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    • 15. 发明申请
    • METHOD AND APPARATUS FOR PROCESSING A MODULATED SIGNAL USING AN EQUALIZER AND A RAKE RECEIVER
    • 使用均衡器和RAKE接收器处理调制信号的方法和装置
    • WO0209305A3
    • 2002-05-23
    • PCT/US0122756
    • 2001-07-17
    • QUALCOMM INC
    • SMEE JOHN EJALALI AHMAD
    • H04B1/7115H04B3/06H04B7/005H04B7/08H04L25/03H04B1/707
    • H04B7/0854H04B1/7115H04L25/03019H04L2025/03617H04L2025/03662H04L2025/03777
    • In a method for achieving higher S/N, one or more signals are received and processed to provide one or more streams of samples. In a first processing scheme, the sample stream(s) are equalized and combined within an equalizer to generate symbol estimates, which may be subsequently processed (e.g., despread and decovered) to provide a first stream of recovered symbols. The sample stream(s) may be equalized (410) prior to being combined(414). In this case, each sample stream is filtered with a set of coefficients and may be scaled with a scaling factor (412). The scaled samples for all streams are then combined to generate the symbol estimates. Alternatively, the sample stream(s) may be combined prior to being equalized. In this case, each sample stream is scaled by a scaling factor. The scaled samples for all streams are then combined to generate summed samples that are further filtered with a set of coefficients to generate the symbol estimates. The sample stream(s) may also be processed by a second processing scheme with one or more rake receivers to provide a second stream of recovered symbols. The signal quality for each processing shceme can be estimated and used to select either the first or second processing scheme.
    • 在用于实现更高S / N的方法中,接收和处理一个或多个信号以提供一个或多个采样流。 在第一处理方案中,在均衡器内均衡和组合采样流以产生符号估计,其可以随后被处理(例如,解扩和解复用)以提供第一回收符号流。 样品流可以在组合之前被相等化(410)(414)。 在这种情况下,用一组系数对每个采样流进行滤波,并可以用缩放因子进行缩放(412)。 然后将所有流的缩放样本组合以生成符号估计。 或者,样品流可以在均衡之前组合。 在这种情况下,每个采样流被缩放因子。 然后将所有流的经缩放的样本组合以产生用一组系数进一步滤波以产生符号估计的求和样本。 样本流也可以由具有一个或多个耙式接收器的第二处理方案来处理,以提供第二回收符号流。 可以估计每个处理量的信号质量并用于选择第一或第二处理方案。