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Proceedings Paper

Performance of filter-bank-based spreading codes for cellular and microcellular channels
Author(s): Kenneth J. Hetling; Gary J. Saulnier; Pankaj K. Das
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Paper Abstract

Recently, a new class of spreading codes has been developed based upon the time-frequency duality of multirate filter bank structures. Unlike the maximal length sequences, these new codes are not limited to being binary valued. Instead, the elements of the sequences are determined by an optimization process which emphasizes certain desirable code properties. In this paper, spreading codes based upon multirate filter banks are developed for use in a cellular or microcellular channel in which partial synchronization is maintained between the users. This situation allows the cross-correlation between the codes to be optimized over a fraction of the total range of possible phase shifts between the codes. COdes are designed for an example set of channel conditions and bit error rate results are generated. These results show that the new codes perform better than conventional Gold codes.

Paper Details

Date Published: 3 April 1997
PDF: 12 pages
Proc. SPIE 3078, Wavelet Applications IV, (3 April 1997); doi: 10.1117/12.271754
Show Author Affiliations
Kenneth J. Hetling, Rensselaer Polytechnic Institute (United States)
Gary J. Saulnier, Rensselaer Polytechnic Institute (United States)
Pankaj K. Das, Rensselaer Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 3078:
Wavelet Applications IV
Harold H. Szu, Editor(s)

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