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    • 4. 发明授权
    • Flexible multi-bit per symbol rate encoding
    • 灵活的多位符号速率编码
    • US06651210B1
    • 2003-11-18
    • US09747829
    • 2000-12-21
    • Mitchell D. TrottTibor Boros
    • Mitchell D. TrottTibor Boros
    • H03M1325
    • H03M13/31H03M13/09H03M13/23
    • In one embodiment, the present invention comprises a demultiplexer to divide a bit stream into a first block at a first output and a second block at a second output, a convolutional coder coupled to the first output to encode the first block and a block coder coupled to the second output to encode the second block. The invention further includes a function module coupled to the block coder to apply one of a plurality of different functions to the encoded second block to produce a third block at an output and a mapper coupled to the function module output and to the convolutional coder to map the third block from the output of the function module and the encoded first block into one of a plurality of modulation constellations. A controller is coupled to the demultiplexer to control the size of the first and second blocks, is coupled to the block coder to control the block coding, and is coupled to the function module to control the function to be applied.
    • 在一个实施例中,本发明包括多路分解器,用于将位流分解为第一输出处的第一块和第二输出处的第二块;卷积编码器,耦合到第一输出以对第一块进行编码;以及块编码器, 到第二输出以对第二块进行编码。 本发明还包括耦合到块编码器的功能模块,以将多个不同功能中的一个应用于编码的第二块,以在输出端产生第三块,并将映射器耦合到功能模块输出和卷积编码器映射 从功能模块的输出和编码的第一块的第三块转换成多个调制星座之一。 控制器耦合到解复用器以控制第一和第二块的大小,耦合到块编码器以控制块编码,并且耦合到功能模块以控制要应用的功能。
    • 7. 发明授权
    • Moderate rate phase shift keying codec
    • 中等速率相移键控编解码器
    • US06735258B1
    • 2004-05-11
    • US09675910
    • 2000-09-29
    • Mitchell D. TrottTibor Boros
    • Mitchell D. TrottTibor Boros
    • H04L2720
    • H04L1/0057H04L1/0059H04L1/0068H04L1/007H04L1/06H04L27/18
    • A method and apparatus are provided that yields bandwidth efficient low bit rate communication of digital signals in a noisy channel. According to one aspect of the present invention, the invention includes demultiplexing a received input bit stream to divide it into a first block and a second block, convolutionally coding the first block, block coding the second block, mapping the convolutionally coded first block to a sequence of three-bit symbols, so that the bits of the convolutionally coded first block make up one bit of each three-bit symbol, mapping the block coded bits of the second block to the sequence of three-bit symbols, so that the bits of the block coded second block make up two bits of the three-bit symbol, and mapping the three-bit symbols to a phase shift keyed constellation.
    • 提供一种方法和装置,其在噪声信道中产生数字信号的带宽有效的低比特率通信。 根据本发明的一个方面,本发明包括对接收到的输入比特流进行解复用以将其分成第一块和第二块,对第一块进行卷积编码,对第二块进行块编码,将卷积编码的第一块映射到 使得卷积编码的第一块的比特构成每个三比特符号的一比特,将第二块的块编码比特映射到三比特符号的序列,使得比特 的块编码的第二块构成三位符号的两位,并将三位符号映射到相移键控星座。
    • 9. 发明授权
    • Determining a spatial signature using a robust calibration signal
    • 使用鲁棒校准信号确定空间特征
    • US06668161B2
    • 2003-12-23
    • US10135979
    • 2002-04-29
    • Tibor BorosCraig H. BarrattChristopher R. UhlikMitchell D. Trott
    • Tibor BorosCraig H. BarrattChristopher R. UhlikMitchell D. Trott
    • H04B1700
    • H04L25/03343H01Q1/246H01Q3/2605H01Q3/267H04B7/005H04B7/0615H04B7/0617H04B7/0842H04B7/0848H04B17/10H04B17/11H04B17/12H04B17/14H04B17/21H04L2025/03426
    • A partial spatial signature can be determined to be used in calibration. In one embodiment, determining the partial spatial signature includes receiving a first segment of a waveform, the first segment resulting from a radio transmitting a combined signal from a first antenna element, the combined signal comprising the sum of a first signal and a second signal, and calculating a first spatial signature related measurement using the received first segment, the first signal and the second signal. The process may further include receiving a second segment of the waveform, the second segment resulting from the radio transmitting the first signal from the first antenna element, and the radio simultaneously transmitting the second signal from a second antenna element, and calculating a second spatial signature related measurement using the second received segment, the first signal, and the second signal. Then, determining the partial spatial signature may be done using the first spatial signature related measurement and the second spatial signature related measurement.
    • 可以确定部分空间签名用于校准。 在一个实施例中,确定部分空间签名包括接收波形的第一段,由无线电发送来自第一天线元件的组合信号产生的第一段,该组合信号包括第一信号和第二信号之和, 以及使用所接收的第一段,所述第一信号和所述第二信号来计算第一空间签名相关测量。 该过程还可以包括接收波形的第二段,由无线电从无线电设备发送来自第一天线单元的第一信号的第二段,无线电同时从第二天线单元发射第二信号,以及计算第二空间特征 使用第二接收段,第一信号和第二信号进行相关测量。 然后,可以使用第一空间签名相关测量和第二空间签名相关测量来确定部分空间签名。