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公开(公告)号：US08111790B2
公开(公告)日：2012-02-07
申请号：US12288569
申请日：2008-10-20
CPC分类号： H04B17/345
摘要： A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can be ameliorated. For example, a value, σ2, can be used to represent the estimated noise and interference power, and σ2 can be used to modify a received signal to ameliorate the effects of noise and interference. σ2 can be adjusted in response to partial interference, and can be represented by the formula: σ2=σN2+q σI2, where σN2 is “noise power,” σI2 is “interference power,” and q is an interference correction factor.
摘要翻译： 一种技术对使用干扰估计和相关功率的解调/去映射处理中使用的噪声功率加权。 使用这种技术可以改善部分干扰的影响。 例如，可以使用值＆sgr; 2来表示估计的噪声和干扰功率，并且可以使用2来修改接收到的信号以改善噪声和干扰的影响。 ＆sgr; 2可以根据部分干扰进行调整，可以用公式表示：＆sgr; 2 =＆sgr; N2 + q＆sgr; I2，其中＆sgr; N2是“噪声功率”，＆sgr; I2是“干扰功率 ，“q是干扰校正因子。
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公开(公告)号：US08090060B2
公开(公告)日：2012-01-03
申请号：US11800357
申请日：2007-05-04
CPC分类号： H04L25/03057 , H04B7/0848 , H04B7/086 , H04L2025/03426
摘要： A technique for low-complexity high-performance coherent demodulation of GFSK signals involves utilizing a novel phase and frequency tracking mechanism coupled with a trellis search technique to track signal memory in the demodulation process. A method according to the technique may include modeling modulation based upon a trellis. The method may further include estimating unknown parameters, selecting a maximum likelihood path through the trellis, and mapping the maximum likelihood path to an output bit sequence. The technique is also applicable to DSPK and other applicable known or convenient protocols.
摘要翻译： 用于GFSK信号的低复杂度高性能相干解调的技术涉及利用与网格搜索技术相结合的新型相位和频率跟踪机制来在解调过程中跟踪信号存储器。 根据该技术的方法可以包括基于网格的建模调制。 该方法还可以包括估计未知参数，选择通过网格的最大似然路径，以及将最大似然路径映射到输出比特序列。 该技术也适用于DSPK和其他适用的已知或方便的协议。
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公开(公告)号：US20090116541A1
公开(公告)日：2009-05-07
申请号：US12288569
申请日：2008-10-20
CPC分类号： H04B17/345
摘要： A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can be ameliorated. For example, a value, σ2, can be used to represent the estimated noise and interference power, and σ2 can be used to modify a received signal to ameliorate the effects of noise and interference. σ2 can be adjusted in response to partial interference, and can be represented by the formula: σ2=σN2+q σI2, where σN2 is “noise power,” σI2 is “interference power,” and q is an interference correction factor.
摘要翻译： 一种技术对使用干扰估计和相关功率的解调/去映射处理中使用的噪声功率加权。 使用这种技术可以改善部分干扰的影响。 例如，可以使用sigma2来表示估计的噪声和干扰功率，并且可以使用sigma2来修改接收到的信号以改善噪声和干扰的影响。 sigma2可以响应于部分干扰来调整，并且可以由公式表示：sigma2 = sigmaN2 + q sigmaI2，其中sigmaN2是“噪声功率”，σI2是“干扰功率”，q是干扰校正因子。
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公开(公告)号：US08091012B2
公开(公告)日：2012-01-03
申请号：US11800378
申请日：2007-05-04
IPC分类号： H03M13/03
CPC分类号： H03M13/3944 , H03M13/19 , H03M13/618 , H03M13/6502
摘要： A device including a minimal trellis decoder is disclosed. The device can receive an encoded codeword, which the minimal trellis decoder efficiently decodes. In a specific implementation, the device can include a Bluetooth receiver that, in operation, receives an encoded codeword from a Bluetooth transmitter, which is decoded by the minimal trellis decoder.
摘要翻译： 公开了一种包括最小网格解码器的设备。 该设备可以接收经编码的码字，最小网格解码器有效地解码。 在具体实现中，设备可以包括蓝牙接收器，其在操作中从蓝牙发射器接收编码码字，由最小格状解码器解码。
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公开(公告)号：US08407551B2
公开(公告)日：2013-03-26
申请号：US12653657
申请日：2009-12-15
IPC分类号： H03M13/29
CPC分类号： H03M13/11 , H03M13/1117 , H04L1/005 , H04L1/0057 , H04L1/06
摘要： A technique for low-density parity-check (LDPC) coding involves utilizing a fixed point implementation in order to reduce or eliminate reliance on floating point operations. The fixed point implementation can be used to calculate check node extrinsic L-value as part of an LDPC decoder in an LDPC system. The technique can include one or more of linear approximations, offset approximations, and node-limiting approximation. A system constructed according to the technique implements one or more of linear approximations, offset approximations, and node-limiting approximation.
摘要翻译： 用于低密度奇偶校验（LDPC）编码的技术涉及利用固定点实现来减少或消除对浮点运算的依赖。 固定点实现可用于计算校验节点外在L值作为LDPC系统中的LDPC解码器的一部分。 该技术可以包括线性近似，偏移近似和节点限制近似中的一个或多个。 根据该技术构造的系统实现线性近似，偏移近似和节点限制近似中的一个或多个。
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公开(公告)号：US20100162075A1
公开(公告)日：2010-06-24
申请号：US12653657
申请日：2009-12-15
CPC分类号： H03M13/11 , H03M13/1117 , H04L1/005 , H04L1/0057 , H04L1/06
摘要： A technique for low-density parity-check (LDPC) coding involves utilizing a fixed point implementation in order to reduce or eliminate reliance on floating point operations. The fixed point implementation can be used to calculate check node extrinsic L-value as part of an LDPC decoder in an LDPC system. The technique can include one or more of linear approximations, offset approximations, and node-limiting approximation. A system constructed according to the technique implements one or more of linear approximations, offset approximations, and node-limiting approximation.
摘要翻译： 用于低密度奇偶校验（LDPC）编码的技术涉及利用固定点实现来减少或消除对浮点运算的依赖。 固定点实现可用于计算校验节点外在L值作为LDPC系统中的LDPC解码器的一部分。 该技术可以包括线性近似，偏移近似和节点限制近似中的一个或多个。 根据该技术构造的系统实现线性近似，偏移近似和节点限制近似中的一个或多个。
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公开(公告)号：US20070283230A1
公开(公告)日：2007-12-06
申请号：US11800378
申请日：2007-05-04
IPC分类号： H03M13/00
CPC分类号： H03M13/3944 , H03M13/19 , H03M13/618 , H03M13/6502
摘要： A technique for implementing a radio receiver to reduce complexity involves utilizing a reduced-complexity decoding technique for a shortened Hamming (15, 10) block code.
摘要翻译： 用于实现无线电接收机以减少复杂性的技术涉及利用缩减复杂度的解码技术来缩短汉明（15,10）块码。
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