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.
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.
|Divisions:||Faculty of Physical and Applied Science > Electronics and Computer Science > Comms, Signal Processing & Control
|Date Deposited:||13 Dec 2005|
|Last Modified:||02 Mar 2012 12:40|
|Contributors:||Hua, W. (Author)
Yang, L-L. (Author)
Hanzo, L. (Author)
|Further Information:||Google Scholar|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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