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    • 4. 发明申请
    • Soft Handoff Using A Multi-Beam Antenna System
    • 使用多光束天线系统进行软切换
    • US20090034475A1
    • 2009-02-05
    • US12175184
    • 2008-07-17
    • Donald L. RunyonAnthony Guy HamelTimothy J. Martin
    • Donald L. RunyonAnthony Guy HamelTimothy J. Martin
    • H04W4/00
    • H04B1/18H01Q1/42H01Q9/0407H01Q21/205H04B1/0071H04B1/40H04B7/0808H04B7/18515
    • A method for providing soft handoff between antennas in a multi-antenna system is provided according to some embodiments of the disclosure. A first packetized digital data stream may be received from a satellite using a first antenna and the data stream may include a plurality of packets that each include a header and data. The data may be provided, forwarded or stored in memory. In the meantime, a second packetized digital data stream is monitored. The second packetized digital data stream may be received from the satellite using a second antenna. The phase difference between the first packetized digital data stream and the second packetized digital data stream may be determined and added or subtracted from the second packetized digital data stream. The second packetized digital data stream may then be provided, forwarded or stored in memory.
    • 根据本公开的一些实施例,提供了一种用于在多天线系统中的天线之间提供软越区切换的方法。 可以使用第一天线从卫星接收第一分组数字数据流,并且数据流可以包括每个包括头部和数据的多个分组。 可以将数据提供,转发或存储在存储器中。 同时,监视第二分组数字数据流。 可以使用第二天线从卫星接收第二分组数字数据流。 第一分组化数字数据流和第二分组数字数据流之间的相位差可以从第二分组数字数据流确定和相加或相减。 然后可以将第二分组数字数据流提供,转发或存储在存储器中。
    • 8. 发明申请
    • SUBSET TRANSFORM INTERLEAVER
    • US20120242518A1
    • 2012-09-27
    • US13052880
    • 2011-03-21
    • Timothy J. Martin
    • Timothy J. Martin
    • H03M7/00
    • H03M13/2742H03M13/2771H03M13/2782
    • Digital communications interleavers re-order the bits of a data coding block in a way that can be described by a table of indices that map the original order to the interleaved order. Conventional interleavers include index table interleavers, which store an index table ahead of operation and algorithmic Interleavers, which generate the indices during operation.Described herein are a new class of interleavers: Subset Transform Interleavers. A subset of generator outputs is selected and processed to create the interleaver indices. The selection is determined apriori and the selection results are stored in a Subset Usage Table. During operation, the generator is operated again and the Subset Usage Table entries determine which generator outputs are used. The generator may be a pseudo-random number generator. Implementations can use an Indexes Remaining Table, which can additionally be manipulated during operation such that it returns to an initialized state after each block interleaving process.
    • 数字通信交织器以可以通过将原始顺序映射到交织顺序的索引表来描述的方式重新排序数据编码块的比特。 传统的交织器包括索引表交织器,其存储操作前的索引表和算法交织器,其在操作期间生成索引。 这里描述的是一类新的交织器:子集变换交错器。 选择并处理发生器输出的子集以创建交织器索引。 选择是先决条件,选择结果存储在子集使用表中。 在运行期间,再次运行发电机,子集使用表项确定使用哪个发生器输出。 发生器可以是伪随机数发生器。 实现可以使用索引剩余表,其可以在操作期间另外操作,使得在每个块交错处理之后返回到初始化状态。