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2006
IEEE

Iterative Overlap FDE for DS-CDMA without GI

8 years 11 months ago
Iterative Overlap FDE for DS-CDMA without GI
—Frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can replace the conventional rake combining with significantly improved bit error rate (BER) performance for the downlink DS-CDMA in a frequency-selective fading channel. Recently, a new MMSE-FDE technique that requires no GI insertion has been proposed to avoid inter-block interference (IBI) (this technique is called overlap FDE). However, the residual IBI is produced and degrades the BER performance. Furthermore, the presence of an inter-chip interference (ICI) after MMSE-FDE limits the BER performance improvement. In this paper, we propose an iterative overlap FDE for DS-CDMA downlink to suppress both IBI and ICI. In the iterative overlap FDE, joint MMSE-FDE and ICI cancellation is repeated a sufficient number of times and the middle part of M chips is picked up. The BER performance with the iterative overlap FDE is evaluated by computer simulation. Keyword; DS-CDMA, MMSE-FDE, ICI cancellation...
Kazuaki Takeda, Hiromichi Tomeba, Fumiyuki Adachi
Added 12 Jun 2010
Updated 12 Jun 2010
Type Conference
Year 2006
Where VTC
Authors Kazuaki Takeda, Hiromichi Tomeba, Fumiyuki Adachi
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