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    • 6. 发明授权
    • Receiver
    • 接收器
    • US08331499B2
    • 2012-12-11
    • US12428020
    • 2009-04-22
    • David Chappaz
    • David Chappaz
    • H04L27/01
    • H04L25/03038H04L1/0625H04L1/0643
    • A receiver for a telecommunications system in which a data signal is transmitted using a closed loop transmit diversity system and a pilot signal is transmitted using a space time transmit diversity system, the receiver comprising an equalizer for equalising a signal received by the receiver, wherein the equalizer is configured to produce an equalized signal in which effects caused by a propagation channel through which the data signal was transmitted are alleviated, the receiver further comprising a processor for processing the equalized received signal to recover the pilot signal.
    • 使用空时发射分集系统发送用于使用闭环发射分集系统和导频信号发送数据信号的电信系统的接收机,所述接收机包括用于均衡由接收机接收的信号的均衡器,其中, 均衡器被配置为产生均衡信号,其中减轻了由发送数据信号的传播信道造成的影响,接收机还包括处理器,用于处理均衡的接收信号以恢复导频信号。
    • 9. 发明申请
    • EFFICIENT OFDM PEAK REDUCTION ALGORITHM
    • 有效的OFDM峰值减少算法
    • US20110235760A1
    • 2011-09-29
    • US13052502
    • 2011-03-21
    • Chunyang YuAndrei Popescu
    • Chunyang YuAndrei Popescu
    • H04B1/10
    • H04B1/0475H04L27/2614
    • An efficient method of OFDM peak reduction is described. In an embodiment, a set of the most significant peaks in a symbol of an OFDM signal are identified and then, for each identified peak, a shifted and scaled version of a template cancellation signal is subtracted from the OFDM signal. The template cancellation signal is shifted such that its peak aligns with the identified peak and it is scaled such that it has the opposite phase to the identified peak. No iterative peak search and cancellation is involved in peak reduction, i.e. a cancellation step is not followed by another peak search for the same OFDM symbol. The process is repeated for each symbol in turn and in some embodiments the OFDM signal is up-sampled before it is analyzed to identify the most significant peaks.
    • 描述了OFDM峰值降低的有效方法。 在一个实施例中,识别OFDM信号的符号中的一组最重要的峰值,然后,对于每个识别的峰值,从OFDM信号中减去模板消除信号的偏移和缩放版本。 模板消除信号被移位,使得其峰值与识别的峰值对准,并且其被缩放使得其与所识别的峰值具有相反的相位。 在峰值降低中不涉及迭代峰值搜索和消除,即消除步骤不跟随相同OFDM符号的另一峰值搜索。 依次对每个符号重复该过程,并且在一些实施例中,OFDM信号在被分析之前被上采样以识别最高有效峰。