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    • 52. 发明授权
    • Method and apparatus for scaling a signal for improving performance of a receiver in a MIMO system
    • 用于缩小信号以提高MIMO系统中的接收机的性能的方法和装置
    • US07869536B2
    • 2011-01-11
    • US11753121
    • 2007-05-24
    • Yingxue LiRobert Lind Olesen
    • Yingxue LiRobert Lind Olesen
    • H04L1/02
    • H04B7/0413H04L1/20H04L25/0204H04L25/0242H04L25/0256H04L25/067H04L2025/03414H04L2025/0342H04L2025/03426
    • A multiple-input multiple-output (MIMO) receiver includes a MIMO decoder, a pre-scaling unit, a demapper, and a post-scaling unit. The MIMO decoder performs a MIMO decoding on received signals to decouple a plurality of symbols transmitted via a plurality of data streams. Both pre-demapping scaling and post-demapping scaling are performed to improve the performance of the receiver. A pre-scaling coefficient is applied to the symbols by the pre-scaling unit to generate pre-scaled symbols. The pre-scaled symbols are converted to soft bits by the demapper. The post-scaling unit then applies a post-scaling coefficient to the soft bits. The post-scaling coefficient is a signal-to-interference and noise ratio (SINR). Cross interference is taken into account in post-demapping scaling to obtain more accurate soft bits for subsequent decoding. The present invention is applicable to both a multi-carrier system, (such as orthogonal frequency division multiplexing (OFDM)), and a single carrier system.
    • 多输入多输出(MIMO)接收机包括MIMO解码器,预缩放单元,解映射器和后定标单元。 MIMO解码器对接收到的信号执行MIMO解码以去耦经由多个数据流发送的多个符号。 执行预映射缩放和后解映射缩放以提高接收机的性能。 通过预缩放单元将预缩放系数应用于符号以生成预缩放符号。 预分解符号由解映射器转换为软位。 然后,缩放后单元将比例缩放系数应用于软比特。 后缩放系数是信噪比(SINR)。 在后解映射缩放中考虑到交叉干扰,以获得更准确的软比特用于后续解码。 本发明适用于多载波系统(例如正交频分复用(OFDM))和单载波系统。
    • 58. 发明申请
    • METHOD AND APPARATUS FOR SCALING A SIGNAL FOR IMPROVING PERFORMANCE OF A RECEIVER IN A MIMO SYSTEM
    • 用于扩展用于提高MIMO系统中接收机性能的信号的方法和装置
    • US20070280387A1
    • 2007-12-06
    • US11753121
    • 2007-05-24
    • Yingxue LiRobert Lind Olesen
    • Yingxue LiRobert Lind Olesen
    • H04L1/02
    • H04B7/0413H04L1/20H04L25/0204H04L25/0242H04L25/0256H04L25/067H04L2025/03414H04L2025/0342H04L2025/03426
    • A multiple-input multiple-output (MIMO) receiver includes a MIMO decoder, a pre-scaling unit, a demapper, and a post-scaling unit. The MIMO decoder performs a MIMO decoding on received signals to decouple a plurality of symbols transmitted via a plurality of data streams. Both pre-demapping scaling and post-demapping scaling are performed to improve the performance of the receiver. A pre-scaling coefficient is applied to the symbols by the pre-scaling unit to generate pre-scaled symbols. The pre-scaled symbols are converted to soft bits by the demapper. The post-scaling unit then applies a post-scaling coefficient to the soft bits. The post-scaling coefficient is a signal-to-interference and noise ratio (SINR). Cross interference is taken into account in post-demapping scaling to obtain more accurate soft bits for subsequent decoding. The present invention is applicable to both a multi-carrier system, (such as orthogonal frequency division multiplexing (OFDM)), and a single carrier system.
    • 多输入多输出(MIMO)接收机包括MIMO解码器,预缩放单元,解映射器和后定标单元。 MIMO解码器对接收到的信号执行MIMO解码以去耦经由多个数据流发送的多个符号。 执行预映射缩放和后解映射缩放以提高接收机的性能。 通过预缩放单元将预缩放系数应用于符号以生成预缩放符号。 预分解符号由解映射器转换为软位。 然后,缩放后单元将比例缩放系数应用于软比特。 后缩放系数是信噪比(SINR)。 在后解映射缩放中考虑到交叉干扰,以获得更准确的软比特用于后续解码。 本发明适用于多载波系统(例如正交频分复用(OFDM))和单载波系统。