Performance analysis of a dual-rate synchronous MC-CDMA system

Document Type

Conference Proceeding

Publication Date

12-1-2000

Abstract

We propose a novel dual-rate synchronous multi-carrier code division multiple access (MC-CDMA) system. In this system, all users are designed to have the same processing gain and share the same set of subcarriers. Two decorrelator-based receivers are implemented and analyzed in this paper for the dual-rate MC-CDMA system; a high-rate decorrelator (HRD) matches high data rate and a low-rate decorrelator (LRD) matches low data rate. It has been proved that for low-rate users, HRD and LRD perform similarly, while for high-rate users, LRD outperforms HRD when the signature sequences of high-rate and low-rate users are not orthogonal. Furthermore, we propose a blind multiuser detection method, which can be implemented adaptively by applying the bootstrap algorithm. It is shown that the blind adaptive detector is near-far resistant and has performance similar to that of minimum mean square error (MMSE) detector.

Identifier

0034479982 (Scopus)

Publication Title

Conference Record IEEE Global Telecommunications Conference

First Page

1380

Last Page

1384

Volume

3

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