Multiuser detection for CDMA systems

摘要: Spread spectrum-based code division multiple access (CDMA), has taken on a significant role in cellular and personal communications. We concentrate direct sequence CDMA (DS/CDMA). show that there is natural modification of the present systems potentially capable capacity increases. By "natural modification" we mean can be made conceptually clear, not it easy to implement. Indeed, optimal multiuser detector much too complex most research addresses problem simplifying detection for implementation. The objective article make basic idea intuitive then how investigators are trying reduce practice. also indicate receiver structures with acceptable levels complexity address potential obstacles achieving theoretically predicted performance As result these investigations, an answer following question expected. Is suboptimal cost effective build enough advantage over day systems? A definitive yet available. >