Invention Grant
US08644364B2 Method and system for computing a cell normalization factor by sharing arithmetic units in a rake receiver to reduce overall implementation area
有权
通过在耙式接收机中共享运算单元以减少总体实现面积来计算小区归一化因子的方法和系统
- Patent Title: Method and system for computing a cell normalization factor by sharing arithmetic units in a rake receiver to reduce overall implementation area
- Patent Title (中): 通过在耙式接收机中共享运算单元以减少总体实现面积来计算小区归一化因子的方法和系统
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Application No.: US12616239Application Date: 2009-11-11
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Publication No.: US08644364B2Publication Date: 2014-02-04
- Inventor: Thirunathan Sutharsan
- Applicant: Thirunathan Sutharsan
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H04B1/69
- IPC: H04B1/69 ; H04B1/707 ; H04B1/713

Abstract:
A mobile device receives downlink transmissions comprising replicas of an original downlink transmitted signal over corresponding fingers of a RAKE receiver comprising arithmetic units. The RAKE receiver computes a cell normalization factor for each of active cells and neighbor cells associated with the RAKE receiver. The RAKE receiver uses the same arithmetic units comprising one adder, one multiplier, one divider and/or one square root unit to compute cell normalization factors. The received downlink transmitted signal is processed using the computed cell normalization factors. The RAKE receiver determines signal power from each of other cells, separately, to compute cell normalization factors to normalize fingers of the RAKE receiver. Interference over the normalized fingers are cancelled and used to process the received downlink transmitted signal, which are combined and Turbo decoded. Phase correction is performed over interference cancelled fingers for active cells, but need not be performed for neighbor cells.
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