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MCI Cancellation for Multi-Code Wideband CDMA

Chen, Jun, Wang, Jiangzhou, Sawahashi, Mamoru (2002) MCI Cancellation for Multi-Code Wideband CDMA. IEEE Journal on Selected Areas in Communications, 20 (2). pp. 450-462. ISSN 0733-8716. (doi:10.1109/49.983371) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:7322)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
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This paper proposes a mutlipath interference canceller (MPIC) associated with orthogonal code-multiplexing that achieves much higher peak throughput than 2 mb/s with adaptive data modulation for high-speed packet transmission in the wideband direct sequence-code division multiple access (W-CDMA) forward link, and evaluates its throughput performance by computer simulation. The simulation results elucidate that sufficient multipath interference (MPI) suppression is achieved by a four-stage MPIC with 6–12 orthogonal code-multiplexing using one iterative channel estimation with pilot and decision feedback data symbols and further that the interference rejection weight control according to the number of observed multipaths is effective in improving the throughput. It is also demonstrated that MPIC exhibits a superior MPI suppression effect to a chip equalizer in the lower received signal energy per bit-to-background noise spectrum density ( 0) channel around 0–3 dB owing to the successive channel estimation at each stage. We show that the maximum peak throughput using MPIC is approximately 2.1 fold that without MPIC in a two-path and three-path Rayleigh fading channel and that the peak throughput of 8.0 mb/s is achieved using 64QAM data modulation in a two-path fading channel within a 5-MHz bandwidth. Furthermore, the required average 0 for satisfying the same throughput with MPIC is decreased by more than 2.0 dB. MPIC utilizes an efficient high-level data modulation scheme and is very effective in extending the coverage in which much higher throughput can be provided under multipath fading channels for high-speed packet transmission in the W-CDMA forward link.

Item Type: Article
DOI/Identification number: 10.1109/49.983371
Uncontrolled keywords: Adaptive modulation, direct sequence-code division multiple access, interference canceller, multipath, packet transmission
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK5101 Telecommunications
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Yiqing Liang
Date Deposited: 18 Sep 2008 15:24 UTC
Last Modified: 16 Nov 2021 09:45 UTC
Resource URI: (The current URI for this page, for reference purposes)
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