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公开(公告)号：US20070002878A1
公开(公告)日：2007-01-04
申请号：US11433997
申请日：2006-05-15
CPC分类号： H04L1/0068 , H04L1/0001 , H04L1/0041 , H04L1/0054 , H04L1/0071 , H04L1/0083
摘要： A multi-protocol wireless communication baseband transceiver includes a baseband transmit processing module and a baseband receive processing module. The baseband transmit processing module includes an encoding module, an interleaving module, a plurality of symbol mapping modules, a plurality of domain conversion modules, a plurality of cyclic prefix modules, a plurality of compensation modules, and a control module that is operably coupled to produce preamble set up information and payload set up information based on a mode of a plurality of protocol modes. The baseband receive processing module includes a plurality of receive compensation modules, a plurality of cyclic prefix removal modules, a plurality of receive domain conversion modules, an equalizing module, a plurality of demapping modules, a deinterleaving module, a decoding module, and a receive control module that is operably coupled to determine the mode from the plurality of protocol modes and the compensation control signals based on the at least one compensated stream of symbols.
摘要翻译： 多协议无线通信基带收发器包括基带发射处理模块和基带接收处理模块。 基带发送处理模块包括编码模块，交织模块，多个符号映射模块，多个域转换模块，多个循环前缀模块，多个补偿模块以及可操作地耦合到 基于多个协议模式的模式产生前导码建立信息和有效负载建立信息。 基带接收处理模块包括多个接收补偿模块，多个循环前缀去除模块，多个接收域转换模块，均衡模块，多个解映射模块，解交织模块，解码模块和接收器 控制模块，其可操作地耦合以基于所述至少一个经补偿的符号流来确定来自所述多个协议模式的模式和所述补偿控制信号。
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公开(公告)号：US20060291583A1
公开(公告)日：2006-12-28
申请号：US11166808
申请日：2005-06-24
申请人： Joachim Hammerschmidt , Bruce Edwards , Venkat Kodavati , R. Moorti , Ling Su , Jason Trachewsky , Andrew Wagner
发明人： Joachim Hammerschmidt , Bruce Edwards , Venkat Kodavati , R. Moorti , Ling Su , Jason Trachewsky , Andrew Wagner
IPC分类号： H04L27/00
摘要： A programmable transmitter generates a frame in a frame format according to one of a plurality of operating modes using a frame structure table storing a respective frame format for each of the operating modes. The transmitter includes a frame structure engine that receives a mode selection signal indicative of a select operating mode, and accesses the frame structure table to determine the frame format of the select operating mode. The frame structure engine produces a control signal to a frame generator to control the generation of a frame in the frame format of the select operating mode.
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3.发明授权Methods and systems for calibrating for gain and phase imbalance and local oscillator feed-through 失效用于校准增益和相位不平衡以及本地振荡器馈通的方法和系统公开(公告)号：US08290450B2
公开(公告)日：2012-10-16
申请号：US12939600
申请日：2010-11-04
CPC分类号： H04B17/21
摘要： Methods and systems for calibrating a transmitter with I/Q imbalance and local oscillator feed-through include generating a test tone, frequency up-converting the test tone, monitoring one or more features of the up-converted test tone, and adjusting one or more features of the transmitter in response to the monitoring. The monitoring optionally includes monitoring a beating of the envelope of the up-converted test tone. In an embodiment, a first harmonic of the up-converted test tone is monitored for local oscillator feed-through (LOFT). Alternatively, baseband data inputs to the transmitter are disabled, and LOFT is measured by measuring power at the transmitter output. A second harmonic of the up-converted test tone is monitored for gain and phase imbalances. The adjusting optionally includes adjusting a gain imbalance, adjusting a phase imbalance, and/or adjusting a DC offset. The adjusting optionally includes an iterative refinement process.
摘要翻译： 用于校准具有I / Q不平衡和本地振荡器馈通的发射机的方法和系统包括产生测试音，上变频测试音，监测升高的测试音的一个或多个特征，以及调整一个或多个 变送器的功能响应监控。 该监视可选地包括监视向上转换的测试音的包络的跳动。 在一个实施例中，监视上转换的测试音的一次谐波用于本地振荡器馈通（LOFT）。 或者，对发射机的基带数据输入被禁用，并且通过测量发射机输出端的功率来测量LOFT。 监控上变频测试音的二次谐波，以获得增益和相位不平衡。 调整可选地包括调整增益不平衡，调整相位不平衡和/或调整DC偏移。 调整可选地包括迭代细化过程。
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4.发明申请Methods and systems for calibrating for gain and phase imbalance and local oscillator feed-through 有权用于校准增益和相位不平衡以及本地振荡器馈通的方法和系统公开(公告)号：US20070025433A1
公开(公告)日：2007-02-01
申请号：US11396632
申请日：2006-04-04
IPC分类号： H04B17/00
CPC分类号： H04B17/21
摘要： Methods and systems to calibrating a transmitter for I/Q imbalance and local oscillator feed-through include generating a test tone, frequency up-converting the test tone, monitoring one or more features of the up-converted test tone, and adjusting one or more features of the transmitter in response to the monitoring. The monitoring optionally includes monitoring a beating of the envelope of the up-converted test tone. In an embodiment, a first harmonic of the up-converted test tone is monitored for local oscillator feed-through (LOFT). Alternatively, baseband data inputs to the transmitter are disabled, and LOFT is measured by measuring power at the transmitter output. A second harmonic of the up-converted test tone is monitored for gain and phase imbalances. The adjusting optionally includes adjusting a gain imbalance, adjusting a phase imbalance, and/or adjusting DC offsets. The adjusting optionally includes an iterative refinement process. Such a refinement process optionally includes performing a first monitoring, applying a set of relatively coarse settings to the one or more features in the transmitter, monitoring the beating resulting from each of the coarse settings, selecting the coarse setting corresponding the smallest beating, applying a set of relatively fine settings centered around the selected coarse setting, wherein the fine settings are more closely related to one another than are the coarse settings, monitoring the beating resulting from each of the fine settings, and selecting the fine setting corresponding the smallest beating.
摘要翻译： 用于校准发射机以用于I / Q不平衡和本地振荡器馈通的方法和系统包括产生测试音，上变频测试音，监测升高的测试音的一个或多个特征，以及调整一个或多个 变送器的功能响应监控。 该监视可选地包括监视向上转换的测试音的包络的跳动。 在一个实施例中，监视上转换的测试音的一次谐波用于本地振荡器馈通（LOFT）。 或者，对发射机的基带数据输入被禁用，并且通过测量发射机输出端的功率来测量LOFT。 监控上变频测试音的二次谐波，以获得增益和相位不平衡。 该调整可选地包括调整增益不平衡，调整相位不平衡和/或调整DC偏移。 调整可选地包括迭代细化过程。 这样的细化处理可选地包括执行第一监视，将一组相对粗略的设置应用于发射机中的一个或多个特征，监视由每个粗略设置产生的跳动，选择对应于最小跳动的粗略设置，应用 以选择的粗略设置为中心的相对精细设置的集合，其中精细设置比粗略设置彼此更紧密地相关，监视由每个精细设置产生的打击，并且选择对应于最小跳动的精细设置。
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公开(公告)号：US20070025474A1
公开(公告)日：2007-02-01
申请号：US11434379
申请日：2006-05-15
IPC分类号： H04L27/22
CPC分类号： H04L27/3863 , H03J2200/08 , H04B1/12
摘要： A calibration device for use in a radio receiver enables receiver self-calibration and self-correction of inbound RF signals. The calibration device includes an estimation module for receiving a sample digital packet and calculating imbalance parameters as a function of a portion of the sample digital packet. The calibration device further includes a correction module for applying the imbalance parameters to a received digital packet of an inbound RF signal to produce a corrected digital packet. The received digital packet may be a portion of the sample digital packet, the complete sample digital packet or a new packet.
摘要翻译： 用于无线电接收机的校准装置可实现接收机自校准和入站射频信号的自校正。 校准装置包括估计模块，用于接收样本数字分组并根据样本数字分组的一部分来计算不平衡参数。 校准装置还包括校正模块，用于将不平衡参数应用于接收到的入站RF信号的数字分组以产生校正的数字分组。 接收的数字分组可以是样本数字分组的一部分，完整的样本数字分组或新分组。
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公开(公告)号：US20070110178A1
公开(公告)日：2007-05-17
申请号：US11595618
申请日：2006-11-11
申请人： Ling Su , Joachim Hammerschmidt
发明人： Ling Su , Joachim Hammerschmidt
IPC分类号： H04K1/10
CPC分类号： H04K1/00 , H03M13/2707 , H03M13/31 , H03M13/41 , H03M13/6508 , H04L1/0002 , H04L1/0052 , H04L1/0071 , H04L1/04 , H04L1/06 , H04L27/2647
摘要： An integrated circuit radio transceiver and method therefor is operable to flexibly and efficiently de-interleave a received communication signal by initially changing a received signal from the time domain to the frequency domain to generate a plurality of tones that are then rearranged in a first de-interleaving step to an order expected by a downstream decoder. Thereafter, the tones are detected to generate a soft bit sequence and are then reverse-swizzled and de-interleaved. The de-interleaving step is performed in a manner that compensates for row/column offset interleaving performed by a transmitter that transmitted the received signal being processed.
摘要翻译： 集成电路无线电收发器及其方法可操作以通过初始地将接收到的信号从时域改变到频域来产生多个音调，从而灵活地和有效地对接收到的通信信号进行解交织， 交织步骤到下游解码器预期的顺序。 此后，检测音调以产生软比特序列，然后反向旋转并解交织。 解交织步骤以补偿由正在处理的发送接收信号的发送机执行的行/列偏移交织的方式来执行。
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公开(公告)号：US20070110180A1
公开(公告)日：2007-05-17
申请号：US11595646
申请日：2006-11-11
申请人： Joachim Hammerschmidt , Ling Su
发明人： Joachim Hammerschmidt , Ling Su
IPC分类号： H04L1/02
CPC分类号： H04L1/0041 , H04L1/0003 , H04L1/0009 , H04L1/0071 , H04L1/04 , H04L1/06
摘要： An integrated circuit radio transceiver and method therefor is operable to flexibly and efficiently interleave a digital bit stream arranged in a table characterized by N rows and N columns further including interleaving column and row bits in the table and frequency rotating interleaved bits in one interleaving step by extracting bits beginning at a row and column offset value specified for the table wherein the first extracted bit is not the first stored bit in the table. Subsequently, the transceiver and method are operable to swizzle interleaved and frequency rotated data bits extracted from the table. In one embodiment, the swizzling begins at a selectable and specified phase value. Further, a stream parser is configurable to produce any number of output streams based upon any number of input streams.
摘要翻译： 集成电路无线电收发机及其方法可操作以灵活和有效地交织布置在表格中的数字比特流，其特征在于N行和N列，其中进一步包括表中的交织列和行比特，并且在一个交织步骤中频率旋转交织比特 提取从为表指定的行和列偏移值开始的位，其中第一提取位不是表中的第一个存储位。 随后，收发器和方法可用于对从表中提取的交错和频率旋转数据比特进行转换。 在一个实施例中，旋转开始于可选择和指定的相位值。 此外，流解析器可配置为基于任何数量的输入流产生任何数量的输出流。
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公开(公告)号：US20070036245A1
公开(公告)日：2007-02-15
申请号：US11498833
申请日：2006-08-04
IPC分类号： H04L27/06
CPC分类号： H04L25/067 , H04B1/406
摘要： Methods and systems for reconfigurable soft-output bit demapping, reconfigurable for different modes of operation (i.e., different transmitter/receiver configurations) and for different modulation schemes are provided. In an embodiment, a reconfigurable soft-output bit demapping system includes a mode/modulation independent equalizer, a plurality of mode/modulation independent soft-slicers coupled to the outputs of the equalizer, a plurality of mode/modulation independent post-scalers coupled to the outputs of the soft-slicers, and a mode-dependent coefficient calculator. The coefficient calculator generates parameters for configuring the equalizer, the soft-slicers, and the post-scalers according to the used mode of operation and modulation scheme.
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9.发明申请Method and apparatus for selecting a transmission mode based upon packet size in a multiple antenna communication system 审中-公开一种用于在多天线通信系统中基于分组大小选择传输模式的方法和装置公开(公告)号：US20050288062A1
公开(公告)日：2005-12-29
申请号：US10875157
申请日：2004-06-23
申请人： Joachim Hammerschmidt , John Veschi
发明人： Joachim Hammerschmidt , John Veschi
CPC分类号： H04L1/0002 , H04L1/0016 , H04L1/0025 , H04L1/1607 , H04L27/2602
摘要： A method and apparatus are provided for selecting a transmission mode based upon a length of at least a portion of a packet to be transmitted. A packet is transmitted in a multiple antenna communication system by selecting a transmission mode based on a length of at least a portion of the packet. The transmission mode can indicate a number of antennas or date rate (or both) to be used for the transmission. A transmission mode can also be selected based on, for example, (i) a mode selection table that records an expected transmission time for a packet for each supported transmission mode or (ii) one or more packet length thresholds each having a corresponding transmission mode. ACK (acknowledgment) packets can be transmitted using a predefined transmission mode, such as a SISO mode (or a lower order MIMO mode than the original packet), or based on a predefined relationship between the transmission mode of the original packet and the corresponding transmission mode that should be used to acknowledge the packet.
摘要翻译： 提供了一种方法和装置，用于基于要发送的分组的至少一部分的长度来选择传输模式。 通过基于分组的至少一部分的长度选择传输模式，在多天线通信系统中发送分组。 传输模式可以指示要用于传输的天线数量或日期速率（或两者）。 还可以基于例如（i）模式选择表来选择传输模式，该模式选择表记录用于每个支持的传输模式的分组的预期传输时间，或者（ii）一个或多个分组长度阈值，每个具有相应的传输模式 。 可以使用诸如SISO模式（或比原始分组更低阶MIMO模式）的预定义传输模式或者基于原始分组的传输模式与相应传输之间的预定关系来发送ACK（确认）分组 应该用于确认数据包的模式。
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公开(公告)号：US20100246656A1
公开(公告)日：2010-09-30
申请号：US12659485
申请日：2010-03-10
IPC分类号： H04L27/01
CPC分类号： H04B1/406 , H04L25/03127 , H04L25/067
摘要： Methods and systems for reconfigurable soft-output bit demapping, reconfigurable for different modes of operation (i.e., different transmitter/receiver configurations) and for different modulation schemes are provided. In an embodiment, a reconfigurable soft-output bit demapping system includes a mode/modulation independent equalizer, a plurality of mode/modulation independent soft-slicers coupled to the outputs of the equalizer, a plurality of mode/modulation independent post-scalers coupled to the outputs of the soft-slicers, and a mode-dependent coefficient calculator. The coefficient calculator generates parameters for configuring the equalizer, the soft-slicers, and the post-scalers according to the used mode of operation and modulation scheme.
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