cross-correlation function; inter-symbol-interference; loosely synchronized codes; loosely synchronized sequences; multiple-access-interference; multisensor systems; real-time correlator; side-lobes; Autocorrelation; Correlators; Educational institutions; Field programmable gate arrays; Hardware; Intersymbol interference; Matched filters; Multiaccess communication; Multiple access interference; Pulse compression methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2007. ISIE 2007. IEEE International Symposium on

Conference_Location

Vigo

Print_ISBN

978-1-4244-0754-5

Type

conf

DOI

10.1109/ISIE.2007.4374854

Filename

4374854