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    • 98. 发明授权
    • Method and apparatus for channel quality measurements
    • 用于信道质量测量的方法和装置
    • US08170155B2
    • 2012-05-01
    • US12839836
    • 2010-07-20
    • Ming JiaJianglei MaPeiying ZhuDong-Sheng YuWen Tong
    • Ming JiaJianglei MaPeiying ZhuDong-Sheng YuWen Tong
    • H03D1/00H04L27/06
    • H04L1/0631H04L1/0003H04L1/0009H04L1/0036H04L1/208H04L5/0023H04L5/0048H04L5/0053H04L25/0226H04L25/0236H04L25/03318H04L25/067
    • A method and apparatus are provided for measuring channel quality over which has been transmitted a sequence of symbols produced by encoding and constellation mapping a source data element sequence. The method includes receiving a sequence of received symbols over the channel whose quality is to be measured. The sequence of received symbols is de-mapped based on a first channel quality indicator previously transmitted to a transmitter of the sequence of symbols. The method also includes decoding the de-mapped symbols to produce a decoded output sequence. In some embodiments, the decoding may be based on the first channel quality indicator. The method also includes re-encoding the decoded output sequence to produce a re-encoded output sequence. The method also includes correlating the de-mapped symbols with the re-encoded output sequence to produce a second channel quality indicator. The second channel quality indicator is transmitted to the transmitter to adaptively select a type of mapping based on the second channel quality indicator. In some embodiments, the transmitter may adaptively select a type of encoding based on the second channel quality indicator.
    • 提供了一种用于测量已经发送了通过对源数据元素序列进行编码和星座映射而产生的符号序列的信道质量的方法和装置。 该方法包括在其质量要被测量的信道上接收接收到的符号序列。 基于先前发送到符号序列的发射机的第一信道质量指示符来对接收符号的序列进行解映射。 该方法还包括对解映射符号进行解码以产生解码的输出序列。 在一些实施例中,解码可以基于第一信道质量指示符。 该方法还包括对解码的输出序列进行重新编码以产生重新编码的输出序列。 该方法还包括将去映射符号与重新编码的输出序列相关联以产生第二信道质量指示符。 第二信道质量指示符被发送到发射机,以基于第二信道质量指示符自适应地选择一种类型的映射。 在一些实施例中,发射机可以基于第二信道质量指示符自适应地选择一种类型的编码。