Interference-Free Braodband Single- and Multi-Carrier DS-CDMA

Hua, W., Yang, L-L. and Hanzo, L. (2005) Interference-Free Braodband Single- and Multi-Carrier DS-CDMA. IEEE Communications Magazine, 43, (2), 68-73.


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The choice of the direct sequence spreading code in DS-CDMA predetermines the properties of the system. This contribution demonstrates that the family of codes exhibiting an interference-free window (IFW) outperforms classic spreading codes, provided that the interfering multi-user and multipath components arrive within this IFW, which may be ensured with the aid of quasi-synchronous adaptive timing advance control. It is demonstrated that the IFW duration may be extended with the advent of multicarrier DS-CDMA proportionately to the number of subcarriers. Hence, the resultant MC DS-CDMA system is capable of exhibiting nearsingle-user performance without employing a multi-user detector. A limitation of the system is that the number of spreading codes exhibiting a certain IFW is limited, although this problem may be mitigated with the aid of novel code design principles.

Item Type: Article
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
ePrint ID: 261653
Date Deposited: 13 Dec 2005
Last Modified: 27 Mar 2014 20:04
Further Information:Google Scholar

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