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Title: A unified view of RAKE reception and its application on receiver designs for multimedia capable mobile terminals in W-CDMA
Authors: Tantikovit, S
Wang, M
Keywords: Antenna array
RAKE receiver
Issue Date: 2002
Publisher: IEICE-Inst Electronics Information Communications Eng
Source: IEICE transactions on communications, 2002, v. e85-b, no. 10, p. 1944-1956 How to cite?
Journal: IEICE Transactions on Communications 
Abstract: A unified view of RAKE reception is proposed which models a RAKE receiver as an antenna array. This unified view provides valuable insight to the signal environment under RAKE reception. Based on this view, an optimum combining scheme for RAKE receivers is proposed for the downlink of multi-code W-CDMA systems. In multi-code scenarios, the presence of inter-code interference causes severe performance degradation. The antenna array model suggests that enhancement can be achieved by increasing the receiver's degrees of freedom which is defined as the number of RAKE fingers and employs an appropriate combining scheme. The conventional maximum-ratio combining scheme is excluded since it is not capable of exploiting the increased degrees of freedom. In contrast, the proposed combining scheme provides better interference suppression when the degrees of freedom are increased. Numerical results obtained show that the proposed scheme provides very promising performance.
ISSN: 0916-8516
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