A modified noncoherent PN code acquisition scheme

被引:2
|
作者
Pulikkoonattu, R [1 ]
Venkataraghavan, PK [1 ]
Ray, T [1 ]
机构
[1] UbiNet Inc, Core Technol Grp, R&D, Bangalore, Karnataka, India
关键词
acquisition; CDMA; noncoherent; detection;
D O I
10.1109/WCNC.2004.1311785
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
A modified non-coherent 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 non-coherent detector. The performance improvement is shown to be 2dB 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 non-coherent 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.
引用
收藏
页码:1568 / 1571
页数:4
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