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    • 84. 发明授权
    • Data interleaver
    • 数据交织器
    • US08621322B2
    • 2013-12-31
    • US12286359
    • 2008-09-30
    • Mohit K. PrasadClark H. Jarvis
    • Mohit K. PrasadClark H. Jarvis
    • H03M13/27H03M13/53
    • H03M13/2771H03M13/271H03M13/2714H03M13/2764H03M13/2957H04L1/0066H04L1/0071
    • Methods and corresponding systems in an interleaver include loading K symbol data, in a linear order, into a matrix memory having (R·C) storage locations corresponding R rows and C columns. A sequence of interleaved addresses is produced for reading the K symbol data in an interleaved order from the matrix memory. Next, (R·C)−K interleaved addresses are queued in a first-in-first-out (FIFO) memory. After queuing (R·C)−K interleaved addresses in the FIFO memory, symbol data is output using the interleaved addresses in the FIFO memory to address and output the symbol data in the matrix memory in the interleaved order. The FIFO memory can contain at least 234 memory locations.
    • 交织器中的方法和对应系统包括将K个符号数据以线性顺序加载到具有对应于R行和C列的(R·C)存储位置的矩阵存储器中。 产生用于从矩阵存储器以交错顺序读取K个符号数据的交织地址序列。 接下来,(R·C)-K交织地址在先进先出(FIFO)存储器中排队。 在FIFO存储器中排队(R·C)-K交错地址之后,使用FIFO存储器中的交错地址输出符号数据,以交错顺序对矩阵存储器中的符号数据进行寻址和输出。 FIFO存储器可以包含至少234个存储单元。
    • 90. 发明申请
    • RANDOM-ACCESS MULTI-DIRECTIONAL CDMA2000 TURBO CODE INTERLEAVER
    • 随机访问多方向CDMA2000 TURBO代码交互
    • US20100064197A1
    • 2010-03-11
    • US12399938
    • 2009-03-07
    • Steven J. Halter
    • Steven J. Halter
    • H03M13/00
    • H03M13/2957H03M13/271H03M13/275H03M13/2764H03M13/2771H03M13/2789
    • An interleaver that implements the LCS turbo interleaver algorithm utilized by the CDMA2000 standard is described. The interleaver includes a first computation unit for receiving an input address and computing a first sequential interleaved address during a first clock cycle in response thereto. A second computation unit is included for receiving an input address and computing a second sequential interleaved address during the first clock cycle in response thereto. The interleaver further includes a comparator for determining whether the first or the second sequential interleaved address is invalid and generating a signal in response thereto. The output of the comparator provides a control signal to a switch which selects the first or the second sequential interleaved address as an output interleaved address for the first clock cycle. The interleaver is further designed to move in a forward direction or a reverse direction.
    • 描述了实现CDMA2000标准使用的LCS turbo交织器算法的交织器。 交织器包括第一计算单元,用于接收输入地址,并响应于此在第一时钟周期期间计算第一顺序交错地址。 包括第二计算单元,用于接收输入地址,并响应于此在第一时钟周期期间计算第二顺序交错地址。 交织器还包括比较器,用于确定第一或第二顺序交错地址是否无效并且响应于此产生信号。 比较器的输出向开关选择第一或第二顺序交错地址作为第一时钟周期的输出交错地址的控制信号。 交织器被进一步设计成沿正向或相反方向移动。