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2007
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On Interference in Uplink SDMA SC-FDE system

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On Interference in Uplink SDMA SC-FDE system
In this paper, the issue of channel estimation with multiple In-Cell co-channel Users (ICUs) in the presence of Out of Cell Interferers (OCIs) is addressed. A Single Carrier Frequency Domain Equalization (SC-FDE), uplink Space Division Multiple Access (SDMA) system with Iterative Block Decision Feedback Equalization (IBDFE), based on the soft decisions is considered. To overcome the intra-cell interference, it is shown that if orthogonality between users during their training phase is assured, then good performance is achievable compared to non-orthogonal training. Moreover, we have shown that the way to multiplex the training either in time or frequency, does not affect the performance in time-variant channels as long as the orthogonality is maintained. It is also shown that Intercell interference could be mitigated with a combination of in-cell orthogonal pilots, spatial diversity and iterative receiver processing. Performance improvement by an IBDFE based on the soft decisions is a...
Fayyaz Siddiqui, Florence Danilo-Lemoine, David D.
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where CNSR
Authors Fayyaz Siddiqui, Florence Danilo-Lemoine, David D. Falconer
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