6533b82afe1ef96bd128b712

RESEARCH PRODUCT

Blind multi-user detection by fast fixed point algorithm without prior knowledge of symbol-level timing

T. RistaniemiJ. Joutsensalo

subject

Signal processingCode division multiple accessComputer scienceReal-time computingTelecommunications linkComputer Science::Networking and Internet ArchitectureCode (cryptography)Detection theoryCommunications systemIndependent component analysisBlind signal separationComputer Science::Information Theory

description

We consider the estimation of the source process of the desired user an the downlink of a code-division multiple access (CDMA) communication system. In downlink signal processing, only the code of the mobile telephone user is known, while the codes of the interfering users are unknown. Blind source separation or independent component analysis is an approach offering the solution to this problem. In this work we apply the fast fixed point algorithm to the separation problem. The algorithm is based on fourth-order statistics optimization. Knowledge about the symbol level timing has to be known only coarsely.

yearjournalcountryeditionlanguage
2003-01-20Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics. SPW-HOS '99
https://doi.org/10.1109/host.1999.778748