Code and Frequency Synchronization for DS-CDMA Systems

Name: Code and Frequency Synchronization for DS-CDMA Systems
Brand: VDM Verlag
SKU: 9783639101386
Price: 329.56 RON
Availability: InStock

Autor: Khaled Amleh

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Editura: VDM Verlag

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Joint estimation of code timing and carrier §frequency offset for (DS) direct sequence CDMA §systems...

Informații despre carte

Autor

Khaled Amleh

Limbă

engleză

Legare

Carte - Carte broșată

Publicat

2008

Pagini

148

EAN

9783639101386

ISBN

3639101383

Enbook ID

06819136

Editura

VDM Verlag

Greutate

209

Dimensiuni

152 x 229 x 8

Descriere completă

Joint estimation of code timing and carrier §frequency offset for (DS) direct sequence CDMA §systems is investigated. The goal is to provide an §algebraic solution to the joint estimation problem, §in a near-far time-varying frequency-selective §fading channel. §First, the multiuser estimation is decoupled into a §series of single-user estimation problems; then, §analytical tools of polynomial matrices are invoked §for joint carrier and code timing estimation of the §desired user. The performance of the proposed study §is examined analytically, where expressions for the §variance of propagation delay and frequency offset §estimation errors are derived.§§A subspace code-timing estimator for CDMA systems §that utilize bandlimited chip waveforms is also §presented. The proposed estimator relies on §converting the received signal to the frequency §domain, then, the code-timing estimates are obtained §by exploiting the unique structure of the spectra of §the spreading waveform. The proposed method can be §implemented both blindly and in a training-assisted§fashion.

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Code and Frequency Synchronization for DS-CDMA Systems

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