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    • 3. 发明申请
    • ESTIMATING BIT ERROR PROBABILITY (BEP) IN AN EDGE WIRELESS SYSTEM
    • 估计边缘无线系统中的位错误概率(BEP)
    • WO2007002417A1
    • 2007-01-04
    • PCT/US2006/024502
    • 2006-06-22
    • QUALCOMM INCORPORATEDGHOSH, Kaushik
    • GHOSH, Kaushik
    • H04L1/20H04L25/03
    • H04L1/206H04L1/0003H04L1/0009H04L1/0026H04L1/203
    • Distribution parameter mapping determines the bit error probability (BEP) of a burst transmitted from a base station to the mobile station using a modulation and coding scheme (MCS) specified in the EDGE standard. Depending on whether the multi-bit soft decisions of the burst most resemble a Gaussian or a Rician distribution, the statistical parameters µ and σ or A and σ are determined. The ratio µ/σ or A/σ is mapped to an empirically determined BEP in a Gaussian or Rician lookup table, respectively. The BEPs are not influenced by the degree of code redundancy in the MCS. The BEPs for the four bursts in a radio block are then averaged, filtered and quantized according to the EDGE standard. The quantization level of the average BEP is reported to the base station so that subsequent radio blocks can be transmitted using an MCS that is appropriate for the estimated BEP.
    • 分布参数映射使用EDGE标准中规定的调制和编码方案(MCS)来确定从基站发送到移动台的突发的比特错误概率(BEP)。 根据突发的多比特软判决是否类似于高斯或Rician分布,确定统计参数μ和s或A和s。 比率μ/ s或A / s分别映射到经验确定的高斯或Rician查找表中的BEP。 BEP不受MCS中代码冗余度的影响。 然后根据EDGE标准对无线电块中的四个突发的BEP进行平均,滤波和量化。 将平均BEP的量化级别报告给基站,使得可以使用适合于估计的BEP的MCS来发送后续无线电块。
    • 4. 发明申请
    • DETECTION OF SIGNAL MODULATION FORMAT TYPE
    • 信号调制格式检测
    • WO2006102572A1
    • 2006-09-28
    • PCT/US2006/010717
    • 2006-03-22
    • QUALCOMM IncorporatedGHOSH, KaushikO'SHEA, Helena, D.
    • GHOSH, KaushikO'SHEA, Helena, D.
    • H04L27/00H04L7/06H04L1/20
    • H04L27/0012H04L1/206
    • A biasing algorithm and apparatus for detecting the modulation format of a received signal is provided. In some aspects, the biasing method and apparatus are used in a mobile phone system implementing EDGE technology that transmits and receives both GMSK and 8PSK modulated signals. In some aspects, the biasing method and apparatus estimates the modulation format of bursts (310) of data blocks (305) of a received signal using information gathered and/or results determined during the modulation detection of one or more previous bursts of a data block to bias the modulation detection of a present burst of the same data block. In some aspects, the gathered information during the modulation detection of a previous burst comprises either the signal-to-noise ratio or the noise energy information of the previous burst.
    • 提供了一种用于检测接收信号的调制格式的偏置算法和装置。 在一些方面,偏置方法和装置用于实现EDGE技术的移动电话系统,该技术发送和接收GMSK和8PSK调制信号。 在一些方面,偏置方法和装置使用收集的信息和/或在数据块的一个或多个先前脉冲串的调制检测期间确定的结果来估计接收信号的数据块(305)的脉冲串(310)的调制格式 以偏移相同数据块的当前突发的调制检测。 在一些方面,在先前突发的调制检测期间收集的信息包括先前突发的信噪比或噪声能量信息。