会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 67. 发明申请
    • DATA DEMODULATION FOR A CDMA COMMUNICATION SYSTEM
    • CDMA通信系统的数据解调
    • WO2005039068A1
    • 2005-04-28
    • PCT/US2004/034500
    • 2004-10-18
    • QUALCOMM INCORPORATEDLI, TaoZHANG, Li
    • LI, TaoZHANG, Li
    • H04B1/707
    • H04B1/707H04B2201/70707H04J13/0044H04J13/12
    • An integrated circuit that performs data demodulation on partially despread symbols includes a despreading unit (620), a channel compensation unit (640), and a symbol combiner (650). The despreading unit (620) despreads input samples and provides despread symbols for a first code channel with a first spreading factor. The channel compensation unit (640) multiplies the despread symbols with channel estimates and provides demodulated symbols. The symbol combiner (650) combines groups of demodulated symbols to obtain recovered data symbols for a second code channel with a second spreading factor that is an integer multiple of the first spreading factor. The channel compensation and symbol combining are dependent on whether or not transmit diversity is used. For a TDM design, despread symbols for multiple first code channels are processed in a TDM manner, one channel at a time, to obtain recovered data symbols for multiple second code channels. The channel compensation unit and symbol combiner can be operated in a pipelined manner.
    • 对部分解扩符号执行数据解调的集成电路包括解扩单元(620),信道补偿单元(640)和符号组合器(650)。 解扩单元(620)对输入样本进行解扩,并为具有第一扩频因子的第一码信道提供解扩符号。 信道补偿单元(640)将解扩符号与信道估计相乘,并提供解调符号。 符号组合器(650)组合解调符号组,以获得具有作为第一扩展因子的整数倍的第二扩展因子的第二代码信道的恢复数据符号。 信道补偿和符号组合取决于是否使用发射分集。 对于TDM设计,针对多个第一代码信道的解扩符号以TDM方式一次处理一个信道,以获得多个第二代码信道的恢复数据符号。 信道补偿单元和符号组合器可以以流水线方式操作。