Performance Comparison of Orthogonal and Quasi-orthogonal Codes in Quasi-Synchronous Cellular CDMA Communication

Sujit Jos; Preetam Kumar; Saswat Chakrabarti

AccessNets. Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers

Research Article

Performance Comparison of Orthogonal and Quasi-orthogonal Codes in Quasi-Synchronous Cellular CDMA Communication

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@INPROCEEDINGS{10.1007/978-3-642-04648-3_6,
    author={Sujit Jos and Preetam Kumar and Saswat Chakrabarti},
    title={Performance Comparison of Orthogonal and Quasi-orthogonal Codes in Quasi-Synchronous Cellular CDMA Communication},
    proceedings={AccessNets. Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers},
    proceedings_a={ACCESSNETS},
    year={2012},
    month={5},
    keywords={},
    doi={10.1007/978-3-642-04648-3_6}
}

Sujit Jos
Preetam Kumar
Saswat Chakrabarti
Year: 2012
Performance Comparison of Orthogonal and Quasi-orthogonal Codes in Quasi-Synchronous Cellular CDMA Communication
ACCESSNETS
Springer
DOI: 10.1007/978-3-642-04648-3_6

Sujit Jos¹^,*, Preetam Kumar²^,*, Saswat Chakrabarti²^,*

1: Dept. of Electronics and Electrical Communication Engineering
2: Indian Institute of Technology, Kharagpur

*Contact email: sujit@gssst.iitkgp.ernet.in, preetam@gssst.iitkgp.ernet.in, saswat@ece.iitkgp.ernet.in

Abstract

Orthogonal and quasi-orthogonal codes are integral part of any DS-CDMA based cellular systems. Orthogonal codes are ideal for use in perfectly synchronous scenario like downlink cellular communication. Quasi-orthogonal codes are preferred over orthogonal codes in the uplink communication where perfect synchronization cannot be achieved. In this paper, we attempt to compare orthogonal and quasi-orthogonal codes in presence of timing synchronization error. This will give insight into the synchronization demands in DS-CDMA systems employing the two classes of sequences. The synchronization error considered is smaller than chip duration. Monte-Carlo simulations have been carried out to verify the analytical and numerical results.

Published: 2012-05-11

: http://dx.doi.org/10.1007/978-3-642-04648-3_6