TY - JOUR
T1 - Iterative overlap FDE for multicode DS-CDMA
AU - Takeda, Kazuaki
AU - Tomeba, Hiromichi
AU - Adachi, Fumiyuki
PY - 2008
Y1 - 2008
N2 - Recently, a new frequency-domain equalization (FDE) technique, called overlap FDE, that requires no GI insertion was proposed. However, the residual inter/intra-block interference (IBI) cannot completely be removed. In addition to this, for multicode direct sequence code division multiple access (DS-CDMA), the presence of residual interchip interference (ICI) after FDE distorts orthogonality among the spreading codes. In this paper, we propose an iterative overlap FDE for multicode DS-CDMA to suppress both the residual IBI and the residual ICI. In the iterative overlap FDE, joint minimum mean square error (MMSE)-FDE and ICI cancellation is repeated a sufficient number of times. The bit error rate (BER) performance with the iterative overlap FDE is evaluated by computer simulation.
AB - Recently, a new frequency-domain equalization (FDE) technique, called overlap FDE, that requires no GI insertion was proposed. However, the residual inter/intra-block interference (IBI) cannot completely be removed. In addition to this, for multicode direct sequence code division multiple access (DS-CDMA), the presence of residual interchip interference (ICI) after FDE distorts orthogonality among the spreading codes. In this paper, we propose an iterative overlap FDE for multicode DS-CDMA to suppress both the residual IBI and the residual ICI. In the iterative overlap FDE, joint minimum mean square error (MMSE)-FDE and ICI cancellation is repeated a sufficient number of times. The bit error rate (BER) performance with the iterative overlap FDE is evaluated by computer simulation.
KW - DS-CDMA
KW - ICI cancellation
KW - Mmse frequency-domain equalization
KW - Overlap FDE
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U2 - 10.1093/ietcom/e91-b.6.1942
DO - 10.1093/ietcom/e91-b.6.1942
M3 - Article
AN - SCOPUS:67651018774
SN - 0916-8516
VL - E91-B
SP - 1942
EP - 1951
JO - IEICE Transactions on Communications
JF - IEICE Transactions on Communications
IS - 6
ER -