A high resolution overlapping delay estimation for DS-CDMA

Author

Li HanQiang ; Wei Guo ; Zheng Hui

Author_Institution

Nat. Commun. Technol. Key Lab., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

1

fYear

2004

Firstpage

273

Abstract

We consider the problem of estimating overlapped multipath delay for DS-CDMA systems. A fast high resolution overlapping delay estimation technique is proposed. To eliminate the effect on estimation error caused by the complex amplitude phase of multipath, a new correlation-based estimation function is adopted. Also, to reduce complexity without losing resolution, the method utilizes an SVD-based sinusoid retrieval algorithm. Computer simulations show that the proposed method can resolve overlapped multipaths at low signal-to-noise ratio.

Keywords

code division multiple access; computational complexity; correlation methods; delay estimation; multipath channels; signal detection; singular value decomposition; spread spectrum communication; DS-CDMA; SNR; SVD-based sinusoid retrieval algorithm; complex amplitude phase; complexity; correlation-based estimation function; estimation error; high resolution overlapping delay estimation; multipath delay estimation; signal-to-noise ratio; Amplitude estimation; Computer simulation; Delay effects; Delay estimation; Estimation error; Frequency domain analysis; Frequency estimation; Multiaccess communication; Phase estimation; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on

Conference_Location

Chengdu

Print_ISBN

0-7803-8647-7

Type

conf

DOI

10.1109/ICCCAS.2004.1346057

Filename

1346057