A modified noncoherent PN code acquisition scheme

Author

Pulikkoonattu, Rethnakaran ; Venkataraghavan, P.K. ; Ray, Tapan

Author_Institution

Core Technol. Group, UbiNetics Inc., Bangalore, India

Volume

3

fYear

2004

fDate

21-25 March 2004

Firstpage

1568

Abstract

A modified noncoherent detector for PN code acquisition of direct sequence spread spectrum signals is introduced. The proposed detector, referred as differential noncoherent (DNC) detector, is suitable for popular CDMA systems and it performs better than classical noncoherent detector. The performance improvement is shown to be 2 dB in terms of SNR while false alarm and detection probabilities are used as measurement criteria. Under a good PN code sequence assumption, an exact analysis of the DNC detector is derived. The receiver operating characteristics (ROC) results for DNC detector are then plotted against noncoherent detector results to show performance improvement. Also, a system level simulation model of the proposed detection scheme is developed using a popular system level design tool and the simulated performance results are compared against theoretical results.

Keywords

code division multiple access; differential detection; pseudonoise codes; sensitivity analysis; spread spectrum communication; CDMA systems; PN code acquisition; ROC; SNR; differential noncoherent detector; direct sequence spread spectrum signals; false alarm; receiver operating characteristics; system level design tool; system level simulation model; Band pass filters; Communication systems; Detectors; Filtering; Interference; Matched filters; Multiaccess communication; Research and development; Spread spectrum communication; System-level design;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2004. WCNC. 2004 IEEE

ISSN

1525-3511

Print_ISBN

0-7803-8344-3

Type

conf

DOI

10.1109/WCNC.2004.1311785

Filename

1311785