A new look at digital orthogonal transmultiplexers for cdma communications

Document Type

Article

Publication Date

12-1-1997

Abstract

Orthogonal transmultiplexers have been successfully utilized for multiuser communications. They are of the FDMA type in their most common version. The transmultiplexers using frequency selective PR-QMF's as their user codes were reported in the literature. This approach conflicts with the requirements of a CDMA communications system. We introduce novel spread spectrum PR-QMF codes in this correspondence, wherein the orthogonality is distributed over both time and frequency domains. It is shown that the proposed multivalued spread spectrum PR-QMF codes with minimized auto and cross-correlation properties outperform the conventional binary Gold codes in CDMA communication scenarios considered in the correspondence. © 1997 IEEE.

Identifier

0030783413 (Scopus)

Publication Title

IEEE Transactions on Signal Processing

External Full Text Location

https://doi.org/10.1109/78.552227

ISSN

1053587X

First Page

263

Last Page

267

Issue

1

Volume

45

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