Multiuser Detection in CDMA Systems [chapter]

<span title="2006-10-20">2006</span> <i title="John Wiley &amp; Sons, Ltd"> Wireless Communications over MIMO Channels </i> &nbsp;
Present day direct sequence code division multiple access (DS/CDMA) systems treat each user separately as a signal, with all ofthe other users representing interference or noise. Potentially significant capacity improvements can be achieved ifthe negative effect that each user has on the others is cancelled. In other words, joint detection (multiuser detection), rather than separate detection, is beneficial. Optimal multiuser detection is, however, too complex. Thus, suboptimal approaches have
more &raquo; ... een investigated. The basic principles of optimal and suboptimal multiuser detection are well understood now and effort is underway on investigating practical and economic feasibility. • A comprehensive reference set on spreadspectrum until 1985 is [SI85].
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