Improved adaptive code acquisition scheme for practical DS/SS systems

This paper presents our proposals to overcome two problems in applying the adaptive code acquisition scheme to practical systems. At first, a system parameter setting method based on SNR estimation is proposed to obtain near-optimum performance in real environments. Secondly, we propose a novel adap...

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Bibliographic Details
Published inIEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 Vol. 5; pp. 3743 - 3747 Vol. 5
Main Authors YU, Takki, HAN, Myeongsu, HONG, Daesik, KANG, Changeon
Format Conference Proceeding
LanguageEnglish
Published Piscataway, New Jersey IEEE 2004
Subjects
Adaptive coding
Adaptive filters
Applied sciences
Cities and towns
Coding, codes
Degradation
Detectors
Exact sciences and technology
Information technology
Information, signal and communications theory
Performance gain
Performance loss
Proposals
Signal and communications theory
Telecommunications and information theory
Testing
Degradation
Performance evaluation
Simulation
Spread spectrum
Algorithm
Adaptive method
Direct sequence
Adaptive coding
Signal to noise ratio
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Summary:This paper presents our proposals to overcome two problems in applying the adaptive code acquisition scheme to practical systems. At first, a system parameter setting method based on SNR estimation is proposed to obtain near-optimum performance in real environments. Secondly, we propose a novel adaptation algorithm using a sub-filter structure, which enables the fast acquisition required in the practical systems. Simulation results show that the first proposal gives reliable acquisition performance in real situations without severe degradation, and the proposed adaptation algorithm offers 5-6 dB gain compared to the conventional adaptation algorithm for a number of taps of 64.
ISBN:0780385217
9780780385214
ISSN:1090-3038
2577-2465
DOI:10.1109/VETECF.2004.1404764